BMW Cooling System Parts & Accessories for BMW 2 Series F23 (2015+)

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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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Vargas Radiator Hose Kit - Red - BMW B58 Gen 1
2X Entries Into Our F80 M3 Sweepstakes
Vargas Turbo Technologies - Corporate Logo
T#:51848512
Part#: VTT-B58-RHKRED
Ships on Sep 30, 2026
New Item
$ 389.99 USD
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$ 389.99 USD
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The VTT Billet/Silicone Radiator Hose Kit in Red is the ultimate "set it and forget it" upgrade for the F2X and F3X 1, 2, 3, and 4 Series.
Rein - Corporate Logo
T#:55965849
Part#: 11537598865
Ships in 4 Business Days
New Item
$ 79.99 USD
$ 79.99 USD
A malfunctioning or lazy thermostat can lead to poor fuel trim efficiency, sluggish performance, and destructive overheating. This Rein thermostat assembly is engineered as a robust direct replacement for your worn factory unit, ensuring proper coolant regulation through the radiator under heavy loads.
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Vargas Lower Radiator Hose - Black - BMW B58 Gen 1
2X Entries Into Our F80 M3 Sweepstakes
Vargas Turbo Technologies - Corporate Logo
T#:51848508
Part#: VTT-B58-LRHBLK
Ships on Sep 30, 2026
New Item
$ 222.99 USD
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$ 222.99 USD
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The VTT Billet/Silicone Lower Radiator Hose is a professional-grade replacement for the factory B58 Gen 1 lower radiator line.

Nissens - Corporate Logo
T#:27905106
Part#: 11428583901
Ships in 3 Business Days
$ 106.99

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

$ 103.99 USD
Free Shipping on orders $49 and up
$ 103.99 USD
Free Shipping on orders $49 and up
Engine oil coolers help reduce the oil temperature, preventing the oil from breaking down prematurely and losing its lubricating properties. Engine oil coolers play a crucial role in regulating oil temperature, ensuring proper lubrication, and optimizing engine performance and longevity. Engine oil that is too hot drops in viscosity and does not provide adequate lubrication to sensitive engine components such as bearings, which can fail catastrophically if not properly lubricated. If your engine oil cooler has been damaged or has failed we recommend replacing it to ensure no damage occurs to your engine.
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Vargas Billet HMM Delete Kit - BMW B58TU
Fits all B58 TU / Gen 2 B58 engines
2X Entries Into Our F80 M3 Sweepstakes
Vargas Turbo Technologies - Corporate Logo
T#:51672725
Part#: VTT-B58-COOLING-
Ships on Sep 30, 2026
New Item
$ 199.99 USD
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$ 199.99 USD
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The VTT Billet B58 HMM Delete is for enthusiasts who want to remove the bulky, plastic factory coolant unit in favor of a robust, motorsport-oriented setup.
Vargas Turbo Technologies - Corporate Logo
T#:51778122
Part#: VTT-B58-OIL-COOL
Ships on Sep 30, 2026
New Item
$ 157.99 USD
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$ 157.99 USD
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The VTT Billet B58 Remote Oil Cooler Adapter is an ideal upgrade for B58-powered platforms.

Genuine BMW Radiator - F30 F32 F31 F22 F33 F23
For vehicles with M Sport package (P337A), Sport Line (P7ACA) and High Speed Synchronis...
Genuine BMW - Corporate Logo
T#:46036
Part#: 17117600697
Ships in 3 Business Days
9% off MSRP $ 351.99

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

$ 321.99 USD
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9% off MSRP
$ 351.99

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

$ 321.99 USD
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Genuine BMW Additional Radiator -
This item fits the following BMW Chassis:
F22,F30,F31,F32,F33,F34,F36

Fits BMW Engines including:
N20,N26,N55

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Genuine BMW - Corporate Logo
T#:27372125
Part#: 11537642854KT
Ships in 3 Business Days
$ 599.99

This product was last offered at the strikethrough price on
08-07-2026

$ 580.99 USD
Free Shipping on orders $49 and up
$ 580.99 USD
Free Shipping on orders $49 and up

Restore your engine's coolant flow control with this Genuine BMW Heat Management Module (HMM) replacement kit, designed for BMW B58 engines.

Key Features:

Advanced coolant flow control with an electronically controlled rotary valve Rapid engine warmup for optimal performance in various driving conditions Precise temperature management to prevent overheating Includes sealing o-rings, hardware, and gaskets for a secure installation Compatible with BMW B58 engines for seamless integration How to Identify a Faulty Heat Management Module:

Engine overheating due to a stuck rotary valve in the "rapid warmup" position Failure to reach the operating temperature Fault codes 20F220, 20F206, 20A704 indicating potential HMM issues Don't compromise on engine performance. Replace your Heat Management Module today for optimal cooling and efficiency.

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Genuine BMW - Corporate Logo
T#:557275
Part#: 11518635090KT2
Ships in 3 Business Days
$ 1,306.99 USD
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$ 1,306.99 USD
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The water pumps in these BMW models are known for failure near 80,000 miles is a very common issue often times leaving the owner stranded. This kit provides a single stop for water pump and thermostat replacement needs to save the search and get you back on the road.

Kit includes:

  • Genuine BMW Thermostat
  • Genuine BMW Electric Water Pump
  • Genuine BMW coolant
  • Mounting hardware required for both the thermostat and water pump
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Genuine BMW - Corporate Logo
T#:545300
Part#: 11538630023
Ships in 3 Business Days
6% off MSRP $ 329.99

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

$ 309.99 USD
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6% off MSRP
$ 329.99

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

$ 309.99 USD
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Coolant pipe that runs from the thermostat next to the engine block. Make sure your cooling system is working properly and leak free. When your in the tight spaces doing a service it makes sense to change all associated parts.
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Genuine BMW - Corporate Logo
T#:46032
Part#: 17117600539
Ships in 3 Business Days
$ 12.99 USD
Free Shipping on orders $49 and up


Genuine BMW Module Bushing -
This item fits the following BMW Chassis:
F22,F30,F31,F32,F33,F34,F36

Fits BMW Engines including:
N20,N26,N55

Genuine BMW Coolant Hose
For vehicles with automatic transmission and M Sport Package
Genuine BMW - Corporate Logo
T#:46363
Part#: 17127596841
Ships in 3 Business Days
6% off MSRP $ 89.99

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

$ 84.99 USD
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6% off MSRP
$ 89.99

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

$ 84.99 USD
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Replace your cracked or leaking radiator hose to prevent further leaks and potentially catastrophic failure. 

Genuine BMW radiator hoses are always a perfect option when performing maintenance thanks to their high quality and longevity.

This item fits the following BMW Chassis:
F22,F30,F31,F32,F33,F34,F36

Fits BMW Engines including:
N20,N26

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Genuine BMW - Corporate Logo
T#:222898
Part#: 17118625434
Ships in 3 Business Days
5% off MSRP $ 42.99

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

$ 40.99 USD
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5% off MSRP
$ 42.99

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

$ 40.99 USD
Free Shipping on orders $49 and up
Genuine Bmw Seal, Lower - 17118625434
Hose Clamp
15,3-18,5
Genuine BMW - Corporate Logo
T#:57823
Part#: 32411131346
Ships in 3 Business Days
$ 4.53 USD
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$ 4.53 USD
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Genuine BMW Hose Clamp - 15,3-18,5
This item fits the following BMW Chassis:
E70 X5M,E71 X6M,E70 X5,E71 X6,F06,F10,F12,F13,F22,F30,F31,F32,F33,F34,F36

Genuine BMW - Corporate Logo
T#:56110319
Part#: 17125B3AE07
In Stock
New Item
6% off MSRP $ 104.99

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

$ 98.99 USD
Free Shipping on orders $49 and up
6% off MSRP
$ 104.99

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

$ 98.99 USD
Free Shipping on orders $49 and up

Genuine BMW - Corporate Logo
T#:188339
Part#: 51747290608
Ships in 3 Business Days
4% off MSRP $ 46.99

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

$ 44.99 USD
Free Shipping on orders $49 and up
4% off MSRP
$ 46.99

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

$ 44.99 USD
Free Shipping on orders $49 and up


Genuine BMW Air Ducting For Amoek, Right -
This item fits the following BMW Chassis:
F22


Genuine BMW - Corporate Logo
T#:545336
Part#: 17128608773
Ships in 5 Business Days
$ 3.99 USD
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$ 3.99 USD
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Genuine BMW Cooling Fan Assembly with Shroud (400W) - F30 F23 F22 F33...
Located between radiator and engine. Not for cars with Tow Hitch S235A, Hot Climate Version S823A, or Trailer Coupling S8SLA...
Genuine BMW - Corporate Logo
T#:210157
Part#: 17428641963
Ships in 3 Business Days
6% off MSRP $ 942.99

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

$ 884.99 USD
6% off MSRP
$ 942.99

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

$ 884.99 USD


Genuine BMW Fan Housing With Fan - 400W
This item fits the following BMW Chassis:
F22,F30,F33

Fits BMW Engines including:
N20


Genuine BMW - Corporate Logo
T#:613575
Part#: 64116834917
In Stock
10% off MSRP $ 278.99

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

$ 251.99 USD
Limited Qty Sale
Free Shipping
10% off MSRP
$ 278.99

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

$ 251.99 USD
Limited Qty Sale
Free Shipping
eplace your faulty or failing electric water pump with this Genuine BMW pump for guaranteed reliability. This water pump feeds coolant to the turbo, keeping temperatures optimal for performance and smooth operation.
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Genuine BMW - Corporate Logo
T#:46409643
Part#: 11515B51A33
Ships in 3 Business Days
2% off MSRP $ 787.99

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

$ 771.99 USD
Free Shipping on orders $49 and up
2% off MSRP
$ 787.99

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

$ 771.99 USD
Free Shipping on orders $49 and up

Genuine BMW - Corporate Logo
T#:187367
Part#: 17427640647
Ships in 5 Business Days
4% off MSRP $ 208.99

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

$ 199.99 USD
Free Shipping
4% off MSRP
$ 208.99

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

$ 199.99 USD
Free Shipping


Genuine BMW Fan Shroud -
This item fits the following BMW Chassis:
F22,F30,F33

Fits BMW Engines including:
N20


Genuine BMW - Corporate Logo
T#:600635
Part#: 11518482744
Ships in 3 Business Days
8% off MSRP $ 379.99

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

$ 347.99 USD
Free Shipping
8% off MSRP
$ 379.99

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

$ 347.99 USD
Free Shipping
Genuine BMW - Corporate Logo
T#:179887
Part#: 17517600544
In Stock
9% off MSRP $ 31.99

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

$ 28.99 USD
Limited Qty Sale
Free Shipping on orders $49 and up
9% off MSRP
$ 31.99

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

$ 28.99 USD
Limited Qty Sale
Free Shipping on orders $49 and up


Genuine BMW Sealing -
This item fits the following BMW Chassis:
F22,F30,F31,F32,F33,F34,F36

Fits BMW Engines including:
N20,N26,N55

Genuine BMW - Corporate Logo
T#:27372127
Part#: 11537642854KT3
Ships in 3 Business Days
$ 608.99

This product was last offered at the strikethrough price on
08-07-2026

$ 588.99 USD
Free Shipping on orders $49 and up
$ 588.99 USD
Free Shipping on orders $49 and up

Restore your engine's coolant flow control with this Genuine BMW Heat Management Module (HMM) replacement kit, designed for BMW B58 engines.

Key Features:

Advanced coolant flow control with an electronically controlled rotary valve Rapid engine warmup for optimal performance in various driving conditions Precise temperature management to prevent overheating Includes sealing o-rings, hardware, and gaskets for a secure installation Compatible with BMW B58 engines for seamless integration How to Identify a Faulty Heat Management Module:

Engine overheating due to a stuck rotary valve in the "rapid warmup" position Failure to reach the operating temperature Fault codes 20F220, 20F206, 20A704 indicating potential HMM issues Don't compromise on engine performance. Replace your Heat Management Module today for optimal cooling and efficiency.

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Genuine BMW - Corporate Logo
T#:46421
Part#: 17127799184
Ships in 3 Business Days
$ 19.99 USD
Free Shipping on orders $49 and up


Genuine BMW Lock -
This item fits the following BMW Chassis:
E71,F15

Fits BMW Engines including:
N54,N55,N57N

Genuine BMW - Corporate Logo
T#:46404
Part#: 17127624676
Ships in 3 Business Days
6% off MSRP $ 99.99

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

$ 93.99 USD
Free Shipping
6% off MSRP
$ 99.99

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

$ 93.99 USD
Free Shipping


Genuine BMW Coolant Hose -
This item fits the following BMW Chassis:
F22,F30,F31,F32,F33,F34,F36

Fits BMW Engines including:
N20,N26

Genuine BMW - Corporate Logo
T#:526204
Part#: 11538658572
In Stock
$ 8.99 USD
Free Shipping on orders $49 and up
O ring that seals the thermostat to the coolant pump. New seals are a must when doing any repairs.

Genuine BMW - Corporate Logo
T#:548443
Part#: 51748061354
Ships in 3 Business Days
5% off MSRP $ 128.99

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

$ 122.99 USD
Free Shipping on orders $49 and up
5% off MSRP
$ 128.99

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

$ 122.99 USD
Free Shipping on orders $49 and up

Hudson - Corporate Logo
T#:55281787
Part#: 17127596838
Ships in 1-2 days
New Item
$ 46.99 USD
Free Shipping on orders $49 and up
Connects the thermostat to the radiator
Genuine BMW - Corporate Logo
T#:178268
Part#: 17127596839
In Stock
9% off MSRP $ 126.99

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

$ 114.99 USD
Limited Qty Sale
Free Shipping
9% off MSRP
$ 126.99

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

$ 114.99 USD
Limited Qty Sale
Free Shipping


Genuine BMW Coolant Hose -
This item fits the following BMW Chassis:
F22,F30,F31,F32,F33,F34,F36

Fits BMW Engines including:
N20,N26


Hose Clamp 2 5/16" - 3 1/4" - priced each
10X Entries Into Our F80 M3 Sweepstakes
ECS - Corporate Logo
T#:376806
Part#: 54155K23
Ships in 1-2 days
$ 4.99 USD
Free Shipping on orders $49 and up

Hose Clamp 2 5/16" - 3 1/4"

Ensure secure hose connections with the Hose Clamp 2 5/16" - 3 1/4", a versatile and reliable solution for various applications. Crafted from durable materials, this clamp offers superior strength and corrosion resistance. Its adjustable design allows for a snug fit, reducing the risk of leaks and ensuring optimal performance. Upgrade your hose connections with the precision and reliability of the Hose Clamp 2 5/16" - 3 1/4".

  • Versatile and reliable solution for various applications
  • Superior strength and corrosion resistance
  • Adjustable design for a snug fit
  • Reduces risk of leaks for optimal performance
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Genuine BMW - Corporate Logo
T#:618108
Part#: 64216931740
Ships in 6 Business Days
$ 5.99 USD
Free Shipping on orders $49 and up
$ 5.99 USD
Free Shipping on orders $49 and up

Genuine BMW - Corporate Logo
T#:206381
Part#: 17227626318
Ships in 6 Business Days
6% off MSRP $ 249.99

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

$ 234.99 USD
Free Shipping
6% off MSRP
$ 249.99

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

$ 234.99 USD
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Typical signs of a bad oil cooler line are an oil leak or low oil levels. replace these at the first signs of failure to reduce the chance of future issues. Genuine BMW Transmission Oil Cooler Line - This item fits the following BMW Chassis: F30,F32,F33,F34,F36 Fits BMW Engines including: N55
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Genuine BMW - Corporate Logo
T#:202115
Part#: 17127596840
Ships in 6 Business Days
6% off MSRP $ 99.99

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

$ 93.99 USD
Free Shipping
6% off MSRP
$ 99.99

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

$ 93.99 USD
Free Shipping


Genuine BMW Coolant Hose -
This item fits the following BMW Chassis:
F30,F31,F32,F33,F34,F36

Fits BMW Engines including:
N20,N26

Victor Reinz - Corporate Logo
T#:580584
Part#: C32348
Ships in 3 Business Days
$ 3.99

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

$ 2.99 USD
Free Shipping on orders $49 and up
$ 2.99 USD
Free Shipping on orders $49 and up
Feed Line - F22, F30, F33, F36
For Manual Transmission Only
Genuine BMW - Corporate Logo
T#:36096
Part#: 11537598237
Ships in 3 Business Days
4% off MSRP $ 248.99

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

$ 237.99 USD
Free Shipping on orders $49 and up
4% off MSRP
$ 248.99

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

$ 237.99 USD
Free Shipping on orders $49 and up


Genuine BMW Feed Line -
This item fits the following BMW Chassis:
F22,F30,F32,F33,F36

Fits BMW Engines including:
N55



Genuine BMW - Corporate Logo
T#:626517
Part#: 61129313076
Ships in 9 Business Days
2% off MSRP $ 228.99

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

$ 224.99 USD
Free Shipping on orders $49 and up
2% off MSRP
$ 228.99

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

$ 224.99 USD
Free Shipping on orders $49 and up
If your stock harness is faulty or has been damaged, it's best to replace it with a Genuine BMW repair harness to ensure problem-free operation going forward.
Genuine BMW - Corporate Logo
T#:544479
Part#: 17128616817
Ships in 9 Business Days
6% off MSRP $ 33.99

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

$ 31.99 USD
Free Shipping on orders $49 and up
6% off MSRP
$ 33.99

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

$ 31.99 USD
Free Shipping on orders $49 and up
Mosselman Turbosystems - Corporate Logo
T#:50101777
Part#: 30210057
Ships in 8 Business Days
$ 399.00 USD
Free Shipping on orders $49 and up
The N55 engine is no stranger to oil cooling problems, that’s why we recommend installing the MSL Oil Thermostat. The standard oil thermostat will reach around 120 degrees Celsius with a normal driving style. The MSL Oil Thermostat will open at a lower temperature than the standard oil thermostat (at 85 degrees Celsius) and will keep the temperature stable between 95 and 105 degrees Celsius. Installing the MSL thermostat ensures a cooler oil temperature which will result in more stable performance, but above all this improves the reliability of the engine. It is recommended to install the thermostat, especially for cars that are tuned.
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Burgaflex - Corporate Logo
T#:57725187
Part#: 11537541992
Ships in 7 Business Days
New Item
$ 26.99 USD
Free Shipping on orders $49 and up
The Burgaflex Coolant Outlet Hose delivers track-ready reliability for high-demand driving conditions.

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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MTC - Corporate Logo
T#:27405534
Part#: 17138617045
Ships in 10 Business Days
$ 64.46 USD
Free Shipping on orders $49 and up
Your charge air cooler's coolant expansion tank acts as a reservoir, housing extra coolant, and gives fluid a place to go after expansion and contraction from temperature change. Because the plastic tank is subjected to regular temperature changes, the plastic can become brittle over time and will often crack or break. If your tank is leaking and you lose too much coolant, your charge air cooler will not function properly and your air intake temperatures will begin to rise, reducing horsepower and efficiency. 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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Precision Raceworks - Corporate Logo
T#:47679257
Part#: 622-0291-BLAK
Ships in 10 Business Days
$ 184.99 USD
Free Shipping on orders $49 and up
$ 184.99 USD
Free Shipping on orders $49 and up
The Precision Raceworks Billet Coolant Cap Set is a functional and stunningly stylish way to add a nice touch to any engine bay! These caps come in three color options, so there is always a color that will work for you! Black with Billet Silver, Black with Blue, and the Stealth series (all black). Many people don't realize it, but the OEM caps have a pressure release valve built into them. Oftentimes, aftermarket companies don't know this either or just don't care. But our team cares about proper function just as much as we care about the appearance of every product we design. For pressure relief, our caps incorporate the OEM internals, so you get all the functionality of the original caps, ensuring a safe and reliable system in place. These caps offer superior style and performance-grade components that guarantee a reliable fit every time. Durable billet aluminum construction provides long-lasting protection and dependability that will upgrade your engine bay for years to come. PLEASE NOTE: These do require assembly and swapping the pressure relief valves from your old caps to your new billet caps.
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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
Burgaflex - Corporate Logo
T#:57725189
Part#: 11538663517
Ships on Oct 8, 2026
New Item
$ 53.99 USD
Free Shipping on orders $49 and up
Keep your turbo charger running cool and performing reliably under demand with this high-quality Burgaflex Turbocharger Coolant Return Line.
Burgaflex - Corporate Logo
T#:57725188
Part#: 11538663516
Ships on Oct 8, 2026
New Item
$ 53.99 USD
Free Shipping on orders $49 and up
The Burgaflex turbo cooling line supply delivers robust, track-ready durability for your forced-induction cooling circuit.


Bosch - Corporate Logo
T#:57231537
Part#: 039202411E
Special Order: No Guaranteed ETA
New Item
$ 239.99 USD
Free Shipping on orders $49 and up
Maintain precise thermal management and protect critical engine components with this high-efficiency auxiliary water pump from Bosch.
OEM Elring Water Pump Gasket - BMW Gen1 B46/B48 2.0L
2X Entries Into Our F80 M3 Sweepstakes
Elring - Corporate Logo
T#:45483624
Part#: B07.530
Ships on Oct 2, 2026
$ 7.99 USD
Free Shipping on orders $49 and up
$ 7.99 USD
Free Shipping on orders $49 and up
If your water pump has to be removed or is already leaking coolant, it is important to replace the gaskets to prevent coolant loss and overheating.