BMW Cooling System Parts & Accessories for BMW F80 M3 S55 3.0L

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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#:30761
Part#: 11117530262
Ships in 1-2 days
10% off MSRP $ 34.32

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$ 30.99 USD
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10% off MSRP
$ 34.32

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$ 30.99 USD
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Genuine BMW Cover Lid - 110X13
This item fits the following BMW Chassis:
E82 1M Coupe,E70 X5,E71 X6,E82,E83 X3,E85 Z4,E86 Z4,E89 Z4,E90,E92,E93,F01,F02,F06,F10,F12,F13,F15,F16,F22,F25 X3,F26 X4 X4,F30,F32,F33,F34,F36,F80 M3,F82 M4,F83

Fits BMW Engines including:
N51,N52,N52N,N54,N54T,N55,S55

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Genuine BMW - Corporate Logo
T#:198647
Part#: 11517846361
Ships in 1-2 days
9% off MSRP $ 385.99

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$ 352.99 USD
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9% off MSRP
$ 385.99

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

$ 352.99 USD
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This is the mechanical coolant pump that us driven by the engine.
Genuine BMW - Corporate Logo
T#:199269
Part#: 51748054117
Ships in 1-2 days
4% off MSRP $ 254.99

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$ 243.99 USD
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$ 254.99

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$ 243.99 USD
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Genuine BMW Air Ducts To Radiator - M3/M4
This item fits the following BMW Chassis:
F80,F82,F83


Genuine BMW - Corporate Logo
T#:200319
Part#: 17112284607
Ships in 1-2 days
9% off MSRP $ 702.99

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$ 642.99 USD
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9% off MSRP
$ 702.99

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$ 642.99 USD
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Genuine BMW Radiator -
This item fits the following BMW Chassis:
F80 M3,F82 M4,F83

Fits BMW Engines including:
S55


Genuine BMW - Corporate Logo
T#:199241
Part#: 51648055741
Ships in 1-2 days
5% off MSRP $ 105.99

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$ 100.99 USD
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5% off MSRP
$ 105.99

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$ 100.99 USD
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Genuine BMW Bracket, Aux. Radiator, Lower Left -
This item fits the following BMW Chassis:
F80 M3,F82 M4,F83

Genuine BMW - Corporate Logo
T#:206333
Part#: 11537848506
Ships in 1-2 days
6% off MSRP $ 148.99

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

$ 139.99 USD
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6% off MSRP
$ 148.99

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$ 139.99 USD
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This is the hose that runs from the water pump line to the turbochargers.

Genuine BMW - Corporate Logo
T#:199237
Part#: 51648055669
Ships in 1-2 days
6% off MSRP $ 157.99

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$ 147.99 USD
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$ 157.99

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$ 147.99 USD
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Vital part of your cars structural system Genuine BMW Support Left - This item fits the following BMW Chassis: F80 M3,F82 M4,F83
Genuine BMW - Corporate Logo
T#:207074
Part#: 17118620732
Ships in 1-2 days
4% off MSRP $ 46.99

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$ 44.99 USD
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4% off MSRP
$ 46.99

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$ 44.99 USD
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Genuine BMW Bracket For Module, Left -
This item fits the following BMW Chassis:
F22,F30,F31,F32,F33,F34,F36,F80 M3,F82 M4,F83,I01 i3,I12 i8

Fits BMW Engines including:
N20,N26,N55,S55

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Genuine BMW - Corporate Logo
T#:200324
Part#: 17117848788
Ships in 1-2 days
6% off MSRP $ 84.99

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$ 79.99 USD
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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
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Genuine BMW Module Carrier, Upper -
This item fits the following BMW Chassis:
F80 M3,F82 M4,F83

Fits BMW Engines including:
S55


Genuine BMW - Corporate Logo
T#:199240
Part#: 51648055672
Ships in 1-2 days
6% off MSRP $ 53.99

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

$ 50.99 USD
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6% off MSRP
$ 53.99

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$ 50.99 USD
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Genuine BMW Bracket, Aux. Radiator, Lower Right -
This item fits the following BMW Chassis:
F80 M3,F82 M4,F83

Genuine BMW - Corporate Logo
T#:200323
Part#: 17117848787
Ships in 1-2 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
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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
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Genuine BMW Module Mount, Right -
This item fits the following BMW Chassis:
F80 M3,F82 M4,F83

Fits BMW Engines including:
S55

Genuine BMW - Corporate Logo
T#:200325
Part#: 17117848789
Ships in 1-2 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
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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
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Genuine BMW Module Mount, Bottom -
This item fits the following BMW Chassis:
F80 M3,F82 M4,F83

Fits BMW Engines including:
S55



Genuine BMW - Corporate Logo
T#:199242
Part#: 51648055742
Ships in 1-2 days
5% off MSRP $ 105.99

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

$ 100.99 USD
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5% off MSRP
$ 105.99

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$ 100.99 USD
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Genuine BMW Bracket, Aux. Radiator, Lower Right -
This item fits the following BMW Chassis:
F80 M3,F82 M4,F83

Genuine BMW - Corporate Logo
T#:200338
Part#: 17132284601
Ships in 1-2 days
6% off MSRP $ 202.99

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

$ 190.99 USD
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6% off MSRP
$ 202.99

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$ 190.99 USD
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Genuine BMW Expansion Tank -
This item fits the following BMW Chassis:
F80 M3,F82 M4,F83

Fits BMW Engines including:
S55

Genuine BMW - Corporate Logo
T#:200318
Part#: 17112284604
Ships in 1-2 days
9% off MSRP $ 421.99

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

$ 385.99 USD
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9% off MSRP
$ 421.99

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

$ 385.99 USD
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Genuine BMW Auxiliary Radiator, Right -
This item fits the following BMW Chassis:
F80 M3,F82 M4,F83

Fits BMW Engines including:
S55


Genuine BMW - Corporate Logo
T#:200322
Part#: 17117848786
Ships in 1-2 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
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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
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Genuine BMW Module Mount, Left -
This item fits the following BMW Chassis:
F80 M3,F82 M4,F83

Fits BMW Engines including:
S55


Genuine BMW - Corporate Logo
T#:206379
Part#: 17222358290
Ships in 1-2 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
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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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Genuine BMW Engine Oil Cooler Pipe, Flow -
This item fits the following BMW Chassis:
F80 M3,F82 M4,F83

Fits BMW Engines including:
S55

Genuine BMW - Corporate Logo
T#:201027
Part#: 17112284608
Ships in 1-2 days
8% off MSRP $ 526.99

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

$ 482.99 USD
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8% off MSRP
$ 526.99

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

$ 482.99 USD
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Genuine BMW Radiator -
This item fits the following BMW Chassis:
F80 M3,F82 M4,F83,I12 i8

Fits BMW Engines including:
S55


Genuine BMW - Corporate Logo
T#:199239
Part#: 51648055671
Ships in 1-2 days
6% off MSRP $ 53.99

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

$ 50.99 USD
Only available at this price
Free Shipping on orders $49 and up
6% off MSRP
$ 53.99

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

$ 50.99 USD
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Genuine BMW Bracket, Aux. Radiator, Lower Left -
This item fits the following BMW Chassis:
F80 M3,F82 M4,F83

Genuine MINI - Corporate Logo
T#:28337931
Part#: 17135A1BD89
In Stock
26% off MSRP $ 34.99

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

$ 25.99 USD
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26% off MSRP
$ 34.99

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

$ 25.99 USD
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Genuine BMW - Corporate Logo
T#:200317
Part#: 17112284603
Ships in 1-2 days
9% off MSRP $ 421.99

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

$ 385.99 USD
Only available at this price
Free Shipping
9% off MSRP
$ 421.99

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

$ 385.99 USD
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Genuine BMW Auxiliary Radiator, Left -
This item fits the following BMW Chassis:
F80 M3,F82 M4,F83

Fits BMW Engines including:
S55


Genuine BMW - Corporate Logo
T#:3672371
Part#: 64119484254
Ships in 1-2 days
8% off MSRP $ 122.99

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

$ 112.99 USD
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8% off MSRP
$ 122.99

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

$ 112.99 USD
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Replace your old water pump before it fails, saving you hundreds or even thousands of dollars in potential repair bills.
Genuine BMW - Corporate Logo
T#:212921
Part#: 17117848791
Ships in 1-2 days
6% off MSRP $ 87.99

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

$ 82.99 USD
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6% off MSRP
$ 87.99

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

$ 82.99 USD
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Genuine BMW Genuine BMW Line, Low-Temperature Radiator- - 17117848791
This item fits the following BMW Chassis:
F80,F82,F83,

Fits BMW Engines including:
S55,

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Genuine BMW - Corporate Logo
T#:200321
Part#: 17112284887
Ships in 1-2 days
6% off MSRP $ 1,526.99

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

$ 1,433.99 USD
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6% off MSRP
$ 1,526.99

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

$ 1,433.99 USD
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Complete replacement fn assembly with the blade.


Genuine BMW - Corporate Logo
T#:206332
Part#: 11537848505
Ships in 1-2 days
4% off MSRP $ 112.99

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

$ 107.99 USD
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4% off MSRP
$ 112.99

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

$ 107.99 USD
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This is the hose that runs from the water pump to the turbocharger coolant pipe.
Genuine BMW - Corporate Logo
T#:206334
Part#: 11537848507
In Stock
4% off MSRP $ 219.99

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

$ 210.99 USD
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4% off MSRP
$ 219.99

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

$ 210.99 USD
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This is the hose that runs from the turbochargers back to the coolant pump.
Genuine BMW - Corporate Logo
T#:222761
Part#: 11518637953
Ships in 1-2 days
8% off MSRP $ 322.99

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

$ 295.99 USD
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8% off MSRP
$ 322.99

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

$ 295.99 USD
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This is the auxiliary pump that feeds the turbo system

Genuine BMW - Corporate Logo
T#:200326
Part#: 17117848790
Ships in 1-2 days
6% 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.

$ 29.99 USD
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6% 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.

$ 29.99 USD
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Genuine BMW Seal, Cooling Module

Genuine BMW - Corporate Logo
T#:200329
Part#: 17122284688
Ships in 1-2 days
6% off MSRP $ 109.99

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

$ 102.99 USD
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6% off MSRP
$ 109.99

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

$ 102.99 USD
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Hose from the auxiliary radiator in the wheel housing to the main Radiator.
Genuine BMW - Corporate Logo
T#:613575
Part#: 64116834917
In Stock
6% off MSRP $ 296.99

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

$ 278.99 USD
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6% off MSRP
$ 296.99

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

$ 278.99 USD
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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#:577527
Part#: 11517846361KT
Ships in 1-2 days
$ 505.99 USD
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$ 505.99 USD
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This is and BMW water pump and thermostat replacement kit with coolant. Everything you need to service the most vital components and prevent overheating.
Mosselman Turbosystems - Corporate Logo
T#:4621129
Part#: OTS55.T85
In Stock
$ 459.00 USD
Only available at this price
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$ 459.00 USD
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**** DOES NOT INCLUDE HARDWARE ****** The S55 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. The Thermostat is plug-and-play and made out of a solid block of high-grade aluminum at our own facility. It is equipped with a real thermostat, not an always open solution. The oil will still reach the operating temperature at the same time as a stock thermostat Features Include: 20°C/68F Lower Than Stock Rock Solid Housing - CNC machined housing. Real Thermostat - Equipped with a real thermostat, not an always open solution. For use in hot and cold climates Quick Installation - Takes only 30 minutes to install.
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Precision Raceworks - Corporate Logo
T#:38128032
Part#: 201-0394-SIL
Ships in 7 Business Days
$ 94.99 USD
Only available at this price
Free Shipping on orders $49 and up
$ 94.99 USD
Only available at this price
Free Shipping on orders $49 and up

BMW Silver 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 Silver Auxiliary Coolant Reservoir Cap, blending performance, reliability, and premium styling.

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Rein - Corporate Logo
T#:384807
Part#: 17117639021
In Stock
$ 16.99 USD
Only available at this price
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$ 16.99 USD
Only available at this price
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Cap for plastic expansion tank
Precision Raceworks - Corporate Logo
T#:38128029
Part#: 201-0394-BLU
Ships in 9 Business Days
$ 94.99 USD
Only available at this price
Free Shipping on orders $49 and up
$ 94.99 USD
Only available at this price
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 9 Business Days
$ 94.99 USD
Only available at this price
Free Shipping on orders $49 and up
$ 94.99 USD
Only available at this price
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#:47679259
Part#: 622-0291-SIL
Ships in 9 Business Days
New Item
$ 184.99 USD
Only available at this price
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$ 184.99 USD
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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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Precision Raceworks - Corporate Logo
T#:47679257
Part#: 622-0291-BLAK
Ships in 9 Business Days
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$ 184.99 USD
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$ 184.99 USD
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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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Goldenwrench Supply Co - Corporate Logo
T#:5691129
Part#: FXXCET-B
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$ 65.00 USD
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Give the plain plastic factory coolant caps an upgrade with the brand new BLACKLINE Performance Coolant Expansion Tank Cap Cover from Goldenwrench. Each cap is CNC formed from T6 Aluminum and anodized in a limited release race inspired blue color. All logos and decorations are finalized through a precision 3D milling process, machined into each cap for the ultimate premium finish. The BLACKLINE Performance Billet Coolant Expansion Tank Cap Cover will fit most BMW vehicles equipped with the N55, S55, S63, and S65 engine with the large coolant tank found in a variety of M vehicles(check your coolant cap ensuring that it is the same shape as seen in the product photos). Each kit comes with a Billet Coolant Expansion Tank Cap Cover, and an Installation Instruction Card. This is a not a full cap replacement. The Billet Cap Cover affixes to the top of your factory coolant cap installing easily in minutes.
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DO88 - Corporate Logo
T#:13891841
Part#: OC170
Ships on Sep 22, 2026
$ 672.99 USD
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$ 672.99 USD
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The OE oil cooler on the F8X M2C/M3/M4 is prone to debris damaging it leading to catastrophic oil leaks and other not-good scenarios. DO88 addressed this issue with an oil cooler upgrade that is sure to stand the test of time with its rigid, durable design also boasting some impressive performance figures like 20% larger frontal surface area, and 63% greater core volume, leaving you with not only a durable option but a high-performance option for your F8X BMW!
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DO88 - Corporate Logo
T#:13805538
Part#: WC350
Ships on Sep 22, 2026
$ 683.99 USD
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The team at DO88 has vigorously tested this radiator to deliver peak performance with the peace of mind of quality for your M2C or F8X M3/M4. They guarantee reliability and endurance in all situations to let your car breathe better than before! Boasting a 75% increase in core volume and a 48% larger frontal surface area, this upgrade is a no-brainer for petrol heads like us. Keeping core temperatures low eliminates the risk of heat soak leading to overheating giving you max performance at any given moment. no compromise has been made at DO88 leaving you with one of the best radiator options on the market!
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Bremmen Parts - Corporate Logo
T#:15511827
Part#: 11537502779
Ships on Sep 25, 2026
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$ 45.58 USD
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If your vehicle is experiencing cooling issues, chances are the thermostat is the cause. Common symptoms include prolonged warm-up at highway speeds from the thermostat being stuck open, or consistent overheating issues from the thermostat being stuck in the closed position. Either condition can result in poor performance, and potential damage to vital components in your vehicle.
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CSF - Corporate Logo
T#:598765
Part#: 8075V
In Stock
$ 699.00 USD
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If you are looking to track your BMW, we recommend upgrading your front mount heat exchanger with this upgrade from CSF! CSF heat exchangers offer larger cores with greater cooling capacity. They feature their exclusive "B-Tube" technology--lighter, thinner aluminum material carefully formed in a "B" and brazed over the seam to seal. The design is stronger and offers better cooling efficiency than traditional "O" shaped tubes.
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Turner Motorsport - Corporate Logo
T#:48332527
Part#: 008766LA01
In Stock
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06-14-2026

$ 267.74 USD
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Whether your S55-equipped BMW serves as a daily driver or track car, keeping temperatures cool is critical. While most enthusiasts focus on upgrading the radiator and water-to-air intercooler systems, the engine oil cooler is an overlooked yet critical component.

New for the F8X-generation M2, M3, and M4 is a low-slung, horizontally mounted oil cooler designed to harness underbody aerodynamics. By placing the cooler in a low-pressure zone, this design enhances airflow efficiency and achieves sustainable oil temperatures for stock and street-driven cars. However, the compact core is quickly overwhelmed on modified or track-driven vehicles. Its exposed mounting position also leaves it highly susceptible to impact damage, so a minor scrape or piece of road debris can mean a costly full replacement. If you’re already replacing your oil cooler, it’s the perfect time to upgrade!

Our engineering team set out to solve the shortcomings of the factory design by developing a larger, higher-capacity core that delivers measurable gains in thermal stability. With a 7% increase in core thickness over OEM, this upgraded unit enhances airflow through the cooler and helps maintain lower, more consistent oil temperatures under sustained load. Thanks to its robust bar-and-plate core, precision-formed sheet metal end tanks, and durable 5052 aluminum construction, it’s built to withstand the harsh realities of real-world performance driving.

Replaces OEM part numbers 17212284540 and 17214802333.

Features:

High-efficiency bar-and-plate core for superior heat dissipation Fully TIG-welded 5052 aluminum end tanks Retains OEM rubber mounting for vibration-isolated, factory-style fitment Black painted finish with laser-etched Turner logo Designed as a direct-fit replacement and upgrade for S55-equipped F8X vehicles Design:

7% thicker core (30mm vs 28mm) for increased thermal capacity 6.5% increase in finned area (104,000 mm² vs 97,650 mm²) for better cooling Compatible with the Turner Motorsport skid plate kit (ES#3448772, ES#3247792) for complete protection Product Development:

Our High Performance Aluminum Heat Exchanger was designed, engineered, tested, and quality inspected by our Research and Development team in our Wadsworth, Ohio, facility. We strive for the highest level of precision and quality through leading-edge product development technology, including FARO laser scanning for reverse engineering and quality inspection, SolidWorks 3D CAD modeling, rapid prototyping utilizing our in-house 3D printer, and rigorous long-term product testing.

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ECS - Corporate Logo
T#:33412932
Part#: 61132359999
In Stock
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$ 8.24 USD
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$ 10.99

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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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BMW Coolant / Antifreeze - 1.5L
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Febi - Corporate Logo
T#:16175674
Part#: 82141467704
Ships on Nov 30, 2026
$ 70.99 USD
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Coolant G11 (Concentrate). The right anti-freeze agent makes a key contribution towards the reliable functioning of the engine cooling system under all operating and weather conditions. Cooler anti-freeze agents from Febi are precisely matched to the special requirements of the vehicle manufacturer and offer reliable protection from damages caused by freezing, corrosion, and cavitation. A good functioning cooling system is a primary prerequisite for the optimum operation of the engine. The ideal mixing ratio is 1:1, which offers frost protection to -36° C. With a ratio of 1:1 of water and concentrate, the boiling point of the cooling is approximately 107° C.+ High protection against freezing, corrosion, and cavitation Prevention of deposits and foam formation
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Packaged by Turner - Corporate Logo
T#:30197967
Part#: 11517846361KT4
Ships on Jan 13, 2027
$ 479.99

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

$ 429.99 USD
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The water pump is a known weak point across all BMW models, requiring servicing every 60,000 miles. Along with the water pump, it’s wise to replace the thermostat to ensure your cooling system operates at peak efficiency.

This kit features a 90°C (194°F) thermostat from Hamburg Technic, which opens approximately 15°C earlier than the standard factory thermostat. This lower temperature is particularly advantageous for performance-focused applications.

What's Included:

Genuine BMW Mechanical Water Pump Assembly (11517846361) Hamburg Technic Performance Thermostat - 90°C/194°F (11537586885) Genuine BMW Coolant/Antifreeze - Diluted, 1 Gallon (82141467704) Benefits of a Lower Thermostat Temperature:

Enhanced Engine Cooling: Opens sooner to reduce engine temperature more effectively. Improved Performance: Keeps engine components cooler, allowing for better performance in high-stress conditions. Extended Engine Life: Reduces thermal stress on engine parts, promoting longevity. Prevents Overheating: Helps to avoid overheating in demanding driving scenarios. Optimized Fuel Efficiency: Maintains ideal engine temperature for efficient fuel combustion. Elevate your BMW's cooling system and performance with this expertly curated kit from Turner Motorsport.

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Meyle - Corporate Logo
T#:52797701
Part#: 3282280016
Special Order: No Guaranteed ETA
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This MEYLE thermostat ensures your engine stays at the perfect temperature for efficiency and power.


Vargas Turbo Technologies - Corporate Logo
T#:7530033
Part#: COOLANTCAPBLK
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$ 79.99 USD
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VTT is proud to offer their billet replacement for the factory plastic Coolant Reservoir cap. This cap does away with the weak plastic cap while adding some pop, and color to your engine bay. This coolant cap retains ALL of the factory provisions by simply allowing you to snap the factory pressure-relief into the new Billet Cap. VTT also designed these caps to complement their N5X Billet Oil caps, N5XBillet Oil filter housing caps, and Billet Power Steering cap, so all 4 will have the same design. These caps are offered in 4 colors – Red, Black, Blue, and Clear anodized Replaces Genuine BMW Reservoir Cap # 17117639020 Note: Fitment includes 99% of all BMW with a coolant Reservoir tank from the E series forward, meaning then fit even the brand New G8X M3/4 with the S58, all B58, etc. If your BMW is an E90 or newer this cap most likely will fit
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Nissens - Corporate Logo
T#:641060
Part#: 17112284608
Special Order: No Guaranteed ETA
$ 197.99 USD
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$ 197.99 USD
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This heat exchanger helps eliminates excess heat from the integrated intake intercooler, helping to keep charge-air temps low and improve performance. This radiator is made by Nissens, an original equipment supplier to BMW. The cooling system is a weak point on most BMWs, causing many BMWs to develop issues in as few as 50,000 miles. Prevent potential failure by replacing your radiator early, keeping your BMW happy and cool. 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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