BMW Cooling System Parts & Accessories for BMW X Series E53 (2000-2006)

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The cooling system is arguably the weakest point in numerous BMWs. If you drive an aging BMW or plan on taking your car to the track like we do, we recommend beefing up your cooling system before going to the track. Generally, the main components in your cooling system that are prone to failure include the following: expansion tank, factory hoses, water pump, thermostat, fan (especially if your vehicle comes factory with a clutch fan), and radiator. Factory BMW expansion tanks are plastic and prone to either breaking off at connection points or combusting. As factory rubber hoses age they either crack or break over time - we offer silicone cooling hose upgrades for most applications to avoid future failures. If you have an older vehicle, your water pump likely comes from the factory with a plastic impeller - we offer upgraded water pumps with metal impellers that are far more reliable. Newer model BMWs utilize electric water pumps - BMW spent millions of dollars engineering these water pumps, but they fail so often that we recommend replacing at 60,000 mile service intervals to avoid being stranded on the side of the road. In terms of thermostats, we offer various upgraded thermostats for racing applications. If your BMW utilizes a clutch fan from the factory, we have several options available in terms of universal electric fans - we recommend replacing these to avoid sending brittle plastic fan blades through your hood. For radiators, we recommend swapping out your radiator for one that does not use plastic connection points like your factory radiator.

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Genuine BMW - Corporate Logo
T#:14545
Part#: 11511439976
Ships in 1-2 days
6% off MSRP $ 51.99

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

$ 48.99 USD
Free Shipping on orders $49 and up
6% off MSRP
$ 51.99

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

$ 48.99 USD
Free Shipping on orders $49 and up
This is the coolant return pipe on the back of the water pump on the N62 and N73 engines used in the E53 X5, E60 545/550, E63 645/650, E65 745/750, E70 X5, and F02 750. This pipe connects the water pump to the valley pan and it's a compression fitting (no o-rings). Whenever the water pump or valley pan are replaced this tube should also be replaced. This is one area where you don't want to go back and re-do your work because of a leaking fitting!

When doing any sort of repair or maintenance there is no replacement for genuine factory parts. Turner Motorsport carries the Genuine BMW brand with pride and has the parts you need to complete your next project with confidence.

This item fits the following BMWs:
2004-2010 E60 BMW 545i 550i
2004-2011 E63 BMW 645ci 650i
2002-2008 E65 BMW 745i 745li 750i 750li 760i 760li Alpina B7
2009+ F01 F02 BMW 760li
2004-2006 E53 BMW X5 4.4i X5 4.8is
2007-2010 E70 BMW X5 4.8i
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Pierburg - Corporate Logo
T#:22064599
Part#: 11517524551
In Stock
$ 107.99

This product was last offered at the strikethrough price on
03-30-2026

$ 77.99 USD
Limited Qty Sale
Free Shipping on orders $49 and up
$ 107.99

This product was last offered at the strikethrough price on
03-30-2026

$ 77.99 USD
Limited Qty Sale
Free Shipping on orders $49 and up
This water pump includes the gasket (11517508535) and is a direct replacement for your stock pump. This is a water pump. The thermostat is also located in the water pump housing so you may also want to consider replacing that at the same time. This item fits the following BMWs: 2004-2005 E60 BMW 545i 2004-2005 E63 BMW 645ci 5/2002-2005 E65 BMW 745i 745li 2004-2006 E53 BMW X5 4.4i X5 4.8is
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Spal - Corporate Logo
T#:598801
Part#: 30100375
Back Ordered
$ 99.99 USD
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$ 99.99 USD
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861 CFM. High performance puller fan with straight blades. This is a universal fan for applications that require more air flow or for engine compartments that have tight tolerances such as an aftermarket turbo set up that needs more clearance. This fan is universal and you must make it fit your application. It is not a direct bolt on. Made in Italy. Size: 13.25in x 12.5in x 2.2in Airflow (CFM): 861
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Meyle Expansion Tank Cap
We Price Match - Give Us A Call or Chat!
Meyle - Corporate Logo
T#:579357
Part#: 3148009004
In Stock
Sale - Save 40% $ 14.99

This product was last offered at the strikethrough price on
05-15-2026

$ 8.99 USD
Free Shipping on orders $49 and up
Sale - Save 40%
$ 14.99

This product was last offered at the strikethrough price on
05-15-2026

$ 8.99 USD
Free Shipping on orders $49 and up
Replace worn or missing pieces.

URO - Corporate Logo
T#:34080697
Part#: 11531705210
Ships in 1 Business Day
$ 34.49

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

$ 34.47 USD
Free Shipping on orders $49 and up
$ 34.47 USD
Free Shipping on orders $49 and up
This runs from the front left side of the cylinder head under the intake manifold toward the firewall.
Mishimoto - Corporate Logo
T#:637389
Part#: MMFAN-14C
In Stock
$ 104.99 USD
Free Shipping
$ 104.99 USD
Free Shipping
This curved blade fan can be used as an upgrade to the OEM fan for more efficient cooling or fitment issues with aftermarket products. With its slim design, the fan can easily be installed flush against a radiator. For universal installation, use Mishimoto universal fan mount kit, T#363171. Features: High-flow curved blade fan provides 1300 CFM of airflow Universal fitment Compact design with a diameter of 14" and an overall thickness of only 2.65" provides increased engine bay space Mishimoto Lifetime Warranty WARNING! Prop 65 may apply to this product. Proposition 65 (Safe Drinking Water and Toxic Enforcement Act of 1968) is a California law that applies to call companies selling products in California. Prop 65 requires any listed chemical present above very low levels that are known to cause cancer, birth defects, or other reproductive harm. For more information about California Prop 65 warning see: www.P65Warnings.ca.gov.
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AGA Tools - Corporate Logo
T#:5663672
Part#: AGA-N62-6061
Ships in 7 Business Days
$ 560.99 USD
Free Shipping
$ 560.99 USD
Free Shipping
Replace the factory piece that is prone to failure.
Rein - Corporate Logo
T#:13661147
Part#: 17111437362
In Stock
$ 43.99

This product was last offered at the strikethrough price on
07-14-2026

$ 28.99 USD
Free Shipping on orders $49 and up
$ 28.99 USD
Free Shipping on orders $49 and up
This unit controls the temperature of your automatic transmission fluid

URO Premium - Corporate Logo
T#:380523
Part#: 11537502000
In Stock
$ 82.99

This product was last offered at the strikethrough price on
04-28-2026

$ 70.99 USD
Free Shipping
$ 70.99 USD
Free Shipping

The stock plastic water pipe is prone to cracking after a long life of heating and cooling cycles. This could lead to coolant loss and an overheating engine. To prevent this, the URO Premium water pipe is constructed from aluminum that can withstand as many heating and cooling cycles that could ever be thrown at it and won't crack or become brittle over time.

Fits the following BMWs:
2000-2005 E46 BMW M54 xi models
2000-2006 E53 BMW X5 M54 xi/xDrive models
2004-2006 E83 BMW X3 M54 xi/xDrive models

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Mishimoto - Corporate Logo
T#:381042
Part#: MMOC-19
In Stock
$ 218.99

This product was last offered at the strikethrough price on
05-06-2026

$ 196.99 USD
Free Shipping
$ 196.99 USD
Free Shipping
WARNING! Prop 65 may apply to this product. Proposition 65 (Safe Drinking Water and Toxic Enforcement Act of 1968) is a California law that applies to call companies selling products in California. Prop 65 requires any listed chemical present above very low levels that are known to cause cancer, birth defects, or other reproductive harm. For more information about California Prop 65 warning see: www.P65Warnings.ca.gov.
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Rein - Corporate Logo
T#:594365
Part#: 11537502000
Ships in 1 Business Day
$ 39.99 USD
Free Shipping on orders $49 and up
Water pipes are essential for proper cooling. If they are cracked, they are going to need to be replaced as soon as possible to avoid overheating your engine. This water pipe runs from the back of the water pump housing to the expansion tank hose. Includes all required seals, needed for the install.
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Febi Radiator Hose - Upper - E53
We Price Match - Give Us A Call or Chat!
Febi - Corporate Logo
T#:363756
Part#: 11537500733
In Stock
$ 61.99 USD
Free Shipping on orders $49 and up
Hose from radiator to water pump


Mishimoto - Corporate Logo
T#:19593926
Part#: MMOCULT
In Stock at Vendor
$ 599.99 USD
Free Shipping on orders $49 and up

Enhance your BMW's performance and protect its engine with this high-quality oil cooler kit

Even under ideal driving conditions, elevated oil temperatures can lead to decreased lubrication efficiency and pressure. With this oil cooler, you can maintain optimal oil temperatures for peak driving performance.

Kit Includes:

  • Four feet of stainless braided line for durability
  • Adapter fittings for easy installation
  • Oil filter sandwich adapter for seamless integration

Specifications:

  • Rows: 19
  • Overall Dimensions: 13" x 5.5" x 2"
  • Core Dimensions: 11.25" x 5.5" x 2"
  • Braided Hoses: 4ft .75 inch & 4ft 9 inch
  • Braided Hose Fittings: -10AN
  • Sandwich Plate Fittings: -10AN
  • Includes Thermostat for precise temperature and flow control

*WARNING: This product may be subject to Proposition 65 regulations in California. For more information, visit www.P65Warnings.ca.gov.

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Mishimoto - Corporate Logo
T#:378422
Part#: MMFAN14
In Stock
$ 100.99 USD
Free Shipping
$ 100.99 USD
Free Shipping
WARNING! Prop 65 may apply to this product. Proposition 65 (Safe Drinking Water and Toxic Enforcement Act of 1968) is a California law that applies to call companies selling products in California. Prop 65 requires any listed chemical present above very low levels that are known to cause cancer, birth defects, or other reproductive harm. For more information about California Prop 65 warning see: www.P65Warnings.ca.gov.
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Packaged by Turner - Corporate Logo
T#:338020
Part#: 17117573781
In Stock at Vendor
Sale - Save 2% $ 140.99

This product was last offered at the strikethrough price on
04-01-2026

Starting at $ 137.98 USD
Free Shipping
Sale - Save 2%
$ 140.99

This product was last offered at the strikethrough price on
04-01-2026

Starting at $ 137.98 USD
Free Shipping
This coolant reservoir is for the non-M E46 3-series models from 1999-2006 (M3 takes a different expansion tank). We have found that the expansion tanks should be replaced based on age as well as condition. Expansion tanks seem to have a lifespan of less than six years before they show signs of fatigue and wear. Pre-emptively replacing the expansion tank as part of an overall maintenance plan can prevent you from getting stranded from a sudden failure later on. This is the most recent expansion tank design from Hella-Behr, the OEM supplier to BMW. It replaces the original BMW part number 17137787039.

Other items to consider replacing at the same time are the radiator cap, coolant level sensor, lower radiator hose, coolant temp sensor in the lower hose, and the hose clamps. If your car has an automatic transmission you should also replace the oil cooler thermostat in the radiator frame, which is a common source for leaks.

This coolant expansion tank fits:

1999-2006 E46 3 series - 323i, 323Ci, 325i, 325Ci, 325xi, 328i, 328Ci, 330i, 330Ci & 330xi (**no M)
2004-2008 X3 SAV - X3 2.5, X3 3.0, X3 3.0si
2000-2005 X5 SAV - X5 3.0
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Mishimoto - Corporate Logo
T#:51075086
Part#: MMTS-E46-99E
In Stock
New Item
$ 91.99 USD
Free Shipping on orders $49 and up
The Mishimoto Thermostat Assembly focuses on precision fitment and long-term durability.

URO - Corporate Logo
T#:29466801
Part#: 11537509227
Ships in 1 Business Day
$ 41.99 USD
Free Shipping on orders $49 and up
$ 41.99 USD
Free Shipping on orders $49 and up

The thermostat cover in your BMW, made from plastic, is notorious for failing. After years of exposure to hot coolant, the plastic can crack, leading to significant coolant leaks and potential engine overheating.

URO Parts offers a superior solution with their high-quality thermostat cover, designed to surpass the durability of the original factory part. This replacement thermostat comes complete with a gasket for an effortless service.

Features:

Perfect Fit: Guaranteed fitment ensures a seamless replacement process. Optimal Cooling: High-flow OE-style design ensures efficient engine cooling performance. Easy Installation: Manufactured to factory housing dimensions for straightforward bolt-on installation and secure hose connections. Comprehensive Design: Includes ports for temperature sensors where applicable. Superior Materials: Constructed from high-quality alloy or composite materials that resist temperature-induced warping or cracking, preventing coolant leaks. URO Parts, with over 8,000 premium spare parts, specializes in manufacturing precise, durable replacements for factory BMW components. Committed to the highest standards of precision, materials, and workmanship, each part is rigorously tested to deliver the best combination of durability, functionality, and affordability. For reliable replacement parts that offer great value, choose URO Parts.

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URO - Corporate Logo
T#:592908
Part#: 11531440192
Ships in 1 Business Day
$ 0.97 USD
Free Shipping on orders $49 and up
Seals the thermostat to the water pump

Spal - Corporate Logo
T#:583648
Part#: 30100400
In Stock
$ 111.99 USD
Free Shipping
$ 111.99 USD
Free Shipping
Low profile design makes an easy fit when clearance is an issue. 1300 CFM.
Spal - Corporate Logo
T#:598910
Part#: 30130013
In Stock at Vendor
$ 6.99 USD
Free Shipping on orders $49 and up
Wire pin used to mount electric fan directly to radiator.

MMX Performance - Corporate Logo
T#:29002094
Part#: MMR03-1502
Ships in 2 Business Days
$ 127.99 USD
Free Shipping on orders $49 and up
The MMX Performance 90mm billet coolant expansion cap for BMWs has been designed from the ground up in the UK, from a solid piece of billet aluminum. Each cap was designed to directly replace the OE cap, not merely stuck in place. Fitment is for models with the matching OE (17 11 7 639 021) part number.
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Mishimoto - Corporate Logo
T#:640347
Part#: MMTS-E46-99V2
Ships in 3 Business Days
$ 135.99 USD
Free Shipping
$ 135.99 USD
Free Shipping
Spal - Corporate Logo
T#:598821
Part#: 30101516
Ships in 3 Business Days
11% off MSRP $ 168.99

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

$ 149.99 USD
Free Shipping
11% off MSRP
$ 168.99

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

$ 149.99 USD
Free Shipping
1469 CFM. High performance puller fan with straight blades. This is a universal fan for applications that require more air flow or for engine compartments that have tight tolerances such as an aftermarket turbo set up that needs more clearance. This fan is universal and you must make it fit your application. It is not a direct bolt on. Made in Italy. Size: 16.3in x 15.75in x 2.48in Airflow (CFM): 1469
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Febi Coolant Pipe - E53, E60, E63, E64, E65, E66, E70, F02
We Price Match - Give Us A Call or Chat!
Febi - Corporate Logo
T#:385560
Part#: 11511439976
Ships in 1 Business Day
$ 20.99

This product was last offered at the strikethrough price on
05-07-2026

$ 17.99 USD
Free Shipping on orders $49 and up
$ 17.99 USD
Free Shipping on orders $49 and up
Connects the inlet of the water pump to the valley pan


URO - Corporate Logo
T#:591954
Part#: 17111707777
Ships in 1 Business Day
$ 6.99 USD
Free Shipping on orders $49 and up
Locks the expansion tank into the mounting plate via the large hole in the bottom of the tank
URO - Corporate Logo
T#:377303
Part#: 17107514964
Ships in 1 Business Day
$ 52.30 USD
Free Shipping on orders $49 and up
The coolant expansion tank in your vehicle gives additional fluid a place to go after expansion and contraction from temperature change. Because it is subjected to such drastic changes on a regular basis, it can often crack or break.
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URO - Corporate Logo
T#:639269
Part#: 11537509357
In Stock
$ 2.99 USD
Free Shipping on orders $49 and up
Prevent leaks with a brand new thermostat housing gasket from URO

URO - Corporate Logo
T#:373103
Part#: 17137787039
Ships in 1 Business Day
$ 45.99 USD
Free Shipping on orders $49 and up
We have found that the expansion tanks should be replaced based on age as well as condition. Expansion tanks seem to have a lifespan of less than six years before they show signs of fatigue and wear. Pre-emptively replacing the expansion tank as part of an overall maintenance plan can prevent you from getting stranded from a sudden failure later on.
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Spal - Corporate Logo
T#:25507142
Part#: SPL185TS
Back Ordered
$ 44.99 USD
Free Shipping on orders $49 and up
This part replaces faulty thermo-switches found in Spal electric fan conversion kits.
Spal - Corporate Logo
T#:598861
Part#: 30100385
In Stock at Vendor
15% off MSRP $ 130.99

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

$ 111.99 USD
Free Shipping on orders $49 and up
15% off MSRP
$ 130.99

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

$ 111.99 USD
Free Shipping on orders $49 and up
1038 CFM. High performance puller fan with curved blades. This is a universal fan for applications that require more air flow or for engine compartments that have tight tolerances such as an aftermarket turbo set up that needs more clearance. This fan is universal and you must make it fit your application. It is not a direct bolt on. Made in Italy. Size: 15.2in x 14.5in x 2.2in Airflow (CFM): 1038
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Spal - Corporate Logo
T#:583649
Part#: 30102048
In Stock
$ 207.99 USD
Free Shipping
$ 207.99 USD
Free Shipping
Universal fan that allows increased cooling capacity and shroudless design. 1959 CFM.
URO - Corporate Logo
T#:362916
Part#: 17101439113
Ships in 1 Business Day
$ 4.99 USD
Free Shipping on orders $49 and up
The mount is used to create a sturdy fit for your radiator and help reduce shock to the unit from uneven roads


Spal - Corporate Logo
T#:598825
Part#: 30130074
In Stock at Vendor
$ 17.99 USD
Free Shipping on orders $49 and up
Provides .25" stand off from radiator, does not work with high output fans.
Victor Reinz - Corporate Logo
T#:19157
Part#: 11517508535
In Stock at Vendor
$ 26.99

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

$ 23.99 USD
Free Shipping on orders $49 and up
$ 23.99 USD
Free Shipping on orders $49 and up


PROFILE-GASKET 11517508535 Manufactured by Reinz

CSF - Corporate Logo
T#:638784
Part#: 3178
Ships in 3 Business Days
$ 138.99 USD
Free Shipping
$ 138.99 USD
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CSF radiators are designed and built to High-Performance Standards & sold worldwide for over 50 years - over 30 Million Units Sold! CSF's radiators are carefully engineered and Wind Tunnel tested for Cooling Performance Validation. CSF has over 10,000 different models of radiators that they manufacture and supply for all the leading brands of vehicles on the road.
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Rein - Corporate Logo
T#:592015
Part#: 17137501959
Ships in 2 Business Days
$ 74.99 USD
Free Shipping
$ 74.99 USD
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Includes vent screw and leveling switch
Rein - Corporate Logo
T#:591949
Part#: 17107514964
Back Ordered
$ 80.99 USD
Free Shipping
$ 80.99 USD
Free Shipping
Includes bleeder screw
Rein - Corporate Logo
T#:582356
Part#: 11537509227
Ships in 3 Business Days
$ 89.99 USD
Free Shipping
$ 89.99 USD
Free Shipping
Stop leaks before they start with this new Thermostat With Housing from Rein.

Nissens - Corporate Logo
T#:596465
Part#: 17101439101
Ships in 1 Business Day
$ 183.01 USD
$ 183.01 USD
More than likely, you are going to replace the radiator in your vehicle at least once. The joints where the cores meet the end tanks tend to get weak and are the first place to spring a leak. Impacts to the fins themselves can cause holes to form. Corrosion and clogging from the inside can make cooling less than effective and compromise coolant flow. Replace your leaking unit with a factory replacement and get that jug of coolant out of your back seat.
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Mahle-Behr - Corporate Logo
T#:371683
Part#: 17417505109
Ships in 1 Business Day
$ 247.81 USD
Free Shipping
$ 247.81 USD
Free Shipping
This clutch engages the belt-driven engine fan when the engine is warm/hot, and dis-engages the fan when cold/cool. These commonly fail, causing the engine fan to not spin fast enough (or at all) when your car is stopped in traffic, causing engine to overheat.

This item fits the following BMWs:
2002-2006  E65 BMW  745i 745li 760i 760li
2000-2003  E53 BMW  X5 4.4i X5 4.6is
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Rein - Corporate Logo
T#:379748
Part#: 64218409064
Ships in 3 Business Days
$ 12.99 USD
Free Shipping on orders $49 and up
Over time, coolant hoses begin to get brittle and are susceptible to cracking and splitting. Replace your cracked or leaking coolant hose to prevent further leaks and potentially catastrophic failure.

Rein - Corporate Logo
T#:375370
Part#: 11537500750
Ships in 3 Business Days
$ 33.99 USD
Free Shipping on orders $49 and up

Replace your cracked or leaking radiator hose to prevent further leaks and potentially catastrophic failure.

This item fits the following BMWs: 
2000-2003 E53 BMW X5 4.4i 4.6is

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Spal - Corporate Logo
T#:598818
Part#: 30102113
In Stock at Vendor
$ 257.99 USD
Free Shipping
$ 257.99 USD
Free Shipping
2467 CFM. High performance puller fan with curved blades. This is a universal fan for applications that require more air flow or for engine compartments that have tight tolerances such as an aftermarket turbo set up that needs more clearance. This fan is universal and you must make it fit your application. It is not a direct bolt on. Made in Italy. Size: 16.25in x 15.75in x 3.5in Airflow (CFM): 2467
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URO Premium - Corporate Logo
T#:180693
Part#: 11141439975R
In Stock
$ 300.67 USD
Free Shipping
$ 300.67 USD
Free Shipping
NOW LOCATED UNDER T#338249

Rein - Corporate Logo
T#:363439
Part#: 11537505950
Ships in 1 Business Day
$ 27.99 USD
Free Shipping on orders $49 and up

Replace your cracked or leaking radiator hose to prevent further leaks and potentially catastrophic failure.

This item fits the following BMWs: 
2000-2003 E53 BMW X5 4.4i 4.6is

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Graf - Corporate Logo
T#:581199
Part#: PA1040
Ships in 1 Business Day
$ 149.61

This product was last offered at the strikethrough price on
05-04-2026

$ 136.91 USD
Free Shipping
$ 136.91 USD
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Includes required sealing gaskets and o-ring
URO - Corporate Logo
T#:372929
Part#: 11511713266
Ships in 1 Business Day
$ 98.99 USD
Free Shipping
$ 98.99 USD
Free Shipping
Equipped with metal impeller for efficient flow and greater durability (OE plastic impellers can shatter and clog cooling system passages with broken pieces) Guaranteed fitment Manufactured to OE dimensions for easy installation and proper pulley alignment Constructed of high-strength alloy and composite materials (where applicable) Quality bearings and seals for long-term reliability Function-tested for performance
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Rein - Corporate Logo
T#:379731
Part#: 11537500746
In Stock at Vendor
$ 64.99 USD
Free Shipping
$ 64.99 USD
Free Shipping

Replace your cracked or leaking radiator hose to prevent further leaks and potentially catastrophic failure.

This item fits the following BMWs: 
2000-2003 E53 BMW X5 4.4i 4.6is

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Rein - Corporate Logo
T#:362526
Part#: 17127526856
Back Ordered
$ 83.99 USD
Free Shipping
$ 83.99 USD
Free Shipping

Replace your cracked or leaking radiator hose to prevent further leaks and potentially catastrophic failure.

Fits the following BMWs:
2003+ E53 BMW X5 N62 4.4L 4.8L

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