Oil Cooler for BMW 5 Series E60 (2004-2010)

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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 & E8x/E9x N55 Mosselman Billet Oil Thermostat
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For Gasket/Install kit see T#4799665
Mosselman Turbosystems - Corporate Logo
T#:4621131
Part#: OTN54.T85
In Stock
$ 379.00 USD
Free Shipping
$ 379.00 USD
Free Shipping
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
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Packaged by Turner - Corporate Logo
T#:30031507
Part#: N54N55LTKT1
Back Ordered
Sale - Save 20% $ 152.97

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

$ 122.38 USD
Free Shipping on orders $49 and up
Sale - Save 20%
$ 152.97

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

$ 122.38 USD
Free Shipping on orders $49 and up

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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N54/N55 Low Temp Oil Thermostat Kit - 70c
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Packaged by Turner - Corporate Logo
T#:52621839
Part#: 008731KT1
In Stock
New Item
Sale - Save 25% $ 74.98

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

$ 56.24 USD
Free Shipping on orders $49 and up
Sale - Save 25%
$ 74.98

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

$ 56.24 USD
Free Shipping on orders $49 and up

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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Low-Temperature N54 Oil Thermostat Overhaul Kit
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For 2006-2007 models only
Packaged by Turner - Corporate Logo
T#:26705005
Part#: 090766ECS09KT2
Back Ordered
Sale - Save 14% $ 245.99

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

$ 211.04 USD
Free Shipping on orders $49 and up
Sale - Save 14%
$ 245.99

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

$ 211.04 USD
Free Shipping on orders $49 and up

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
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For 2008+ models only
Packaged by Turner - Corporate Logo
T#:26705034
Part#: 090743ECS09KT2
Back Ordered
Sale - Save 14% $ 249.99

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

$ 214.44 USD
Free Shipping on orders $49 and up
Sale - Save 14%
$ 249.99

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

$ 214.44 USD
Free Shipping on orders $49 and up

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.

Show More Show Less