BMW Cooling System Parts & Accessories for BMW 3 Series F30 (2012+)

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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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BMW Turbo Cooling Line
2X Entries Into Our F80 M3 Sweepstakes
Rein - Corporate Logo
T#:46478582
Part#: CHT0690
Back Ordered
$ 56.00

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

$ 55.99 USD
Free Shipping on orders $49 and up
$ 55.99 USD
Free Shipping on orders $49 and up
Your turbo is constantly working under extreme heat and pressure, generating serious boost every time you get on the gas. The turbo cooling lines are responsible for circulating coolant through the turbocharger, keeping temperatures in check and safeguarding internal components from excessive heat. With time, these lines can corrode, crack, or clog—compromising coolant flow and system efficiency. If left unchecked, a failing line can lead to overheating, loss of performance, or even costly turbo damage. Why replacing them matters: Protect your turbo – Ensures proper cooling to prevent heat soak and extend turbo life. Stop leaks early – Prevent small coolant drips from turning into bigger, more expensive problems. Keep performance consistent – Reliable cooling means steady boost and dependable operation. Don’t let a tired cooling line put your turbo at risk—replace it and keep your forced-induction system performing at its best.
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URO - Engine Oil Thermostat
2X Entries Into Our F80 M3 Sweepstakes
URO - Corporate Logo
T#:33446277
Part#: 11427637052
Ships in 2 Business Days
$ 143.99 USD
Free Shipping on orders $49 and up
An engine oil thermostat regulates engine oil temperature which is a critical function that keeps the engine oil at an optimal temperature which can improve the engines life span.
Engine Oil Cooler
2X Entries Into Our F80 M3 Sweepstakes
URO - Corporate Logo
T#:42436716
Part#: 11428583901
Ships in 2 Business Days
$ 52.99 USD
Free Shipping on orders $49 and up
Engine oil coolers are critical for keeping oil temperatures in check, preventing premature breakdown and maintaining proper lubrication. When oil gets too hot, it loses viscosity and can't effectively protect vital engine components like bearings—which can lead to serious, even catastrophic, failures. If your oil cooler is damaged or has failed, replacing it is essential to protect your engine and keep everything running smoothly.
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URO Turbocharger Cooling Supply Line - 11538663516
2X Entries Into Our F80 M3 Sweepstakes
URO - Corporate Logo
T#:28537510
Part#: 11538663516
Ships in 2 Business Days
$ 49.99 USD
Free Shipping on orders $49 and up

This hose assembly delivers coolant to the turbocharger, aiding in heat dissipation. Promptly replace any leaking coolant lines to prevent engine and turbocharger damage.

Key Features:

Ensured fitment for your vehicle Precision-formed to match the length and shape of OE turbocharger coolant lines, ensuring proper appearance and function Equipped with the correct end fittings for easy installation and leak-free performance Constructed using high-quality materials to withstand coolant exposure and turbo heat 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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Rein Turbo Cooling Line - Return
2X Entries Into Our F80 M3 Sweepstakes
Rein - Corporate Logo
T#:17771598
Part#: 11538663517
Ships in 2 Business Days
$ 86.99

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

$ 76.99 USD
Free Shipping on orders $49 and up
$ 76.99 USD
Free Shipping on orders $49 and up
Rein turbo hoses are manufactured with premium OE quality material to offer maximum protection from premature failures.
10,82x1,78 RD HNBR SH65
2X Entries Into Our F80 M3 Sweepstakes
Elring - Corporate Logo
T#:15015311
Part#: 17227581147
Ships in 2 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
O-ring for oil cooler

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.
URO Turbo Coolant Return Line - BMW Gen1 B58 3.0L
2X Entries Into Our F80 M3 Sweepstakes
URO - Corporate Logo
T#:53079363
Part#: 11538666857
In Stock
New Item
$ 65.99 USD
Free Shipping on orders $49 and up
Replacement coolant return hose running from the turbocharger to the auxiliary water pump.

URO Turbocharger Cooling Return Line - 11538853293
2X Entries Into Our F80 M3 Sweepstakes
URO - Corporate Logo
T#:28537511
Part#: 11538853293
Ships in 2 Business Days
$ 56.99 USD
Free Shipping on orders $49 and up

This hose assembly directs coolant away from the turbocharger, allowing cooler coolant from the radiator to flow through. Replace any leaking coolant lines promptly to prevent engine and turbocharger damage.

Key Features:

Ensured fitment for your vehicle Precision-formed to match the length and shape of OE turbocharger coolant lines, ensuring proper appearance and function Equipped with the correct end fittings for easy installation and leak-free performance Constructed using high-quality materials to withstand coolant exposure and turbo heat 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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Coolant Hose
2X Entries Into Our F80 M3 Sweepstakes
Rein - Corporate Logo
T#:57616346
Part#: 17128620944
Ships in 4 Business Days
New Item
$ 43.99 USD
Free Shipping on orders $49 and up
Keep your European powertrain running at optimal operating temperatures with a high-grade coolant hose replacement.
Nissens - Corporate Logo
T#:27905106
Part#: 11428583901
Ships in 2 Business Days
$ 106.99

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

$ 104.99 USD
Free Shipping on orders $49 and up
$ 104.99 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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Genuine BMW - Corporate Logo
T#:222898
Part#: 17118625434
Ships in 1-2 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
Free Shipping on orders $49 and up
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


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#:46032
Part#: 17117600539
Ships in 1-2 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 - Corporate Logo
T#:545336
Part#: 17128608773
Ships in 4 Business Days
$ 3.99 USD
Free Shipping on orders $49 and up
$ 3.99 USD
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Genuine BMW - Corporate Logo
T#:533848
Part#: 51748061293
Ships in 1-2 days
5% off MSRP $ 106.99

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

$ 101.99 USD
Free Shipping on orders $49 and up
5% off MSRP
$ 106.99

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

$ 101.99 USD
Free Shipping on orders $49 and up

Genuine BMW - Corporate Logo
T#:39599359
Part#: 11515A81BE9
Ships in 1-2 days
8% off MSRP $ 690.99

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

$ 632.99 USD
Free Shipping on orders $49 and up
8% off MSRP
$ 690.99

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

$ 632.99 USD
Free Shipping on orders $49 and up
The Water Pump plays a crucial role in the vehicle's cooling system, directly impacting performance and fuel efficiency. Designed to manage engine cooling, this water pump also supports turbo and transmission cooling, making it an essential component of the engine. BMW has engineered this smart electric water pump with increased output to meet the high cooling demands of the N20/N26 engines, which face additional stress due to the factory intercooler, tight engine bay, and heat from the turbochargers. Enhanced Cooling Performance: Ensures effective cooling of the engine, turbo, and transmission. Smart Electric Design: Features a dynamic electric pump with increased output compared to normally aspirated models. Engine Efficiency: Balances engine power output and cooling responsibilities for optimal performance. Fits Multiple Models: Compatible with 2012+ BMW F30 320i ​This water pump is a critical upgrade for maintaining engine health and performance.
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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#:48160261
Part#: 11518516204KT
Ships in 1-2 days
$ 455.99

This product was last offered at the strikethrough price on
06-08-2026

$ 443.99 USD
Free Shipping on orders $49 and up
$ 443.99 USD
Free Shipping on orders $49 and up
It is important that your coolant system is serviced at regular intervals to ensure a long life. Over time, coolant systems are exposed to high temperatures and repeated thermal cycling, which causes warping, cracking, and hardening of plastics and rubber components in the coolant system. This can lead to coolant leaks and overheating, which can result in extensive engine damage if not resolved in a timely manner. This Water Pump & Thermostat kit helps to address a few of the most problematic parts, replacing these items entirely to keep your cooling system running optimally and efficiently.
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Genuine BMW - Corporate Logo
T#:27372127
Part#: 11537642854KT3
Ships in 1-2 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#: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#:27372125
Part#: 11537642854KT
Ships in 1-2 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#:179887
Part#: 17517600544
Ships in 1-2 days
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

Hose Clamp
15,3-18,5
Genuine BMW - Corporate Logo
T#:57823
Part#: 32411131346
Ships in 1 day
$ 4.53 USD
Free Shipping on orders $49 and up
$ 4.53 USD
Free Shipping on orders $49 and up


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#:530372
Part#: 51748054231
Ships in 1-2 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
Saleri - Corporate Logo
T#:47439419
Part#: 11515A81BE9
Ships in 1-2 days
$ 551.99

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

$ 535.99 USD
Free Shipping on orders $49 and up
$ 535.99 USD
Free Shipping on orders $49 and up
Genuine BMW - Corporate Logo
T#:48160250
Part#: 11515A81BE9KT
Ships in 4 Business Days
$ 936.99 USD
Free Shipping on orders $49 and up
It is important that your coolant system is serviced at regular intervals to ensure a long life. Over time, coolant systems are exposed to high temperatures and repeated thermal cycling, which causes warping, cracking, and hardening of plastics and rubber components in the coolant system. This can lead to coolant leaks and overheating, which can result in extensive engine damage if not resolved in a timely manner. This Water Pump & Thermostat kit helps to address a few of the most problematic parts, replacing these items entirely to keep your cooling system running optimally and efficiently.
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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#:46421
Part#: 17127799184
Ships in 1-2 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#:46409643
Part#: 11515B51A33
Ships in 1-2 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#:191357
Part#: 13627797957
Ships in 1-2 days
9% off MSRP $ 66.99

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

$ 60.99 USD
Free Shipping on orders $49 and up
9% off MSRP
$ 66.99

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

$ 60.99 USD
Free Shipping on orders $49 and up


Genuine BMW Temperature Sensor, Coolant -
This item fits the following BMW Chassis:
F25 X3,F30,F31

Fits BMW Engines including:
N57N

Genuine BMW - Corporate Logo
T#:373868
Part#: 11537603514
Ships in 1-2 days
9% off MSRP $ 80.99

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

$ 73.99 USD
Free Shipping on orders $49 and up
9% off MSRP
$ 80.99

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

$ 73.99 USD
Free Shipping on orders $49 and up

Water pipes and coolant hoses 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.

Wear is easy to see on these rubber hoses. Bulges, cracking, splitting at connections, and the loss of flexibility are usually big indicators that they are reaching the ends of their lives. Replace them whenever this wear is identified.

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Genuine BMW - Corporate Logo
T#:618108
Part#: 64216931740
Ships in 1-2 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#:531249
Part#: 51748061294
Ships in 8 Business Days
5% off MSRP $ 106.99

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

$ 101.99 USD
Free Shipping on orders $49 and up
5% off MSRP
$ 106.99

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

$ 101.99 USD
Free Shipping on orders $49 and up
Victor Reinz - Corporate Logo
T#:388687
Part#: 11537545278
In Stock
$ 6.11 USD
Free Shipping on orders $49 and up
$ 6.11 USD
Free Shipping on orders $49 and up
Seals your cooling system
Victor Reinz - Corporate Logo
T#:580584
Part#: C32348
Ships in 2 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


Burgaflex - Corporate Logo
T#:57725187
Part#: 11537541992
Ships in 4 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.
Feed Line - F22, F30, F33, F36
For Manual Transmission Only
Genuine BMW - Corporate Logo
T#:36096
Part#: 11537598237
Ships in 1-2 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#:544479
Part#: 17128616817
Ships in 8 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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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#: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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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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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
Genuine BMW Heat Exchanger Coolant Hose - BMW F30 340 (up to 03/2016 ...
For models with a production date up to 03/2016 and with M Sport Pkg and M Sport Brakes
Genuine BMW - Corporate Logo
T#:27438854
Part#: 17128650841
Special Order: No Guaranteed ETA
6% off MSRP $ 94.99

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

$ 88.99 USD
Free Shipping on orders $49 and up
6% off MSRP
$ 94.99

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

$ 88.99 USD
Free Shipping on orders $49 and up
Eliminate coolant leaks with this Genuine BMW replacement
Coolant Expansion Tank
10X Entries Into Our F80 M3 Sweepstakes
Bremmen Parts - Corporate Logo
T#:45723154
Part#: 17137642158
In Stock
Sale - Save 25% $ 67.99

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

$ 50.99 USD
Free Shipping on orders $49 and up
Sale - Save 25%
$ 67.99

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

$ 50.99 USD
Free Shipping on orders $49 and up


Burgaflex - Corporate Logo
T#:57725190
Part#: 17127811129
Ships on Oct 21, 2026
New Item
$ 38.99 USD
Free Shipping on orders $49 and up
This Burgaflex coolant hose delivers standard-setting durability and exact-fit performance to ensure consistent engine temperatures.
Burgaflex - Corporate Logo
T#:57725188
Part#: 11538663516
Ships on Oct 21, 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.