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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 & 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
Free Shipping
$ 379.99 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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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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Burger Motorsports - Corporate Logo
T#:588633
Part#: OILVALVE-RED
Ships in 2 Business Days
$ 59.00 USD
Free Shipping
$ 59.00 USD
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This simple engine oil cooler valve from Burger Motorsports increases flow to your fender mounted engine oil/air heat exchanger resulting in lower engine oil temperatures and more consistent performance during heavy throttle. Less restrictive than the spring-loaded units. Installs in minutes and is fully reversible. CNC machined for a precise fit and anodized for protection. Made in the USA. Requires BMW's external sport engine oil cooler which is standard on most 2008+ models, optional on 2007 E9x models. FEATURES AND BENEFITS Easily lower engine oil temperature Stock oil cooler will work more efficient More consistent performance CNC Machined for a perfect fit Made in USA
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Dinan High Performance Heat Exchanger - F8x
Call In Or Chat For Best Price!
Dinan - Corporate Logo
T#:389998
Part#: D780-0001A
Ships in 5 Business Days
Sale - Save 10% $ 749.99

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

$ 674.96 USD
Free Shipping
Sale - Save 10%
$ 749.99

This product was last offered at the strikethrough price on
07-31-2026

$ 674.96 USD
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As you increase performance and drive more aggressively, it becomes more and more important to improve your car's ability to keep its various fluids cool.

MMX Performance - Corporate Logo
T#:5269482
Part#: MMR03-0502BL
Special Order: No Guaranteed ETA
$ 136.99 USD
Free Shipping
$ 136.99 USD
Free Shipping
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. *Note: After exposure to excessive heat over prolonged periods, overall finish fading can occur.
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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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VF Engineering - Corporate Logo
T#:378330
Part#: VFAOC-E9MKT
Ships on Sep 1, 2026
$ 1,692.99 USD
Free Shipping
$ 1,692.99 USD
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This oil cooler from VF Engineering is the perfect BMW oil cool for your M3. Produced by CSF for VF engineering, this cooler contains desely packed bars and plates for the greatest possible surface area for heat exchange. This oil cooler offers many benefits over stock, including 2 extra rows of even better cooling. In addition, this cooler is compatible with all modifications that the stock cooler is applicable such as a supercharger system.
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MMX Performance - Corporate Logo
T#:48608191
Part#: MMR03-0004
Ships in 5 Business Days
$ 40.00 USD
Free Shipping
$ 40.00 USD
Free Shipping

Dinan - Corporate Logo
T#:389600
Part#: E90N54-D570
Ships on Sep 10, 2026
Sale - Save 10% $ 2,049.99

This product was last offered at the strikethrough price on
07-31-2026

Starting at $ 1,844.96 USD
Free Shipping on orders $49 and up
Sale - Save 10%
$ 2,049.99

This product was last offered at the strikethrough price on
07-31-2026

Starting at $ 1,844.96 USD
Free Shipping on orders $49 and up

High oil temps are one of the triggers that causes the engine electronics to curtail boost, cut power, and possibly switch to limp mode. The stock oil system was not designed with enough cushion for running more boost. We have seen limp modes come from stock vehicles on the race track. To prevent limp modes and reduced performance, Dinan has developed this oil cooler kit with much more surface area than stock.

The Dinan oil cooler kit fits in the stock location behind the front spoiler on the passenger side of the car. This is an ideal location to maximize the ram air effect from the front bumper. New air ducts and vents into the wheel well help improve air flow. PTFE hoses with race-quality fittings and all hardware are included for install. Some Dinan oil cooler kits can even be used to upgrade cars that never came with an oil cooler. Once you see the Dinan oil cooler side-by-side with the factory cooler, you will understand why it's so much better. The Dinan cooler is bigger in every way - larger capacity, greater surface area, and more cooling tubes.

StockDinan
Total Oil Volume9.5oz19oz
Surface Area45sq/in67.5sq/in
# Cooling Tubes1023
Tube Length90 in.207 in
Tube Area112.5sq/in414 sq/in

For over 35 years, Dinan has been America's premier tuning company, pioneering advancements in BMW modification while retaining a focus on balanced performance that preserves the original character and driving feel that a BMW offers. When you install a Dinan part on your car, know that it's not only carefully developed and tested, but that Dinan stands behind it with a four year, 50,000-mile warranty. Dinan believes so fully in their “total package” approach that once your car has been fitted with enough of their parts, they celebrate your conversion from stock to Dinan with an exclusive trunk badge, displayed proudly by BMW enthusiasts everywhere. The oil cooler kit is worth 3 points towards your Dinan badge.

This item fits the following BMWs:
2007-2010 E90 BMW 335i 335xi - Sedan

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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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MMX Performance - Corporate Logo
T#:4538249
Part#: MMR17-0201
Special Order: No Guaranteed ETA
$ 770.99 USD
Free Shipping
$ 770.99 USD
Free Shipping
MMX's Performance Engine Oil cooler is a direct upgrade for the E9x M3 cooler. Perfect for upgraded vehicles such as those with superchargers or those simply needing a more reliable option over the OEM cooler. This upgraded cooler will help keep your engine oil temperatures in check be it on or off the track. Dimensions: Width 77cm Height 11.5cm Depth 6.5cm
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Dinan - Corporate Logo
T#:389596
Part#: E92N55-D570
Back Ordered
Sale - Save 10% $ 1,799.99

This product was last offered at the strikethrough price on
07-31-2026

Starting at $ 1,619.96 USD
Free Shipping on orders $49 and up
Sale - Save 10%
$ 1,799.99

This product was last offered at the strikethrough price on
07-31-2026

Starting at $ 1,619.96 USD
Free Shipping on orders $49 and up

High oil temps are one of the triggers that causes the engine electronics to curtail boost, cut power, and possibly switch to limp mode. The stock oil system was not designed with enough cushion for running more boost. We have seen limp modes come from stock vehicles on the race track. To prevent limp modes and reduced performance, Dinan has developed this oil cooler kit with much more surface area than stock.

The Dinan oil cooler kit fits in the stock location behind the front spoiler on the passenger side of the car. This is an ideal location to maximize the ram air effect from the front bumper. New air ducts and vents into the wheel well help improve air flow. PTFE hoses with race-quality fittings and all hardware are included for install. Some Dinan oil cooler kits can even be used to upgrade cars that never came with an oil cooler. Once you see the Dinan oil cooler side-by-side with the factory cooler, you will understand why it's so much better. The Dinan cooler is bigger in every way - larger capacity, greater surface area, and more cooling tubes.

StockDinan
Total Oil Volume9.5oz19oz
Surface Area45sq/in67.5sq/in
# Cooling Tubes1023
Tube Length90 in.207 in
Tube Area112.5sq/in414 sq/in

For over 35 years, Dinan has been America's premier tuning company, pioneering advancements in BMW modification while retaining a focus on balanced performance that preserves the original character and driving feel that a BMW offers. When you install a Dinan part on your car, know that it's not only carefully developed and tested, but that Dinan stands behind it with a four year, 50,000-mile warranty. Dinan believes so fully in their “total package” approach that once your car has been fitted with enough of their parts, they celebrate your conversion from stock to Dinan with an exclusive trunk badge, displayed proudly by BMW enthusiasts everywhere. The oil cooler kit is worth 3 points towards your Dinan badge.

This item fits the following BMWs:
2011-2013 E92 LCI BMW 335i 335xi - Coupe
2011-2013 E93 LCI BMW 335i - Convertible

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