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Oil Cooler

BMWs use an external oil cooler to regulate the temperature of engine oil and prevent a breakdown in viscosity and lubrication characteristics. If yours has suffered damage or developed a slight leak, make sure to replace it and keep the engine oil where it is supposed to be. Keeping this system properly serviced will significantly improve performance and increase engine life.
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N54/N55 Low Temp Oil Thermostat Kit - 70c
N54/N55 Low Temp Oil Thermostat Kit - 70c
10X Entries Into Our F80 M3 Sweepstakes
Packaged by Turner - Corporate Logo
T#:52621839
Part#: 008731KT1
In Stock
New Item
Sale - Save 23% $ 74.98

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

$ 57.74 USD
Free Shipping on orders $49 and up
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Sale - Save 23%
$ 74.98

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

$ 57.74 USD
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Upgrade your stock oil cooler thermostat for improved performance. Swap your factory 110-degree Celsius thermostat for a new 70-degree Celsius version for faster oil flow and extended temperature control. With oil temperatures reaching 230 degrees Fahrenheit by the time your factory thermostat opens, initiating oil flow at lower temperatures proves more effective than attempting to cool down already elevated temperatures.

Utilizing a factory-style thermostat, this upgrade can be used in all weather conditions and allows your engine to warm up properly, unlike thermostat bypass kits.

Kit contents:​

Lower temperature thermostat - 70c (158F) vs Factory 110c (230F)
Low temp thermostat spring

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N54 & E8x/E9x N55 Mosselman Billet Oil Thermostat
N54 & E8x/E9x N55 Mosselman Billet Oil Thermostat
For Gasket/Install kit see T#4799665
Mosselman Turbosystems - Corporate Logo
T#:4621131
Part#: OTN54.T85
In Stock
$ 379.99 USD
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$ 379.99 USD
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The N54 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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70c Low Temp Oil Thermostat Kit - N54/N55
70c Low Temp Oil Thermostat Kit - N54/N55
10X Entries Into Our F80 M3 Sweepstakes
Packaged by Turner - Corporate Logo
T#:30031507
Part#: N54N55LTKT1
Back Ordered
Sale - Save 18% $ 152.97

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

$ 125.58 USD
Free Shipping on orders $49 and up
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Sale - Save 18%
$ 152.97

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

$ 125.58 USD
Free Shipping on orders $49 and up
Add to Wish List

Upgrade your stock oil cooler thermostat for improved performance. Swap out your existing cover with ease, replacing it with a durable billet cover. Upgrade from your 110-degree Celsius thermostat to a new 70-degree Celsius version for faster oil flow and extended temperature control. With oil temperatures reaching 230 degrees Fahrenheit by the time your factory thermostat opens, initiating oil flow at lower temperatures proves more effective than attempting to cool down already elevated temperatures.

Utilizing a factory-style thermostat, this upgrade can be used in all weather conditions and allows your engine to warm up properly unlike thermostat bypass kits.

Kit contents:

Billet thermostat housing cover
Replacement gasket
Hardware
Lower temperature thermostat - 70c (158F) vs Factory 110c (230F)
Low temp thermostat spring

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HARD Motorsport BMW Oil Cooler Fitting Adapter Plate - E36 E46 E82 E9X
HARD Motorsport BMW Oil Cooler Fitting Adapter Plate - E36 E46 E82 E9...
HARD Motorsport - Corporate Logo
T#:593621
Part#: OILADPTR
Special Order: No Guaranteed ETA
$ 62.00 USD
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$ 62.00 USD
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The HARD Motorsport Oil Cooler Fitting Adaptor Plate allows you to upgrade your oil cooler lines to a flexible braided hose that can be routed in any direction, giving the ability to upgrade or relocate your oil cooler. This kit replaces the oil cooler hard lines with two -10 AN fittings, mounting bracket, O-rings, and adaptor bracket, which is CNC machined stainless steel.
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Oil Filter And Cooler Kit - E36
Oil Filter And Cooler Kit - E36
10X Entries Into Our F80 M3 Sweepstakes
Packaged by Turner - Corporate Logo
T#:56616386
Part#: E36OILCLRKT
Ships on Oct 28, 2026
New Item
$ 1,149.99 USD
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$ 1,149.99 USD
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We’ve curated the ultimate complete retrofit kit that adapts the legendary Euro S50 oil filter housing to your US spec M50, M52, S50, or S52 engine. Featuring an upgraded CSF Euro Spec all-aluminum oil cooler, custom mounting brackets, and all necessary OEM seals, lines, and conversion hardware
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Low-Temperature N54 Oil Thermostat Overhaul Kit
Low-Temperature N54 Oil Thermostat Overhaul Kit
10X Entries Into Our F80 M3 Sweepstakes
For 2008+ models only
Packaged by Turner - Corporate Logo
T#:26705034
Part#: 090743ECS09KT2
Back Ordered
Sale - Save 9% $ 249.99

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

$ 226.76 USD
Free Shipping on orders $49 and up
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Sale - Save 9%
$ 249.99

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

$ 226.76 USD
Free Shipping on orders $49 and up
Add to Wish List

Ensure optimal performance and longevity for your BMW N54 engine with this comprehensive upgrade kit assembled by enthusiasts at Turner Motorsport!

High-performance low-temp oil thermostat for superior cooling efficiency Anodized aluminum oil thermostat shaft ensures durability and surface protection Premium quality thermostat spring and bung for reliable operation Anodized thermostat cover with external fins maximizes cooling effectiveness Complete installation kit includes gasket and hardware for hassle-free setup Includes Liqui Moly Special-Tec LL 5W-30 oil, new oil filter, filter housing gasket, and drain plug for a complete service Elevate your N54's cooling system and maintain optimal oil temperatures between 194F and 230F with this all-inclusive upgrade kit.

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Low-Temperature N54 Oil Thermostat Overhaul Kit
Low-Temperature N54 Oil Thermostat Overhaul Kit
10X Entries Into Our F80 M3 Sweepstakes
For 2006-2007 models only
Packaged by Turner - Corporate Logo
T#:26705005
Part#: 090766ECS09KT2
Back Ordered
Sale - Save 9% $ 245.99

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

$ 223.36 USD
Free Shipping on orders $49 and up
Add to Wish List
Sale - Save 9%
$ 245.99

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

$ 223.36 USD
Free Shipping on orders $49 and up
Add to Wish List

Ensure optimal performance and longevity for your BMW N54 engine with this comprehensive upgrade kit assembled by enthusiasts at Turner Motorsport!

High-performance low-temp oil thermostat for superior cooling efficiency Anodized aluminum oil thermostat shaft ensures durability and surface protection Premium quality thermostat spring and bung for reliable operation Anodized thermostat cover with external fins maximizes cooling effectiveness Complete installation kit includes gasket and hardware for hassle-free setup Includes Liqui Moly Special-Tec LL 5W-30 oil, new oil filter, filter housing gasket, and drain plug for a complete service Elevate your N54's cooling system and maintain optimal oil temperatures between 194F and 230F with this all-inclusive upgrade kit.

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