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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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Turner Motorsport - Corporate Logo
T#:28979318
Part#: 008731LA01KT
Ships on Sep 1, 2026
Sale - Save 25% $ 343.99

This product was last offered at the strikethrough price on
06-14-2026

$ 257.99 USD
Free Shipping on orders $49 and up
Sale - Save 25%
$ 343.99

This product was last offered at the strikethrough price on
06-14-2026

$ 257.99 USD
Free Shipping on orders $49 and up

The N54/N55 are the powerhouses of BMW, one of the most common tuning platforms, and a fan favorite for spirited driving. Being an N54/N55 owner you know that oil temps can get out of hand leaving you with an anxious feeling and the needle a little too close to the red on your gauge cluster. What if you could get the oil flowing faster, maintain lower temperatures, and still have proper engine warm-up?

Upgrade your N54/N55 engine with our Billet oil cooler housing, replacing the underperforming factory-cast aluminum unit. Engineered for enhanced performance and a blended aesthetic, our Turner oil cooler housing features an OEM+ black anodized finish and our own engineered lower-temperature thermostat. Unlike makeshift solutions like thermostat bypass kits, our housing integrates an OE thermostat, ensuring a gradual yet expedited engine warm-up process, similar to factory settings but faster.

Out goes the factory 110-degree Celsius (230F) thermostat, replaced by our 70-degree Celsius (158F) counterpart. This new thermostat triggers oil flow a significant 72 degrees Fahrenheit earlier than the factory version. This early flow translates into prolonged lower oil temperatures for both the oil cooler and engine, maintaining a happier, healthier engine with consistently lower operating temperatures.

For N54 owners seeking to use the full potential of their tuned or modified engines, our upgraded housing and thermostat are must-have additions, especially for those who frequent the track or enjoy spirited drives on winding roads. Even if you're not pushing your motor to its limits, this upgrade significantly enhances reliability. With rising oil temperatures, the risk of oil breakdown rises, resulting in compromised lubrication, more engine deposits, and increased wear over time. Our solution addresses these concerns, protecting your engine's longevity and performance, regardless of your driving style.

For vehicles equipped with the factory oil cooler, our housing offers a multitude of advantages and is a direct replacement for the OEM unit. If your vehicle lacks a factory oil cooler, this presents an ideal chance to upgrade your setup with our housing, enabling the addition of a factory cooler for enhanced performance and increased reliability. Our primary objective is to maintain optimal oil temperatures, ensuring proper lubrication for the engine's internal components, in turn prolonging their lifespan.

Features:

Thermostat - 40 degrees Celsius/ 72 degrees Fahrenheit lower than the factory unit Billet aluminum to replace the raw cast aluminum factory housing Optional cooler capability for cars without an OEM oil cooler Utilizes the lower temp thermostat to circulate oil sooner rather than an always open solution which inhibits warm-up Combine with OEM oil cooler to add cooling capacity to your FBO N54/N55 or replace the stock housing for a cooling upgrade using your existing cooler Replaceable thermostat and gaskets for easy maintenance Quick easy installation Kit Contents:

N54/N55 Billet Thermostat Housing Billet thermostat cover Low-temp thermostat Thermostat spring Housing and thermostat cover gaskets 2 Oil cooler line O-rings (17222245358) Product Development:

Our upgraded oil cooler housing was designed, engineered, tested, and quality inspected by our Research and Development team at Turner. Nothing but 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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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
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

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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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
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

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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MMX Performance - Corporate Logo
T#:4565826
Part#: MMR17-0101
Back Ordered
$ 70.99 USD
Free Shipping on orders $49 and up
MMR's Low Temp Oil Thermostat is one of the easiest ways to increase your oil cooling capability. Rated to maintain the oil temps at about 194F (90c) to 230F (110c). Machined from aircraft grade T-6061 aluminum and anodized in MMR's trademark finish for durability. Installation is easy as it fits right into the OEM oil thermostat housing on the N54 and N55. Highly recommended for cars used on the track or with a higher power and torque output than stock.
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Genuine MINI - Corporate Logo
T#:46174
Part#: 17127518502
In Stock
6% off MSRP $ 48.14

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

$ 45.40 USD
Free Shipping on orders $49 and up
6% off MSRP
$ 48.14

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

$ 45.40 USD
Free Shipping on orders $49 and up
Genuine MINI COOLANT HOSE
Fits BMW Engines including:
W11

Genuine MINI - Corporate Logo
T#:46173
Part#: 17127518501
In Stock
1% off MSRP $ 40.77

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

$ 40.27 USD
Free Shipping on orders $49 and up
1% off MSRP
$ 40.77

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

$ 40.27 USD
Free Shipping on orders $49 and up
Genuine MINI COOLANT HOSE
Fits BMW Engines including:
W11


MMX Performance - Corporate Logo
T#:4552049
Part#: MMR03-0502-KP
Special Order: No Guaranteed ETA
$ 21.99 USD
Free Shipping on orders $49 and up
The MMX Performance billet adaptor is a helpful addition for those wishing to run an auxiliary oil pressure or oil temperature gauge. The adaptor replaces the plug that can be found on the oil cooler thermostat assembly with a 1/8NPT gauge adaptor.
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MMX Performance - Corporate Logo
T#:5269476
Part#: MMR03-0502KBL
Special Order: No Guaranteed ETA
$ 25.99 USD
Free Shipping on orders $49 and up
The MMX Performance billet adaptor is a helpful addition for those wishing to run an auxiliary oil pressure or oil temperature gauge. The adaptor replaces the plug that can be found on the oil cooler thermostat assembly with a 1/8NPT gauge adaptor.
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MMX Performance - Corporate Logo
T#:5269479
Part#: MMR03-0502GBL
Special Order: No Guaranteed ETA
$ 111.99 USD
Free Shipping on orders $49 and up
This dress-up kit offers a high-quality aesthetic update to the OE thermostat cover. Thermostat dress up kit for the BMW N55, N54, and S55 engines manufactured from T6061 billet aluminum. Installation is extremely easy and dresses up the engine bay nicely. Includes billet adaptor which is a helpful addition for those wishing to run an auxiliary oil pressure or oil temperature gauge. The adaptor replaces the plug that can be found on the oil cooler thermostat assembly with a 1/8NPT gauge adaptor. *Note: After exposure to excessive heat over prolonged periods, overall finish fading can occur.
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Packaged by Turner - Corporate Logo
T#:26705005
Part#: 090766ECS09KT2
Back Ordered
Sale - Save 8% $ 245.99

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

$ 226.62 USD
Free Shipping on orders $49 and up
Sale - Save 8%
$ 245.99

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

$ 226.62 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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Packaged by Turner - Corporate Logo
T#:26705034
Part#: 090743ECS09KT2
Back Ordered
Sale - Save 8% $ 249.99

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

$ 230.02 USD
Free Shipping on orders $49 and up
Sale - Save 8%
$ 249.99

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

$ 230.02 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