BMW Cooling System Parts & Accessories for BMW X Series F15 (2014+)

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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#:39978
Part#: 12517601308
Ships in 1-2 days
4% off MSRP $ 49.99

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

$ 47.99 USD
Free Shipping on orders $49 and up
4% off MSRP
$ 49.99

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

$ 47.99 USD
Free Shipping on orders $49 and up


Genuine BMW Adapter Wire, Elec. Auxiliary Water Pump -
This item fits the following BMW Chassis:
E71,F15,F16

Fits BMW Engines including:
N63,N63N

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Genuine BMW - Corporate Logo
T#:528083
Part#: 17117644872
Ships in 4 Business Days
6% off MSRP $ 84.99

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

$ 79.99 USD
Free Shipping
6% off MSRP
$ 84.99

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

$ 79.99 USD
Free Shipping
Genuine BMW - Corporate Logo
T#:55245812
Part#: 17227800XKT
In Stock
New Item
$ 24.21 USD
Free Shipping on orders $49 and up
This Maintenance Seal Kit bundles two high-failure items that should always be replaced anytime the engine oil cooler lines or oil level sensor are disturbed.

Victor Reinz - Corporate Logo
T#:580584
Part#: C32348
Ships in 7 Business Days
$ 3.99

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

$ 2.99 USD
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$ 2.99 USD
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Genuine BMW - Corporate Logo
T#:46420
Part#: 17127798499
Ships in 8 Business Days
$ 7.99 USD
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Genuine BMW Clip -
This item fits the following BMW Chassis:
E70 X5,E71

Fits BMW Engines including:
M57,N54

Precision Raceworks - Corporate Logo
T#:38161691
Part#: 201-0393-SIL
Ships in 9 Business Days
$ 109.99 USD
Free Shipping on orders $49 and up

BMW Silver Engine Coolant Reservoir Cap is a premium upgrade for BMW owners looking to enhance both the performance and appearance of their engine bay. Crafted from high-strength billet aluminum, this cap replaces the factory plastic version, offering superior durability and a refined, professional look.

Designed with functionality in mind, it integrates the OEM pressure relief system to ensure your engine's cooling system remains safe and efficient. Unlike adhesive covers, which can peel or wear over time, this cap is a direct-fit replacement, providing a secure and leak-proof seal. The silver anodized finish not only enhances the visual appeal but also ensures resistance to corrosion, high temperatures, and wear, making it perfect for daily driving and track use.

  • OEM pressure relief integration – Maintains proper cooling system performance and reliability
  • Durable billet aluminum – Outperforms factory plastic caps in longevity and strength
  • Precision-machined for perfect fitment – Replaces the stock cap securely, not just a cover
  • Anodized silver finish – Offers corrosion, heat, and wear resistance
  • Elevates engine bay aesthetics – Adds a clean, professional appearance
  • Built for both street and track use – Designed to withstand extreme conditions

Enhance your BMW’s cooling system with the BMW Silver Engine Coolant Reservoir Cap, providing both style and functionality for years to come.

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Precision Raceworks - Corporate Logo
T#:38128031
Part#: 201-0394-BLK
Ships in 10 Business Days
$ 94.99 USD
Free Shipping on orders $49 and up

BMW Black Auxiliary Coolant Reservoir Cap is the perfect upgrade for BMW owners looking to enhance both the aesthetics and functionality of their engine bay. Unlike generic aftermarket caps that overlook critical pressure regulation, this precision-engineered cap retains the OEM pressure release functionality, ensuring safe and reliable coolant system performance.

Crafted from high-quality billet aluminum, this reservoir cap offers superior durability and resistance to heat and fluids, preventing warping or degradation over time. Unlike adhesive-based cap covers that can loosen or fall off, this cap is a direct replacement for the factory component, providing a secure, high-performance solution.

  • OEM pressure release functionality – Maintains proper system regulation for optimal coolant performance
  • Premium billet aluminum construction – Offers enhanced durability and longevity
  • Direct replacement design – Secure fit without adhesives or modifications
  • Resistant to heat and fluids – Ensures long-lasting reliability in extreme conditions
  • Performance-inspired look – Adds a sleek, high-end appearance to your engine bay
  • Upgraded durability – Prevents cracking, leaks, and premature wear

Upgrade your BMW’s cooling system with the BMW Black Auxiliary Coolant Reservoir Cap, blending performance, reliability, and premium styling.

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Precision Raceworks - Corporate Logo
T#:38128029
Part#: 201-0394-BLU
Ships in 10 Business Days
$ 94.99 USD
Free Shipping on orders $49 and up

BMW Blue Auxiliary Coolant Reservoir Cap is the perfect upgrade for BMW owners looking to enhance both the aesthetics and functionality of their engine bay. Unlike generic aftermarket caps that overlook critical pressure regulation, this precision-engineered cap retains the OEM pressure release functionality, ensuring safe and reliable coolant system performance.

Crafted from high-quality billet aluminum, this reservoir cap offers superior durability and resistance to heat and fluids, preventing warping or degradation over time. Unlike adhesive-based cap covers that can loosen or fall off, this cap is a direct replacement for the factory component, providing a secure, high-performance solution.

  • OEM pressure release functionality – Maintains proper system regulation for optimal coolant performance
  • Premium billet aluminum construction – Offers enhanced durability and longevity
  • Direct replacement design – Secure fit without adhesives or modifications
  • Resistant to heat and fluids – Ensures long-lasting reliability in extreme conditions
  • Performance-inspired look – Adds a sleek, high-end appearance to your engine bay
  • Upgraded durability – Prevents cracking, leaks, and premature wear

Upgrade your BMW’s cooling system with the BMW Blue Auxiliary Coolant Reservoir Cap, blending performance, reliability, and premium styling.

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CTA Tools - Corporate Logo
T#:641679
Part#: CTAA195
In Stock
$ 9.98 USD
Free Shipping on orders $49 and up
Tests all ethylene glycol solutions with radiator hot or cold

Pierburg - Corporate Logo
T#:639135
Part#: 64119230233
Ships on Oct 28, 2026
$ 184.99 USD
Free Shipping on orders $49 and up
Genuine BMW Auxiliary Water Pump This item fits the following BMW Chassis: E70 X5M,E71 X6M,E70 X5,E71 X6,F15,F16
Gates - Corporate Logo
T#:553629
Part#: 64116910544
Ships on Oct 30, 2026
$ 280.00 USD
Free Shipping
$ 280.00 USD
Free Shipping
With additional water pump
Bosch - Corporate Logo
T#:59111522
Part#: 64116910544
Special Order: No Guaranteed ETA
New Item
$ 79.99 USD
Free Shipping on orders $49 and up
If your climate control is not running properly, you may have a failed water heater control valve. Keep your HVAC system running properly with a new Water Heater Control Valve.


2 Pin Connector
10X Entries Into Our F80 M3 Sweepstakes
ECS - Corporate Logo
T#:33412932
Part#: 61132359999
In Stock
Sale - Save 25% $ 10.99

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

$ 8.24 USD
Free Shipping on orders $49 and up
Sale - Save 25%
$ 10.99

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

$ 8.24 USD
Free Shipping on orders $49 and up

Includes connector housing with terminals and seals. Commonly used for the coolant level sensor.

ECS Tuning replacement harness connectors include all necessary pins and wire seals for a complete harness repair. Whether you have a broken harness connector or need a complete wiring repair, we have the components you need.

Each connector includes an additional terminal in case one becomes lost or damaged during installation.

*OEM cross reference PN# 61132359999 - Commonly used for the coolant level sensor.

Please reference the original part number from the existing connector to confirm fitment, before ordering.

Suggested tools:

Suggested crimping pliers: T#387193
Wire De-pin tools:
12pc De-Pin Tool Set - T#386379
23pc De-Pin Tool Set - T#641943

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Meyle Coolant Pump Thermostat - 87 Degrees - BMW N47 N57
5X Entries Into Our F80 M3 Sweepstakes
Meyle - Corporate Logo
T#:55497457
Part#: 3282280010
Ships on Dec 2, 2026
New Item
$ 35.99

This product was last offered at the strikethrough price on
06-30-2026

$ 16.99 USD
Free Shipping on orders $49 and up
$ 16.99 USD
Free Shipping on orders $49 and up
Keep your engine operating in its powerband and prevent performance-robbing heat soak with this replacement coolant thermostat from Meyle. A failing or sticky thermostat can ruin a track day or spirited drive, making a fresh, high-quality replacement essential for keeping your cooling system performing at its peak under heavy load. Engineered for crisp, reliable valve activation, it ensures your cooling system sheds heat efficiently when you are pushing your vehicle to its limits.
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BMW water pump
We Price Match - Give Us A Call or Chat!
Febi - Corporate Logo
T#:38385338
Part#: 11517596763
Special Order: No Guaranteed ETA
$ 1,067.99 USD
Free Shipping on orders $49 and up
$ 1,067.99 USD
Free Shipping on orders $49 and up
If your water pump is failing, you may notice coolant leaks or hear a whining noise from under the hood. However, with an electric water pump, failure can sometimes go unnoticed until overheating occurs. Watch for warning signs and replace your water pump promptly to avoid engine damage. For vehicles without the M Sport package.
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Febi - Corporate Logo
T#:56001934
Part#: 46221
Special Order: No Guaranteed ETA
New Item
$ 19.99 USD
Free Shipping on orders $49 and up
This Febi Bilstein coolant expansion tank cap is designed to maintain the exact 1.4 bar pressure required to maximize your coolant's boiling point.

Febi - Corporate Logo
T#:55857769
Part#: 11537598865
Special Order: No Guaranteed ETA
New Item
$ 68.99 USD
Free Shipping on orders $49 and up
This replacement thermostat from Febi Bilstein ensures your cooling system regulates precisely at the proper factory temperature parameters.
Febi - Corporate Logo
T#:56724732
Part#: 11517602123
Special Order: No Guaranteed ETA
New Item
$ 2.99 USD
Free Shipping on orders $49 and up
This Febi Bilstein water pump screw offers superior durability designed to maintain consistent clamping pressure under high thermal loads.

Meyle Replacement Water Pump
5X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!
Meyle - Corporate Logo
T#:5944166
Part#: 11518516205
Ships in 5 Business Days
$ 131.99 USD
Free Shipping
$ 131.99 USD
Free Shipping
The water pump in your vehicle keeps all that coolant flowing freely. If it begins to fail, overheating problems are inevitable. Don't take a chance on doing damage to engine internals by not replacing your water pump. This has been a common problem amongst most German vehicles. Water Pump failure can lead to your vehicle making an unnecessary trip to the repair shop. If your pump stops working, coolant temperatures rise rapidly and can overheat the engine, leading to head gasket or even piston ring failure. This is a great preventative maintenance item when doing any type of timing belt replacement. This is a common replacement around 60,000 miles.
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Pierburg - Corporate Logo
T#:380532
Part#: 11517566335
Special Order: No Guaranteed ETA
$ 247.99 USD
Free Shipping
$ 247.99 USD
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Coolant Temperature Sensor
5X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!
Meyle - Corporate Logo
T#:5886984
Part#: 13627823993
Ships on Nov 3, 2026
$ 34.99 USD
Free Shipping on orders $49 and up
Part of the EGR cooling system. Located in the coolant line near the aux water pump.

Pierburg - Corporate Logo
T#:25109083
Part#: 64119197085
Special Order: No Guaranteed ETA
$ 149.99 USD
Free Shipping on orders $49 and up
Replace your failed water pump with a brand new pump from Pierburg.
BMW Oil Cooler Gasket Set
2X Entries Into Our F80 M3 Sweepstakes
Elring - Corporate Logo
T#:15048422
Part#: 11428580681
Ships in 2 Business Days
$ 13.65 USD
Free Shipping on orders $49 and up
Replace your oil cooler gaskets whenever you remove and reinstall your oil cooler!
Meistersatz - Corporate Logo
T#:379621
Part#: 17117639020
Ships in 4 Business Days
$ 17.99 USD
Free Shipping on orders $49 and up
Quality aftermarket coolant expansion tank cap.


Coolant Hose
2X Entries Into Our F80 M3 Sweepstakes
URO - Corporate Logo
T#:30828069
Part#: 17127619702
Back Ordered
$ 50.99 USD
Free Shipping on orders $49 and up
Your cooling system is crucial for maintaining your engine's health over the long haul. Upgrade to Uro's metal flange to replace damaged or worn coolant hoses and ensure lasting performance.
Return Hose
2X Entries Into Our F80 M3 Sweepstakes
Rein - Corporate Logo
T#:17704695
Part#: 11537637059
Ships in 4 Business Days
$ 59.99 USD
Free Shipping on orders $49 and up
OE quality return hose for the cooling system.
Vent Hose
10X Entries Into Our F80 M3 Sweepstakes
Bremmen Parts - Corporate Logo
T#:39295552
Part#: 17127576363
Special Order: No Guaranteed ETA
Sale - Save 21% $ 27.99

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

$ 22.02 USD
Free Shipping on orders $49 and up
Sale - Save 21%
$ 27.99

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

$ 22.02 USD
Free Shipping on orders $49 and up