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URO BMW Cooling System Parts & Accessories

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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T#:50031902
Part#: 11537586885
In Stock
New Item
$ 77.88

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

$ 74.99 USD
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Provides optimal engine cooling performance.
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T#:1287
Part#: 11521712058
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$ 32.19 USD
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This fan is driven by the serpentine belt, engaged by the fan clutch. If you have bad motor mounts, it's quite common for the blades of this fan to make contact with the radiator or radiator shroud, essentially self-destructing the fan into many peices. Be sure to get a new fan clutch, while you are replacing this. 
With more than 4,000 European vehicle replacement parts, URO is no stranger to the market. Superior metal stock and extremely strict quality control are at the forefront of URO’s agenda and it shows as they become the OE supplier for more and more car companies every single day.

This fan fits many 6 cylinder BMWs, including the following:

1989-1994 E32 735i/iL
1991-1995 E34 525i, 535i, M5
1992-1999 E36 3 series with 6 cylinder engine (M3, 325, 328, 323)
1997-2002 Z3 2.3, 2.5, 2.8, 3.0, and MZ3 3.2 (S52)
1997-2003 E39 5 series, 525i, 528i, 530i
1999-2000 E46 3 series 323i/Ci, 328i/Ci
2001-2005 E46 3 series WITH AUTOMATIC TRANSMISSION ONLY
2001-2006 E46 M3 (all):
2001-2006 X5 3.0i
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T#:362006
Part#: 11527505302
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$ 72.99 USD
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Common source of engine overheating

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T#:377277
Part#: 17111712911
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$ 1.67 USD
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Secures the upper radiator bracket to core support.

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T#:13181
Part#: 17111723521
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$ 6.42 USD
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This is the small diameter overflow hose that goes from the coolant expansion tank to the radiator.

This item fits the following BMWs:
1992-1998 E36 BMW 323is 323ic 325i 325is 325ic 328i 328is 328ic M3
1997-1998 Z3 BMW Z3 2.8
1998-2000 Z3 BMW M Roadster M Coupe
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T#:373088
Part#: 11527831619
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$ 71.83 USD
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$ 71.83 USD
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Direct replacement

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T#:2453609
Part#: 17111712641
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$ 46.99 USD
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This coolant reservoir is for the E30 325i 1988-1991. We have found that the expansion tanks should be replaced based on age as well as condition. This item fits the following BMWs: 1988-1991 E30 BMW 325e 325es 325i 325ic 325is 325ix
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T#:361996
Part#: 61311378073
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$ 26.44 USD
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$ 26.44 USD
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Measures radiator air temperature enabling the fan to turn off or on

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T#:362003
Part#: 11531289377
In Stock
$ 13.58

This product was last offered at the strikethrough price on
04-06-2026

$ 6.50 USD
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Connects to the thermostat housing outlet.

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T#:26171674
Part#: 64216983858
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$ 44.99 USD
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Ensure optimal engine cooling in your BMW with these high-quality cooling pipes and hoses. Designed to maintain proper engine temperature, immediate replacement is necessary if cracks are detected to prevent engine overheating. This specific coolant supply hose serves the heater core, crucial for efficient heating in your vehicle.
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T#:637725
Part#: 11537598865
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$ 83.42 USD
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BMW N55 3.0L Thermostat Assembly is an essential component for maintaining optimal engine temperature in your BMW, ensuring reliable performance and longevity. A common source of cracks and leaks, the thermostat assembly plays a critical role in regulating coolant flow. This high-quality replacement from Turner Motorsport is designed to meet or exceed OEM standards, providing a dependable solution to prevent overheating and maintain your engine's efficiency.

  • Reliable Temperature Regulation: Ensures optimal engine temperature for peak performance.
  • High-Quality Replacement: Meets or exceeds OEM standards, reducing the risk of cracks and leaks.
  • Enhanced Durability: Designed to withstand the demands of the N55 3.0L engine.
  • Prevents Overheating: Critical for maintaining engine efficiency and longevity.
  • Perfect Fit: Engineered for easy installation and compatibility with your BMW N55 3.0L engine.
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T#:5416748
Part#: 11537793373
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$ 1.99 USD
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URO Coolant Bleeder Screw - Priced Each - BMW E9X F10

The URO Coolant Bleeder Screw - Priced Each - BMW E9X F10 is a crucial component for maintaining optimal performance in your BMW's cooling system. When performing routine service, ensuring that all air pockets are removed from the coolant system is vital for proper function. Air pockets in the cooling system can prevent heat from circulating properly, potentially causing issues such as reduced heating efficiency or even engine overheating if trapped behind the thermostat.

  • Ensures proper air removal from the cooling system for improved engine performance
  • Prevents air pockets from interfering with heat circulation and engine cooling
  • Easy installation for an efficient and secure fit
  • Durable construction designed to withstand high pressure and temperature conditions
  • Helps maintain a fully functional cooling system, avoiding overheating and damage
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T#:361993
Part#: 11531722218
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$ 12.89 USD
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$ 12.89 USD
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Hose from radiator to water pump
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T#:7242
Part#: 13541719966
In Stock
$ 7.99

This product was last offered at the strikethrough price on
03-31-2026

$ 7.68 USD
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This is the hose that provides coolant to heat the throttle housing on M20 engines. It is connects to the lower nipple.

This item fits the following BMWs:
1988-1991 E30 BMW 325e 325es 325i 325ic 325is 325ix
1988 E28 BMW 528e
1989-1990 E34 BMW 525i
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T#:591812
Part#: 11537549476
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$ 74.99 USD
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$ 74.99 USD
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Restore proper function to your cooling system

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T#:377077
Part#: 13621433077S
In Stock
$ 0.88

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08-12-2026

$ 0.86 USD
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Now you can just replace the o-ring instead of the whole switch

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T#:7624638
Part#: 17117521781
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$ 22.98 USD
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Commonly broken when opened to drain the radiator.
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T#:392721
Part#: 11531730470
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$ 39.99 USD
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This is a quality aftermarket replacement aluminum thermostat housing for cars with the M20 6 cylinder engine - 325e, 325i, 528e, 525i. This is the side of the housing that mounts to the cylinder head and has openings for the various coolant / engine temperature sensors. There are 4 ports for sensors so check your existing housing for the sensor layout.

If you're looking for a Genuine BMW factory replacement part, Turner Motorsport carries the Genuine BMW brand with pride and has the parts you need to complete your next project with confidence.
 

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T#:37959694
Part#: 17107523260
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$ 56.99 USD
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Constructed from high-strength, heat-resistant plastic, this component is designed to endure extreme temperatures and fluctuating pressure levels, ensuring the cooling system functions optimally and maintains peak efficiency.
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T#:372932
Part#: 11517527799
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$ 42.99 USD
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$ 42.99 USD
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Features a metal impeller for reliability

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T#:1196209
Part#: 17111711987
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$ 3.99 USD
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$ 3.99 USD
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Fits various components in the cooling system

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T#:363556
Part#: 64218367791
In Stock
$ 8.99

This product was last offered at the strikethrough price on
03-25-2026

$ 6.99 USD
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Used to connect to the inline thermostat
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T#:362013
Part#: 11531718982
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$ 5.99 USD
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Connects between the Water pump and the thermostat
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T#:363331
Part#: 64218367790
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$ 34.99 USD
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Used to connect to the inline thermostat


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T#:362004
Part#: 11531722743
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$ 42.39 USD
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$ 42.39 USD
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Attaches the thermostat to the bottom of radiator
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T#:377316
Part#: 17111436259
Ships in 1-2 days
$ 52.89

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

$ 38.99 USD
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$ 38.99 USD
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BMW E46 Cooling Fan Shroud is essential for maximizing airflow through your radiator, ensuring optimal engine cooling. This shroud is designed to create the most efficient pull of air, keeping your engine temperature under control, especially during demanding driving conditions.

  • Enhanced Cooling Efficiency: Maximizes airflow through the radiator, ensuring your engine stays cool.
  • High-Quality Construction: Manufactured by URO Parts, a leading brand known for producing reliable and durable replacement components.
  • Precision Fit: Designed specifically for the BMW E46, ensuring a perfect fit and easy installation.
  • ISO 9000 Certified: Built to meet ISO 9000 certification standards for long-lasting performance and reliability.
  • Trusted by Enthusiasts: URO Parts is a trusted name in the automotive industry, offering components that deliver OEM-like performance.

Upgrade your BMW E46 with this Cooling Fan Shroud from Turner Motorsport to enhance your vehicle’s cooling system and maintain peak performance.

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T#:380524
Part#: 17111437361
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$ 3.99 USD
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Usually stripped out after being removed

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T#:361990
Part#: 11531286914
In Stock
$ 15.99

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

$ 12.99 USD
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Hose from radiator to water pump URO Parts is one of the leading manufacturers of high quality direct replacement aftermarket components, covering a wide range of makes and models. All of their replacement parts are manufactured to ISO 9000 certification standards, so you can expect long lasting performance from URO Parts.
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T#:18468306
Part#: 17127576363
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$ 29.99 USD
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Aluminum connector vs OEM plastic The connector cracks/leaks over time causing coolant to leak and/or overheating problems Molded to OE coolant hose shape for superb fitment Engine heat and ozone resistant Durable ECD (Electro Chemical Degradation)-resistant EPDM material helps prevent electrolysis from breaking down the rubber from the inside-out Temperature rating: -40º F to 275º F (-40º C to 135º C)
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T#:639497
Part#: 13621703993
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$ 12.99 USD
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URO Parts is one of the leading manufacturers of high quality direct replacement aftermarket components, covering a wide range of makes and models. All of their replacement parts are manufactured to ISO 9000 certification standards, so you can expect long lasting performance from URO Parts. 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!
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T#:373591
Part#: 17117521071
Ships in 2 Business Days
$ 18.99

This product was last offered at the strikethrough price on
03-09-2026

$ 14.49 USD
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$ 14.49 USD
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Keep that coolant expansion tank sealed
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T#:37892133
Part#: 11517514942
Back Ordered
$ 2.09 USD
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$ 2.09 USD
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URO Coolant Pipe O-Ring - BMW N52 3.0L

Engineered to meet OE coolant pipe o-ring dimensions, the URO Coolant Pipe O-Ring ensures easy installation and a perfect fit for BMW N52 3.0L engines. It is designed to resist cooling system heat and antifreeze, providing reliable performance under demanding conditions. Constructed from durable ECD (Electro Chemical Degradation)-resistant EPDM material, it helps prevent electrolysis, extending the lifespan of your cooling system. With a temperature rating of -40º F to 275º F (-40º C to 135º C), this o-ring is built to withstand extreme temperatures. Supported by a 24-month unlimited mileage warranty, it is a dependable solution for maintaining your BMW’s cooling system efficiency.

Key Benefits:

  • Precision-molded to OE dimensions for easy installation and perfect fit.
  • Resists cooling system heat and antifreeze for reliable performance.
  • Durable ECD-resistant EPDM material prevents electrolysis.
  • Temperature rating of -40º F to 275º F for extreme condition durability.
  • Includes a 24-month unlimited mileage warranty for peace of mind.
  • Specifically designed for BMW N52 3.0L engines.
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T#:367144
Part#: 11531265059
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$ 25.99 USD
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Replace your old or cracked thermostat cover

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T#:361989
Part#: 11531279895
In Stock
$ 14.99

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

$ 12.99 USD
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During your radiator hose change, fluid loss is inevitable. Be sure to browse the website to get the proper replacement for your vehicle sent directly to your door. Also, be sure to order a new thermostat housing, as the stock plastic units often get broken or warped during removal
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T#:48608189
Part#: 17112283344
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$ 155.99 USD
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​This radiator coolant reservoir/expansion tank for E46 M3 is a common failure item as the plastic weakens and cracks, causing coolant leaks. If your E46 M3 has over 80k miles and still has the original expansion tank, we highly recommend replacing it during your next major service.
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T#:373102
Part#: 17111723520
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$ 30.99 USD
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Does not include cap or coolant level sensor


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T#:19433
Part#: 13541719967
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$ 11.99 USD
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This is the hose that provides coolant to heat the throttle housing on M20 engines. It is connected to the upper nipple.

With more than 4,000 European vehicle replacement parts, URO is no stranger to the market. Superior metal stock and extremely strict quality control are at the forefront of URO’s agenda and it shows as they become the OE supplier for more and more car companies every single day.​

This item fits the following BMWs:
1988-1991 E30 BMW 325e 325es 325i 325ic 325is 325ix
1989-1990 E34 BMW 525i
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T#:377306
Part#: 17117561757
In Stock
$ 217.99 USD
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$ 217.99 USD
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The auxiliary fan in your vehicle serves an extremely important role. When your car reaches temperatures that may be hazardous to your engine, the auxiliary fan moves air through the radiator to provide better cooling. Usually activated during times of stationary vehicle operation, it supplements the air usually driven through the radiator by driving down the road. If your vehicle is getting too hot during traffic or at stop lights, your auxiliary fans are probably faulty. Replace yours with this piece from ACM to restore the factory cooling in your vehicle and prevent catastrophic damage to your engine. Even if your fans are still operational but the blades are damaged or cracked, replacement is the only solution.
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T#:384250
Part#: 17137640514
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$ 60.74 USD
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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. You want to keep all the coolant in your vehicle in the cooling system. If your tank has experienced damage such as cracking, nipples breaking off, or mounting point damage, you will need to replace it.
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T#:593031
Part#: 17111437359
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$ 8.99 USD
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$ 8.99 USD
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This is the drain plug (adjustment screw) for manual transmission equipped cars.

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T#:29002182
Part#: 17137642160
Back Ordered
$ 80.81 USD
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Expansion tanks are susceptible to damage due to constant exposure to high ambient temperatures and chemical degradation. If your expansion tank is cracked, replacing it is crucial to prevent catastrophic engine damage from overheating.

Features:

Guaranteed fitment Precision-molded to OE dimensions for compatibility with original sensors and connections Quality materials resist engine heat and harsh cooling system environments Factory pressure-tested 24-Month Unlimited Mileage Warranty URO Parts offers more than 8,000 high-quality spare parts, many of which are specifically designed to replace factory BMW components. Their business was founded on the premise of producing parts that adhere to the highest standards of precision, materials, and workmanship. Each part is closely evaluated by a team of industry professionals to determine how to offer the best blend of durability, function, and price. If you're looking for quality replacement components at a reasonable price, look no further than URO Parts.

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T#:37892140
Part#: 17127548229
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$ 97.99 USD
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$ 97.99 USD
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URO Water Hose Assembly - BMW E9X E82 E88

Engineered to meet OE dimensions, the URO Water Hose Assembly ensures easy installation and reliable hose connections for BMW E9X, E82, and E88 models. The high-strength alloy or composite pipe material is designed to withstand intense engine heat and corrosive coolant, providing long-lasting durability. It resists warping and cracking, preventing coolant leaks and maintaining optimal engine performance. This assembly is a dependable solution for BMW owners seeking to enhance their vehicle’s cooling system reliability.

Key Benefits:

  • Manufactured to OE dimensions for easy installation and secure hose connections.
  • High-strength alloy or composite pipe material resists intense engine heat and corrosive coolant.
  • Prevents warping and cracking to avoid coolant leaks.
  • Ensures reliable cooling system performance.
  • Specifically designed for BMW E9X, E82, and E88 models.
  • Enhances durability and longevity of the cooling system.
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T#:593040
Part#: 17113400017
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$ 68.99 USD
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Secures the expansion tank to the radiator
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T#:592945
Part#: 11537541992
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$ 31.42 USD
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Heavy Duty Aluminum Connector; Cylinder Head to T-Stat Housing

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T#:361992
Part#: 11531721708
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$ 8.56 USD
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Over the years and with exposure to extremely hot coolant, the coolant hoses in your vehicle can take a beating. Being made of reinforced rubber, these hoses can fail in a number of ways. Splitting at a hose clamp, swelling, cracking, and breaking are just a few of the ways this hose can leave you stranded. Replace it at the first sign of wear to keep your coolant in your engine. With the proper diameter, bends, and lengths, this is the perfect replacement for any swelled or damaged hose. An easy installation, it's piece of mind the next time you are on a long trip or your morning commute.
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T#:26671649
Part#: 17127548224
Ships in 1-3 days
$ 96.99 USD
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$ 96.99 USD
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Ensure the longevity and safety of your vehicle's engine by replacing aging plastic and rubber cooling system components. Over time, these parts become weak points, risking engine safety with each mile driven. Dry-rot, splitting, or breaks in cooling hoses can result in antifreeze loss, leading to potential engine overheating. To prevent damage to delicate aluminum engine components, it's recommended to replace engine cooling hoses every 100,000 miles.

Thankfully, URO Parts offers a cost-effective solution to safeguard your engine from potential failure. These high-quality components ensure safe and smooth operation, free of coolant loss or overheating.

Features:

  • Formed hoses for a perfect factory fit
  • Includes hose clamps and brackets for easy installation and routing around engine accessories
  • Temperature and chemical-resistant rubber composition
  • Durable plastic construction

If you're overhauling your BMW's cooling system, replacing this critical lower hose is essential.

URO Parts provides over 8,000 high-quality spare parts, many designed to replace factory BMW components. Their commitment to precision, materials, and workmanship ensures each part meets the highest standards. With a focus on durability, function, and affordability, URO Parts delivers quality replacement components you can trust.

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T#:6920
Part#: 11531289257
In Stock
$ 10.99

This product was last offered at the strikethrough price on
04-20-2026

$ 6.76 USD
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This hose goes from the expansion tank to the water pump. Replace any hoses that show signs of wear and deterioration before it's too late.​ This item fits the following BMWs: 1984-1987 E30 BMW 325e 325es 325i 325ic 325is 325ix
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T#:639293
Part#: 17137642158
In Stock
$ 86.99

This product was last offered at the strikethrough price on
03-09-2026

$ 55.99 USD
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$ 86.99

This product was last offered at the strikethrough price on
03-09-2026

$ 55.99 USD
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URO Parts is one of the leading manufacturers of high quality direct replacement aftermarket components, covering a wide range of makes and models. All of their replacement parts are manufactured to ISO 9000 certification standards, so you can expect long lasting performance from URO Parts. 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!
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URO - Corporate Logo
T#:15445602
Part#: 11537586784
In Stock
$ 95.99 USD
Only available at this price
Free Shipping on orders $49 and up
$ 95.99 USD
Only available at this price
Free Shipping on orders $49 and up

BMW F25 F26 N54 N55 Thermostat Assembly is crucial for maintaining your vehicle's optimal cooling performance. If your BMW is experiencing cooling issues, the thermostat could be the culprit. Common symptoms include prolonged engine warm-up at highway speeds if the thermostat is stuck open, or consistent overheating if it’s stuck closed. Both conditions can lead to poor performance and potential damage to essential engine components.

  • Optimal Temperature Regulation: Ensures your engine maintains the proper operating temperature for efficient performance.
  • Prevents Overheating: Replaces faulty thermostats that can cause the engine to overheat, protecting vital components.
  • Improves Warm-Up Time: Addresses issues related to prolonged warm-up periods, enhancing overall driving comfort.
  • High-Quality Construction: Designed to meet or exceed OEM specifications for reliability and durability.
  • Easy Installation: Direct fit replacement that simplifies the repair process.

Upgrade your BMW’s cooling system with the BMW F25 F26 N54 N55 Thermostat Assembly from Turner Motorsport to ensure reliable engine performance and prevent overheating issues.

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URO - Corporate Logo
T#:362014
Part#: 13541289976
In Stock
$ 5.24 USD
Only available at this price
Free Shipping on orders $49 and up
$ 5.24 USD
Only available at this price
Free Shipping on orders $49 and up
Connects to the thermostat housing