BMW Differential and Gearing Upgrades for BMW 3 Series E90 (2006-2011)

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Upgrading various parts of the differential can have tremendous benefits in your car's performance. It's easy to forget that the differential is a source for making your car faster and handle better so it's often overlooked. The engine is not the only place to make the car faster. Our differential options vary from gearing upgrades to limited slip conversions. You can purchase the ring & pinion gear sets on their own (professional installation required) or have us build a diff around your own specifcations. The options are almost endless! Every custom-built diff is fully rebuilt with seals and bearings. We also design and supply bushing options to reduce driveline wind-up, finned differential covers for better cooling, and more!

Ratio Changes - Changing the differential gearing is one of the best and most-effective upgrades you can make on any BMW (old or new). By using a shorter (numerically higher) final drive ratio you are increasing your RPM relative to road speed - this puts you in a more powerful RPM range than before! Since you're in a 'meatier' part of the power band you're now putting down more power/torque to the ground. If you can trade outright top speed for faster acceleration at daily speeds then this is the perfect upgrade for you.

Limited Slip Upgrades - Sadly, many BMWs today are not equipped with a limited slip (posi-traction) differential. BMW has tried to compensate by using traction control that cuts power at the engine or applies the brakes to retard wheel spin (or a combination of both). But nothing beats the function and feel of a a true LSD which may be why BMW continues to use them in M cars. Our LSD upgrades can be done a number of different ways - a factory-type limited slip unit with either 2 or 3 clutch packs, helical type, OS Giken unit, or something truly custom. We can also vary ramp angles and setup to change the limited-slip behavior under acceleration, deceleration, and cornering. Need a custom diff? Call or e-mail to have a quote.

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Genuine BMW - Corporate Logo
T#:172491
Part#: 83300495143
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$ 82.99 USD
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This Axle Seal Driver is used to install 76x50x10 axle seals on TYP210 and TYP215 differentials, ensuring the seals are fully seated.
Turner Motorsport - Corporate Logo
T#:593924
Part#: 027030TMS01
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When both extreme-duty protection and saving every gram matters: the Turner Magnetic Differential Drain Plug.
ECS - Corporate Logo
T#:366828
Part#: 009314ECS01A
In Stock
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You use a magnetic drain plug for your engine oil, right? Why not apply the same proactive thinking to the differential too? This is a direct replacement magnetic differential drain plug for your BMW. It will catch and retain fine and larger metal particles in your diff oil. If you're proactive in your diff oil servicing, you will catch a minor issue long before it becomes a headache. Diff drain plug includes one sealing o-ring. Direct replacement for Genuine BMW part number(s): 33117525064, 33110308370, 33110152626
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ECS - Corporate Logo
T#:596679
Part#: 026711ECS09
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$ 169.09 USD
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Upgrade your worn rubber bushings with ECS Tuning's Performance Polyurethane Differential Bushing Set. In-House Engineered to improve power delivery and handling, with a superior service life over the soft factory rubber bushings.
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ECS - Corporate Logo
T#:589555
Part#: 026709ECS09
In Stock
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$ 156.39 USD
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Upgrade your worn OE rubber bushings with ECS Tuning's Performance Polyurethane Differential Bushing Set. In-House Engineered to improve power delivery and handling, with a superior service life over the soft factory rubber bushings.
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Open Differential Weld Plates - E8x E9x
For vehicles with automatic transmissions only - medium case differentials
ECS - Corporate Logo
T#:35121162
Part#: 056350LA01
Ships on Oct 5, 2026
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Convert your open differential to a locked differential without the costly expense of an LSD replacement.

Get your car ready for aggressive track driving or drifting without purchasing or replacing your differential. The weld-in plates strengthen your diff and allow both wheels to engage simultaneously giving you a more predictable and capable track car.

An open differential allows the wheels to spin at different speeds and sends power to the wheel with the least amount of traction. This may be a good feature for your regular everyday driver but limits you on the track. The weld-in plates simulate a driving experience similar to a limited-slip differential allowing you to put power to both wheels in a low traction area or initiate drifts.

Features and benefits:

Added strength to your differential gears
Converts from open differential
Fabricated to fit in the spider gears for an easier weld and increased confidence
Made from 7 gauge mild steel, formed to fit

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Turner Motorsport - Corporate Logo
T#:2955
Part#: TDR9080321
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$ 233.99 USD
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An aggressive mount design for increased cornering feel, and improved suspension performance.
Turner Motorsport - Corporate Logo
T#:1997
Part#: TDR9080BD2
In Stock
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Made in the USA TMS E90/E92/E82 (NON M) solid differential mounts are designed around current Grand Am Cup regulations, derived from, and currently used in TMS racecars. Thick Delrin casings are used as the non-metallic solid bushing. Replacing your differentials rubber mounts with this kit will result in a snappier feel when cornering and better suspension performance. You save money by never having to replace the stock rubber mounts that fail due to old age and fatigue. These bushings are CNC machined in the USA and made with high-grade materials.

These solid differential bushings/mounts fit the following BMWs:
2008-2012 E82 BMW 128i 135i
2014+ F22 BMW 228i 228iX M235i M235iX
2006-2011 E90 BMW 325i 325xi 328i 328xi 328i xDrive 330i 330xi 335d 335i 335xi 335i xDrive - Sedan
2006-2012 E91 BMW 325xi 328i 328xi 328i xDrive - Wagon
2007-2013 E92 BMW 328i 328xi 328i xDrive 335i 335is 335xi 335i xDrive - Coupe
2007-2013 E93 BMW 328i 335i - Convertible
2012+ F30 BMW 320i 320iX 328i 328iX 335i 335iX - Sedan
2012+ F31 BMW 328i 328iX - Wagon
2014+ F34 BMW 328i 328iX 335iX - Gran Turismo
2014+ F32 BMW 428i 428iX 435i 435iX - Coupe
2014+ F33 BMW 428i 428iX 435i 435iX - Convertible
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Bremmen Parts - Corporate Logo
T#:19362530
Part#: 4835K45
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Extreme-Pressure Steel Plug With Hex Drive - Fluoroelastomer Rubber Gasket, 9/16"-18 UN/UNF Thread

Genuine BMW - Corporate Logo
T#:7923
Part#: 33117525064
In Stock
14% off MSRP $ 11.61

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 9.99 USD
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14% off MSRP
$ 11.61

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$ 9.99 USD
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This is the front or rear Genuine BMW differential fluid drain plug for many BMWs. This can also be the transfer case plug or automatic transmission plug on some BMWs.

+ Year & Model Applications
(click to expand)
This item fits the following BMWs:
1970-1976 2002 BMW 1600 2002 2002tii
2008+ E82 BMW 128i 135i 1M Coupe
1977-1983 E21 BMW 320i 323i
1984-1991 E30 BMW 318i 318is 318ic 325e 325es 325i 325ic 325is 325ix M3
1992-1998 E36 BMW 318i 318is 318ti 318ic 323is 323ic 325i 325is 325ic 328i 328is 328ic M3
1999-2005 E46 BMW 323i 323ci 325i 325ci 325xi 328i 328ci 330i 330ci 330xi M3
2006-2011 E90 BMW 325i 325xi 328i 328xi 328i xDrive 330i 330xi 335d 335i 335xi 335i xDrive M3 - Sedan
2006-2012 E91 BMW 325xi 328i 328xi 328i xDrive - Wagon
2007-2012 E92 BMW 328i 328xi 328i xDrive 335i 335is 335xi 335i xDrive M3 - Coupe
2007-2012 E93 BMW 328i 335i M3 - Convertible
1976-1981 E12 BMW 528i 530i
1982-1988 E28 BMW 524td 528e 533i 535i 535is M5
1989-1995 E34 BMW 525i 530i 535i 540i M5
1997-2003 E39 BMW 525i 528i 530i 540i M5
2004-2010 E60 BMW 525i 525xi 530i 530xi 528i 528xi 528i xDrive 535i 535xi 535i xDrive 545i 550i M5
2010+ F07 BMW 535i GT, 535i xDrive GT, 550i GT, 550i xDrive GT
2011+ F10 BMW 528i 528i xDrive 535i 535i xDrive 550i 550i xDrive M5
1982-1989 E24 BMW 633csi 635csi M6
2004-2010 E63 BMW 645ci 650i M6
2012+ F12 BMW 640i 650i
1981-1987 E23 BMW 733i 735i
1988-1994 E32 BMW 735i 735il 740i 740il 750il
1995-2001 E38 BMW 740i 740il 750il
2002-2008 E65 BMW 745i 745li 750i 750li 760i 760li
2009+ F01 BMW 740i 740li 750i 750li 750i xDrive 750li xDrive 760li
1990-1999 E31 BMW 840i 840ci 850i 850ci 850csi
2004-2010 E83 BMW X3 2.5i X3 3.0i X3 3.0si
2011+ F25 BMW X3 xDrive28i X3 xDrive35i
2000-2006 E53 BMW X5 3.0i X5 4.4i X5 4.6is X5 4.8is
2007-2013 E70 BMW X5 3.0si X5 4.8i X5 xDrive30i X5 xDrive35d X5 xDrive35i X5 xDrive48i X5M
2008+ E71 BMW X6 xDrive35i X6 xDrive50i X6M
1997-2002 Z3 BMW Z3 1.9 Z3 2.3 Z3 2.5i Z3 2.8 Z3 3.0i M Roadster M Coupe
2003-2008 E85 BMW Z4 2.5i Z4 3.0i Z4 3.0si Z4 M Roadster M Coupe
2009+ Z4 BMW Z4 sDrive30i Z4 sDrive35i Z4 sDrive35is
2000-2003 E52 BMW Z8 Roadster

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Rein - Corporate Logo
T#:38890943
Part#: HWU0065
In Stock
$ 23.99 USD
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As components in the differential begin to wear, metal particles become loose in the diff fluid, which can lead to excess wear. This magnetic plug pulls these particles out of suspension, helping to reduce wear over time. Replaces BMW # 33117525064
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Genuine BMW - Corporate Logo
T#:7561
Part#: 22316760944
In Stock
$ 2.99 USD
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Genuine BMW Hex Nut With Plate - M8
This item fits the following BMW Chassis:
E30 M3,E36 M3,E34 M5,E39 M5,E60 M5,E63 M6,E46 M3,E82 1M Coupe,E85 Z4M,E30,E34,E36,E38,E39,E46,E63,E65,E82,E85 Z4,E86 Z4,E89 Z4,E90,E92,E93,F22,F30,F31,F32,F33,F34,F36,F80 M3,F82 M4,F83

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Genuine BMW - Corporate Logo
T#:28828
Part#: 07129904862
In Stock
$ 3.99 USD
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Genuine BMW Hex Nut With Plate
This item fits the following BMW Chassis:
E39 M5,E60 M5,E63 M6,E46 M3,E70 X5M,E71 X6M,E85 Z4M,E53 48IS,E30,E36,E38,E39,E46,E53 X5 X5,E63,E65,E70 X5,E71 X6,E85 Z4,E86 Z4,E89 Z4,E90,E92,E93,F01,F02,F06,F10,F12,F13,F15,F16

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Genuine BMW - Corporate Logo
T#:360862
Part#: 33107510289
In Stock
9% off MSRP $ 38.69

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 35.13 USD
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9% off MSRP
$ 38.69

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 35.13 USD
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Is your rear differential leaking from the axle seal ? Here is the sealing gasket for the output axle flange, includes locking snap ring.
Genuine BMW - Corporate Logo
T#:360861
Part#: 33107505604
In Stock
9% off MSRP $ 18.20

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 16.50 USD
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9% off MSRP
$ 18.20

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 16.50 USD
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**Will only fit E92's after a production date of 9/2007 Two seals are required per vehicle. Maintaining a proper amount of fluid in the rear differential is vital to the performance and longevity of the differential. If a leaking shaft seal is left untouched, the results could be catastrophic.
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Genuine BMW - Corporate Logo
T#:25199
Part#: 33111214144
In Stock
$ 8.99 USD
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Genuine BMW O-Ring - D=90Mm/3Mm
This item fits the following BMW Chassis:
E30 M3,E36 M3,E34 M5,E60 M5,E63 M6,E46 M3,E82 1M Coupe,E85 Z4M,E30,E34,E36,E38,E46,E63,E82,E85 Z4,E86 Z4,E90,E92,E93,F06,F10,F12,F13,F80 M3,F82 M4,F83

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Powerflex - Corporate Logo
T#:376418
Part#: PFR5-1226
In Stock
$ 52.99 USD
Free Shipping on orders $49 and up

Differential bushings are responsible for keeping the differential in solid alignment while dampening drivetrain vibration. While OE rubber bushings are fine when they are new from the factory, aged and worn out rubber bushings create a multitude of issues that can range from annoying to dangerous. As a factory bushing ages, it begins to harden and become brittle. When this happens the bushing will actually shrink and allow for movement at the differential mounting point. At this point, the differential is free to shift under load causing a noticeable clunking noise under acceleration and deceleration and massively increasing the stress on the driveshaft and axles. Manual transmissions suffer the worst from this as it can make shifting difficult since the differential will shift when the clutch is engaged and disengaged.

By replacing these bushings with full polyurethane, the movement is eliminated since the mounting point is supported by a much stiffer material that will not harden or shrink over time. This means less stress on the driveshaft and axles and greater longevity of supporting components. 

Powerflex street bushings are ideal for street driven vehicles and those that see occasional autocross or track time. Need bushings for a dedicated track car? Powerflex Black Series bushings are the ultimate in track and race bushings. Featuring 95A durometer polyurethane, Black Series bushings are 25% stiffer than street bushings. Engineered to perform, Powerflex performance polyurethane control arm bushings offer a supreme level of control, while still providing enough comfort for the street, with advanced polyurethane that reduces NVH that often accompanies lesser bushings. Expect improved steering feel, turn in, more responsive handling and overall improved chassis composure with Powerflex performance polyurethane control arm bushings.

Poweflex is a leading manufacturer of aftermarket suspension bushings. Using state of the art design and manufacturing, all replacement bushings are engineered to out-perform and out-last the ones that came in the car. Each line of bushings is meticulously tested and then re-tested to ensure perfect fitment and enduring quality through the life of the vehicle. A full lifetime warranty backs every one of their products and demonstrates the level of confidence and commitment Powerflex has to their customers. 

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Corteco Output Shaft Seal
For pre LCI models 335i, 335is and 335xi, from production date 07/2009
Corteco - Corporate Logo
T#:583459
Part#: 33107505604
In Stock
$ 14.42

This product was last offered at the strikethrough price on
07-06-2026

$ 11.99 USD
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$ 11.99 USD
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Seals the axles into the differential

Whiteline - Corporate Logo
T#:26938502
Part#: KDT919
Ships in 3 Business Days
$ 96.99 USD
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After thorough development and material testing aimed at achieving strength, durability, geometry retention, and memory without compromising comfort, WHITELINE has introduced a progressive, long-chain Synthetic Elastomer. This groundbreaking material combines the advantages of solid bushings with the flexibility characteristics of rubber, striking an optimal balance between performance and comfort.
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Metal Plate Limited-Slip Differential - 1.5/2.0 Way, V2
For vehicles with an automatic transmission and production year from Sept 2007+ For vehicles with a manual transmission
Team MFactory - Corporate Logo
T#:379410
Part#: MF-TRS-10E90B
Back Ordered
$ 999.99 USD
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$ 999.99 USD
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The best way to gain a prominent advantage over the competition is to do it with the MFactory Metal Plate Limited Slip Differential. The smooth consistent distribution of power to the wheels with the MFactory Plate LSD puts the power-to-the-ground and maximises your vehicle's traction. This 2-way differential will provide torque transfer during both acceleration and deceleration. This means that regardless of whether there is load (throttle) being applied to the differential or not, it will lock up during slippage. Ideal for those with track use in mind. What exactly does an LSD do you ask? Well without an LSD your car is actually 1 wheel drive, in that it can't supply torque to both wheels at the same time and will only supply torque to the wheel with less grip, which is what the shortfall is to an open differential (what most vehicles have). An LSD only lets the wheels spin at different speeds by a limited amount (typically this is a percentage difference) which is when the differential locks and both wheels get power. This is not how locked differentials work such as in off road trucks which supply equal torque and rotational speed to both rear wheels at the same time, which can cause issues with handling. Features: Forged and Cryo-Tempered for unsurpassed toughness Advanced Shot Peening technology for increased surface hardness Coil Spring preload system ensures minimal power loss and maximum response Lower initial pressure ensures maximum durability and chatter-free operation Fully rebuildable with adjustable lock (80-100%) and option for different cam types Available in 1.0, 1.5, and 2.0 way options
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Powerflex - Corporate Logo
T#:376493
Part#: PFR5-426
In Stock
$ 54.99 USD
Free Shipping on orders $49 and up

Differential bushings are responsible for keeping the differential in solid alignment while dampening drivetrain vibration. While OE rubber bushings are fine when they are new from the factory, aged and worn out rubber bushings create a multitude of issues that can range from annoying to dangerous. As a factory bushing ages, it begins to harden and become brittle. When this happens the bushing will actually shrink and allow for movement at the differential mounting point. At this point, the differential is free to shift under load causing a noticeable clunking noise under acceleration and deceleration and massively increasing the stress on the driveshaft and axles. Manual transmissions suffer the worst from this as it can make shifting difficult since the differential will shift when the clutch is engaged and disengaged.

By replacing these bushings with full polyurethane, the movement is eliminated since the mounting point is supported by a much stiffer material that will not harden or shrink over time. This means less stress on the driveshaft and axles and greater longevity of supporting components. 

Powerflex street bushings are ideal for street driven vehicles and those that see occasional autocross or track time. Need bushings for a dedicated track car? Powerflex Black Series bushings are the ultimate in track and race bushings. Featuring 95A durometer polyurethane, Black Series bushings are 25% stiffer than street bushings. Engineered to perform, Powerflex performance polyurethane control arm bushings offer a supreme level of control, while still providing enough comfort for the street, with advanced polyurethane that reduces NVH that often accompanies lesser bushings. Expect improved steering feel, turn in, more responsive handling and overall improved chassis composure with Powerflex performance polyurethane control arm bushings.

Poweflex is a leading manufacturer of aftermarket suspension bushings. Using state of the art design and manufacturing, all replacement bushings are engineered to out-perform and out-last the ones that came in the car. Each line of bushings is meticulously tested and then re-tested to ensure perfect fitment and enduring quality through the life of the vehicle. A full lifetime warranty backs every one of their products and demonstrates the level of confidence and commitment Powerflex has to their customers. 

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Victor Reinz - Corporate Logo
T#:7917
Part#: 33107510289
Ships in 1 Business Day
$ 25.44 USD
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Leaking differential output seals? Replace yours today with this OEM replacement. This seal measures 76x50x10.
Genuine BMW - Corporate Logo
T#:362306
Part#: 31507609535
In Stock
12% off MSRP $ 18.20

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 15.95 USD
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12% off MSRP
$ 18.20

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 15.95 USD
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Genuine BMW - Corporate Logo
T#:7924
Part#: 33121213949
In Stock
5% off MSRP $ 70.61

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 66.99 USD
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5% off MSRP
$ 70.61

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 66.99 USD
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Replace your leaking differential input seal with this Genuine BMW part. Whenever service is performed on the differential it is a good idea to check / replace any seals. This seal measures 50mm X 80mm X 9mm. We also recommend you replace the securing plate # 33121205138 at the same time.

This item fits the following BMWs:
2011 E82 BMW 1M Coupe
2001-2006 E46 BMW M3
2008-2011 E90 BMW M3 - Sedan
2008-2013 E92 BMW M3 - Coupe
2008-2013 E93 BMW M3 - Convertible
1988 E28 BMW M5
1991-1995 E34 BMW 540i M5
1999-2003 E39 BMW M5
2006-2010 E60 BMW i M5
2011+ F10 BMW M5
1987-1989 E24 BMW M6
2006-2010 E63 BMW M6
2012+ F12 BMW M6
2013+ F06 BMW M6 Gran Coupe
1988-1994 E32 BMW 740i 740il 750il
1990-1999 E31 BMW 840i 840ci 850i 850ci 850csi
2006-2008 E85 BMW Z4 M Roadster M Coupe
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Rear Differential Carrier Bushing - Front Position - E82,E90,E92,E93 ...
This is an M specification bushing and is an upgrade for your vehicle
Genuine BMW - Corporate Logo
T#:13479
Part#: 33312284019
Ships in 1 day
25% off MSRP $ 100.20

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 74.99 USD
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25% off MSRP
$ 100.20

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 74.99 USD
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BMW M replacement bushing. Great stock replacement for M vehicles or as an upgraded to the non-M bushings.
URO Differential Output Shaft Seal W/ Lock Ring - BMW E36 E46 E53 E60...
For pre LCI models 335i, 335is and 335xi, from production date 07/2009
URO - Corporate Logo
T#:43750219
Part#: 33107505604
In Stock
$ 10.00

This product was last offered at the strikethrough price on
08-12-2026

$ 9.98 USD
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$ 9.98 USD
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Maintaining a proper amount of fluid in the rear differential is vital to the performance and longevity of the differential. If a leaking shaft seal is left untouched, the results could be catastrophic. Two seals required per vehicle.
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BMW Differential Seal - Rear Axle
For pre LCI models 335i, 335is and 335xi, from production date 07/2009
Genuine BMW - Corporate Logo
T#:31655802
Part#: 33108860346
In Stock
2% off MSRP $ 96.58

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 94.99 USD
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2% off MSRP
$ 96.58

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 94.99 USD
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Proper fluid levels in the rear differential are crucial for its performance and longevity. Ignoring a leaking shaft seal can lead to severe damage. Each vehicle requires two seals.

Wavetrac - Corporate Logo
T#:363686
Part#: 30309170WKWVT
In Stock
$ 1,245.50 USD
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$ 1,245.50 USD
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Introducing the Wavetrac® Torque Biasing Differential by Turner Motorsport, the pinnacle of innovation for your BMW. This cutting-edge technology takes your vehicle's performance to a whole new level. With its patented design, the Wavetrac® differential is a trailblazer, automatically enhancing grip when navigating low-traction conditions. Its approach is truly revolutionary, setting it apart from other torque biasing differential designs.

Quality is the hallmark, featuring high-strength 9310 steel gears enclosed in case-hardened billet or forged steel bodies. Throughout the differential, ARP® fasteners are used, ensuring superior durability and performance. What's more, the Wavetrac® differential is virtually maintenance-free, promising a lifetime of service without the need for rebuilds.

To provide added confidence, all Wavetrac® differentials are backed by a transferable limited lifetime warranty, highlighting the product's reliability and longevity.

Important Note for Bolt Kits:

For vehicles equipped with a welded ring gear, the installation process requires the removal, drilling, and installation of the welded ring gear from your stock differential. This intricate task should be entrusted to a professional machine shop. To seamlessly install the ring gear onto the new differential, you'll need Bolt Kit ES4368731. It's imperative to consult your machine shop before purchasing this item and the necessary hardware kit.

Please be aware that no technical drawings or instructions are provided, underscoring the importance of verifying compatibility and ensuring correct installation with your chosen machine shop. Refunds or replacements will not be offered in the event of incorrect ring gear installation or differential failure due to improper installation.

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Packaged by Turner - Corporate Logo
T#:42133544
Part#: 835225790TKT
In Stock
Sale - Save 2% $ 60.99

This product was last offered at the strikethrough price on
08-04-2026

$ 59.72 USD
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Sale - Save 2%
$ 60.99

This product was last offered at the strikethrough price on
08-04-2026

$ 59.72 USD
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The kit includes 2 Quarts of Red line 75w90 - 57904 and brand new Rein rear diff oil drain plug M22x1.5
Premium Differential Service Kit - E46 M3, E9X M3, E82 1 M Coupe ...
Includes BMW SAF-XJ limited slip differential fluid with FM booster
Packaged by Turner - Corporate Logo
T#:598688
Part#: E46M3DIFSERTMSKT
In Stock
Sale - Save 8% $ 301.99

This product was last offered at the strikethrough price on
05-03-2026

$ 277.83 USD
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Sale - Save 8%
$ 301.99

This product was last offered at the strikethrough price on
05-03-2026

$ 277.83 USD
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Servicing your differential is an important job and should only be completed using high quality components! To ensure our customers are getting exactly what they need, we have put together this limited-slip differential service kit that includes all new fluid from BMW, a new BMW drain plug, and one of our new Titanium Magnetic Differential Drain Plugs!
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Genuine BMW - Corporate Logo
T#:59505
Part#: 33131428097
Ships in 1 day
5% off MSRP $ 56.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 54.00 USD
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5% off MSRP
$ 56.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 54.00 USD
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Genuine BMW Dust Guard Ring, Outer - D=68,8
This item fits the following BMW Chassis:
E39,E46,E53 X5,E65,E70 X5,E82,E83 X3,E85,E86,E89 Z4,E90,E92,E93,F01,F02,F06,F10,F12,F13,F15,F16,F25 X3,F26 X4

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Genuine BMW - Corporate Logo
T#:25594
Part#: 33176760287
In Stock
13% off MSRP $ 59.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 52.99 USD
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13% off MSRP
$ 59.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 52.99 USD
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Bushings tends to wear over time and split or even break free from the internal sleeve, causing excessive movement and sloppy control feel. Genuine BMW bushings are the perfect option to restore suspension back to day 1 quality.

As a leading source of high performance BMW parts and accessories since 1993, we at Turner Motorsport are honored to be the go-to supplier for tens of thousands of enthusiasts the world over. With over two decades of parts, service, and racing experience under our belt, we provide only quality performance and replacement parts.  All of our performance parts are those we would (and do!) install and run on our own cars, as well as replacement parts that are Genuine BMW or from OEM manufacturers. We only offer parts we know you can trust to perform!


Genuine BMW Rubber Mounting Front -
This item fits the following BMW Chassis:
E82,E90,E92,E93

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Genuine BMW - Corporate Logo
T#:587067
Part#: 07512293972TKT
In Stock
$ 184.99

This product was last offered at the strikethrough price on
06-03-2026

$ 180.99 USD
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$ 180.99 USD
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Permatex - Corporate Logo
T#:361188
Part#: 29208
In Stock
$ 33.19 USD
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Creates gaskets the same way as OEM car manufacturers


Team MFactory - Corporate Logo
T#:24677080
Part#: E92-215-308KT
Ships in 3 Business Days
$ 2,649.99 USD
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$ 2,649.99 USD
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Upgrade your BMW's drivetrain with this comprehensive kit that includes a new pumpkin for a hassle-free bolt-in replacement. Plus, enjoy the added benefit of a $500 refundable core charge. For any defects or warranty claims, please directly reach out to Team M Factory.

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Genuine BMW - Corporate Logo
T#:577470
Part#: 075122939722KT
In Stock
$ 90.99 USD
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$ 90.99 USD
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Turner Motorsport Heavy Duty Billet Aluminum Differential Cover Kit -...
For vehicles equipped with a manual transmission only. For manual transmission vehicles only, or automatic transmission vehicles produced befo...
Turner Motorsport - Corporate Logo
T#:32350848
Part#: 049438LA
Ships in 1 Business Day
Sale - Save 20% $ 1,128.99

This product was last offered at the strikethrough price on
06-14-2026

Starting at $ 899.99 USD
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Sale - Save 20%
$ 1,128.99

This product was last offered at the strikethrough price on
06-14-2026

Starting at $ 899.99 USD
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Single piece 6061 construction, optimized cooling, provisions for temp sensor, and external cooler with removable air duct.

Built to last, made from a single piece of 6061 billet aluminum with a rugged and good-looking hard-coat anodizing the Turner diff cover can handle anything you throw at it. Not only is it an absolute masterpiece, but this billet diff cover checks all the boxes for features needed. Reinforced mounting ear for strength and stability. The mounting ear is unified with the one-piece billet cover and features added material for the highest durability possible. This diff cover is cool, literally, the entire construction was designed with optimized cooling in mind. External fins are strategically placed on the rear face, bottom, and between the mounting ears of the cover, serving as effective heat sinks for optimal heat dissipation. This ensures stable temperatures, promoting longevity for both the fluid and your differential. Additionally, the internal design ensures continuous oiling and lubrication of the ring gear, maintaining its stability and preventing fatigue by controlling heat more effectively. An internal baffle at the cover's corner helps maintain proper pressure and prevents cavitation.

All of the OEM features were retained along with the upgrades. The drain and fill plugs on the diff cover are upgraded to -6AN using the provided high-pressure fittings with replaceable o-rings. The drain and fill plugs can now be used for an external oil cooler allowing you to further expand the fluid capacity for optimized cooling and service intervals. To keep an eye on things from the driver seat is 1/8 NPT provision for temp sensors, this product from Turner has you covered at every turn.

Upgrading to our Turner Billet Differential cover gives you the strength you need to push your car to its limits without worrying about snapping a diff mount from clutch kicking or other shocks to the drivetrain. In addition to its enhanced strength, this differential cover includes numerous other upgrades and conveniences. These include improved cooling and lubrication for the ring gear, upgraded fill and drain plugs, and the option to expand an external oil cooler for extreme motorsport usage. Designed to complement both upgraded daily drivers and extensively modified track cars, it also offers a visually appealing design.

Key Benefits:

Reinforced mounting ear for strength and stability
16% Increased fluid capacity
External fins on the back side, bottom, and mounting ear on the casing for maximum cooling and consistent fluid temps
Removeable air duct to direct air across the cooling fins for even more temperature control
Optimized internal design to keep fluid consistently on the ring gear
Integrated breather to prevent cavitation by venting the appropriate amount of pressure being built up in the diff housing
-6AN ports to incorporate the use of a differential cooler - this increases capacity and lowers temps allowing for extended fluid change intervals
1/8 NPT fitting for the use of a temp sensor to monitor fluid temperature
Design:

Fits manual transmission Large Case 215mm differentials
Single piece 6061 Billet aluminum construction
T6 Black hard coat anodizing for superior corrosion resistance and aesthetics
Compatible with most differential coolers(-6AN) and temp sensors(1/8 NPT)
Designed to accommodate oversized rear sway bars
Retains OEM mounting features
Factory geometry bushing size for use with OEM and aftermarket poly bushings
Removeable air duct for easy access to sensors and drain/fill plug

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URO - Corporate Logo
T#:49335120
Part#: 33121213949
In Stock
New Item
$ 18.99

This product was last offered at the strikethrough price on
07-27-2026

$ 15.99 USD
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$ 18.99

This product was last offered at the strikethrough price on
07-27-2026

$ 15.99 USD
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Replaces cracked or hardened valve body seals

Team MFactory - Corporate Logo
T#:637214
Part#: MF-TRS-DBE46
Ships in 9 Business Days
$ 179.99 USD
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$ 179.99 USD
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Pair of out put shaft differential bearings
Team MFactory Helical Limited Slip Differential (LSD) - Final Ratio 3...
For vehicles with manual or automatic transmission (Gear ratio=3.15:1) For Vehicles with automatic transmission (ring gear machining or new ring&pinion requir...
Team MFactory - Corporate Logo
T#:379412
Part#: MF-TRS-05E46A
In Stock
$ 999.99 USD
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$ 999.99 USD
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The best way to gain a prominent advantage over the competition is to do it with the MFactory Helical Limited Slip Differential. The smooth consistent distribution of power to the wheels with the MFactory Helical LSD puts the power to the ground and maximizes your vehicle's traction. A must for any car be it street, strip, or track. What exactly does an LSD do you ask? well without an LSD your car is actually 1 wheel drive, in that it can't supply torque to both wheels at the same time and will only supply torque to the wheel with less grip, which is what the shortfall is to an open differential (what most vehicles have). An LSD only lets the wheels spin at different speeds by a limited amount (typically this is a percentage difference) which is when the differential locks and both wheels get power. This is not how locked differentials work such as in off road trucks which supply equal torque and rotational speed to both rear wheels at the same time, which can cause issues with handling.
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Team MFactory - Corporate Logo
T#:381007
Part#: MF-TRS-RBSE46
Ships in 4 Business Days
$ 99.99 USD
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$ 99.99 USD
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Ensure optimal performance for your BMW's differential with the Differential Ring Gear Bolt Kit from Turner Motorsport. Whether you've recently upgraded to a Limited-Slip differential or need to restore your existing one, this kit has you covered. It includes 10 high-quality bolts along with new axle seals to provide complete hardware replacement. Trust ECS Tuning to provide everything you need from start to finish for a hassle-free installation process.
  • Complete hardware replacement kit
  • Includes 10 Differential Ring Gear Bolts and new axle seals
  • Ensures optimal performance for your differential
  • Ideal for upgrading to a Limited-Slip differential or restoring your existing one
  • Hassle-free installation process
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Team MFactory - Corporate Logo
T#:381009
Part#: MF-TRS-DBE46S
Ships in 6 Business Days
$ 299.99 USD
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$ 299.99 USD
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Installing a new LSD unit or just performing maintenance on your diff? This kit includes 10 Differential Ring Gear Bolts, new axle seals, and new differential bearings to make your project a bit easier.
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Team MFactory Metal Plate Limited-Slip Differential (LSD) - 1.5 Way -...
For vehicles with an automatic or manual transmission with a Final Gear Ratio of 3.15 ... For Vehicles with automatic transmission (ring gear machining or new ring&pinion requir...
Team MFactory - Corporate Logo
T#:379408
Part#: MF-TRS-10E90A
Ships in 7 Business Days
$ 999.99 USD
Free Shipping
$ 999.99 USD
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The best way to gain a prominent advantage over the competition is to do it with the MFactory Metal Plate Limited Slip Differential. The smooth consistent distribution of power to the wheels with the MFactory Plate LSD puts the power to the ground and maximizes your vehicle's traction. This 1.5-way differential works similarly to a 2-way in that it provides torque transfer during both acceleration and deceleration. However, the advantage over a 2-way is that it requires less force to lock the differential. This means that it will allow for different wheel speeds, like when cornering. A 1.5-way differential is typically the best option for track or street use, as it keeps from having one tire skipping or dragging.
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Team MFactory - Corporate Logo
T#:1762239
Part#: MF-TRS-SKE46
Ships in 6 Business Days
$ 199.99 USD
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$ 199.99 USD
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Streamline the setup process for your Limited Slip Differential (LSD) with this mandatory back-lash setting tool. This custom-designed tool is instrumental in reducing installation time by a whopping 50%! It's important to note that this tool is not part of BMW's offerings. Should there be any defects or warranty-related matters, it's advisable to directly reach out to Team M Factory for prompt resolution.

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Rein - Corporate Logo
T#:27405453
Part#: 33117525064
In Stock
$ 14.99

This product was last offered at the strikethrough price on
08-03-2026

$ 9.99 USD
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$ 9.99 USD
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Team MFactory 3.46 Pumpkin With Helical LSD - E82/88 135i, E9X 335i/i...
For vehicles with automatic transmission with production from 08/2007
Team MFactory - Corporate Logo
T#:382799
Part#: MF-TRS-05E9234KT
Ships in 10 Business Days
$ 2,276.99 USD
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$ 2,276.99 USD
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Team MFactory - Corporate Logo
T#:381010
Part#: MF-TRS-DBE92S
Ships in 6 Business Days
$ 296.99 USD
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$ 296.99 USD
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Differential Rebuild Kit Plus by Team MFactory

Upgrade your BMW's differential with the Differential Rebuild Kit Plus by Team MFactory. Whether you've recently replaced your differential or upgraded to a Limited-Slip, it's essential to replace the hardware to ensure optimal performance. This comprehensive kit from ECS Tuning includes 10 Differential Ring Gear Bolts, new axle seals, and new differential bearings, providing everything you need for a complete differential rebuild. With high-quality components, you can trust this kit to support your new differential or rebuild your existing unit effectively.

  • Comprehensive kit includes Differential Ring Gear Bolts, axle seals, and differential bearings
  • Ensures optimal performance of your BMW's differential
  • Perfect for differential replacement or upgrades to Limited-Slip
  • High-quality components for reliability and durability
  • Provides all necessary hardware for a complete rebuild
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Team MFactory 3.08 Ring/Pinion With Helical Limited-Slip Differential...
For vehicles with a manual Transmission. Includes new Ring & Pinion for bolt-on Perform...
Team MFactory - Corporate Logo
T#:380589
Part#: MF-TRS-05E9230KT
Ships in 8 Business Days
$ 2,800.00 USD
$ 2,800.00 USD
The best way to gain a prominent advantage over the competition is to do it with the MFactory Helical Limited Slip Differential. The smooth consistent distribution of power to the wheels with the MFactory Helical LSD puts the power-to-the-ground and maximises your vehicle's traction. A must for any car be it stree, strip, or track. What exactly does an LSD do you ask? well without an LSD your car is actually 1 wheel drive, in that it can't supply torque to both wheels at the same time and will only supply torque to the wheel with less grip, which is what the shortfall is to an open differential (what most vehicles have). An LSD only lets the wheels spin at different speeds by a limited amount (typically this is a percentage difference) which is when the differential locks and both wheels get power. This is not how locked differentials work such as in off road trucks which supply equal torque and rotational speed to both rear wheels at the same time, which can cause issues with handling. Features: Industry first, 30-day Feel the Torque™ money back guarantee, and a Limited-Lifetime Warranty! Forged and Cryo-tempered Advanced Shot Peening technology for increased surface hardness Designed to withstand the extreme shock loads of competition-level drag racing Maintenance-free gears eliminate the need for special fluid or rebuilds associate with typical plate LSDs. Lock-free operation ensures no adverse steering response. *Includes $600 refundable core charge to be refunded once we receive your rebuildable core.* **As a break-in procedure, we recommend changing the fluid after the first 3-400 miles of use.**
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