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Oil Cooler

Keeping your BMW's engine oil temperatures in check is extremely important. Temperature fluctuations in engine oil can lead to excessive wear and tear on critical internal components such as the pistons, turbos, rod bearings, main bearings, and more. Many BMWs come from the factory with a stock oil cooler, but these often are damaged from rocks, dirt, and other road debris and must be replaced to maintain reliability and consistent oil temperatures. For those looking to track their vehicle more than a handful of times a year, we recommend upgrading your oil cooler to an aftermarket alternative that allows for greater heat dissipation and increased oil reserves. This will help keep oil temps low even after extended track sessions, keeping you on the track longer and reducing downtime.

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Mosselman MSL Hardware - N54/N55/S55 w/ MSL Oil Thermostat Upgrade ...

T#:27338727

Part#: 030210011

In Stock

$ 26.99 USD

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$ 26.99 USD

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This hardware can be used in conjunction with your Mosselman MSL Oil Thermostat for added flair and durability.

Specifications:

Grade 5 Titanium Hex-Race head M8x25mm

Mosselman MSL Oil Thermostat Installation Kit

T#:26404801

Part#: 030210012

In Stock

$ 27.99 USD

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$ 27.99 USD

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Prevent costly oil leaks when installing a new MSL oil cooler from Mosselman. These high-quality rubber gaskets ensure your oil thermostat is sealed properly, guaranteeing peak performance and long service life.

Kit includes:

2x Oil Pressure Hose O-Ring 1x Oil Filter Housing Gasket

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CSF F80/F82/F83/F87C Engine Oil Cooler - S55

2X Entries Into Our F80 M3 Sweepstakes

T#:11007518

Part#: 8220

In Stock

$ 549.00 USD

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$ 549.00 USD

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Like the other cooling systems on the F8X, the factory oil cooler does a pretty good job in stock form. However, once you start adding a lot of power and pushing the car in aggressive driving conditions, the factory systems start to show its limitations. As more and more owners have pushed the limits of their S55, CSF saw the need and demand.

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CSF High Performance Engine Oil Cooler - BMW F1X M5 M6, F9X M5 M8 ...

2X Entries Into Our F80 M3 Sweepstakes

T#:38195402

Part#: 8317

In Stock

$ 719.00 USD

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$ 719.00 USD

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CSF has been at the forefront of pushing the performance limits of the S63 engine with its Twin Charge Air Coolers. Today, many M5, M6, and M8 models are exceeding 1000HP, but with greater power comes increased heat. As power levels rise, so do oil temperatures, with some owners experiencing temperatures surpassing 240°F (115°C) during intense track sessions. As these M cars continue to age and power thresholds are pushed further, factory cooling systems are struggling to keep up. To address this challenge, CSF partnered with Carbahn to develop a direct-fit solution for both platforms. Engineered to manage the extreme heat generated by Carbahn’s new S63 Stroker Kit, this oil cooler is designed for peak performance and reliability. But enhanced performance isn’t the only reason to upgrade. Many F1X and F9X owners have had to replace their oil coolers due to leaks and damage, primarily caused by their exposed mounting position—a problem worsened by lowered suspension setups. A stronger, more durable design was needed to resolve these issues. Whether your M5, M6, or M8 is a daily driver, weekend cruiser, or dedicated track machine, upgrading the oil cooler is a smart investment. Tuned S63s, especially those with upgraded turbos, produce significantly more heat, making efficient cooling even more critical. Excessive oil temperatures can quickly trigger limp mode and, in extreme cases, cause catastrophic engine failure. CSF’s new High-Performance Engine Oil Cooler isn’t just about optimizing performance—it’s a preventative upgrade that helps avoid costly repairs and extends your engine’s lifespan.

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BMW S54 Swap Race-Spec Oil Cooler - E36/E46

2X Entries Into Our F80 M3 Sweepstakes

T#:15180814

Part#: 8240

In Stock

$ 519.00 USD

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$ 519.00 USD

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The ONLY choice for your S54 swapped E36 or E46. The new CSF S54 Swap Race Spec Oil Cooler is shorter on the right hand side allowing owners to run the A/C lines in the OEM path. Even though the #8240 is slightly smaller than the #8032, you can expect similar performance levels as they both feature a dual pass design with 8 cooling rows and are the same turbulated heavy-duty bar/plate construction.

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CSF Race-Spec Oil Cooler - E60 M5, E63/E64 M6 S85

2X Entries Into Our F80 M3 Sweepstakes

T#:23947155

Part#: 8275

Ships in 3 Business Days

$ 579.00 USD

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$ 579.00 USD

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100% TIG welded aluminum construction, 13x14 bar and plate core, and 40% larger in than factory unit in overall size. This oil cooler was designed to keep your oil temps down to promote safer engine operation and longevity. No matter the application, this cooler is a perfect replacement and upgrade for your stock oil cooler system.

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CSF Euro-Spec High-Performance All-Aluminum Engine Oil Cooler - BMW E...

2X Entries Into Our F80 M3 Sweepstakes

T#:37048679

Part#: 8301

In Stock

$ 529.00 USD

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$ 529.00 USD

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The E36 Euro Spec Oil Cooler is exactly what it sounds like. E36 M3’s in Europe came equipped with an oil cooler that mounted under the radiator and was a popular upgrade for E36 owners in the US. Unfortunately, BMW discontinued the oil cooler and they have become harder and harder to find. BimmerWorld reached out to CSF to design a replacement unit that would fit exactly like the factory unit but perform even better. The original oil cooler used Tube and Fin construction. While this is acceptable for cooling performance, it is not a very robust design. CSF chose to go with a Bar and Plate construction to improve durability. While there is plenty of ground clearance, the cooler is low enough to see some potential abuse on the track. CSF wanted to offer that extra durability of a Bar and Plate cooler for track enthusiasts and those running their car on the lower side. The CSF Oil Cooler was designed to be a 1 to 1 replacement for the OEM unit in terms of fitment. This means it uses the same OE mounting points, hardware, and lines. For a Euro E36 M3 or US Z3M, the oil cooler will be a drop-in fit installation. E36 models that were not equipped with the oil cooler from the factory will need the BimmerWorld Euro Oil Cooler Bracket Kit which can attach to an OEM spec Radiator or the CSF #3054.

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Rein Aluminum Oil Filter Housing - BMW B58

2X Entries Into Our F80 M3 Sweepstakes

T#:49404665

Part#: 11428583901

In Stock

Sale - Save 5% $ 440.00

This product was last offered at the strikethrough price on
08-31-2026

$ 418.00 USD

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Sale - Save 5%

$ 440.00

This product was last offered at the strikethrough price on
08-31-2026

$ 418.00 USD

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For those who push their engines to the limit, "good enough" is a liability. Upgrade to the Rein HEU0116 Aluminum Oil Filter Housing—the professional’s choice for durability and peace of mind.

RACE-SPEC DUAL-PASS DCT COOLER

2X Entries Into Our F80 M3 Sweepstakes

T#:585580

Part#: 8103

Ships in 4 Business Days

$ 399.00 USD

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$ 399.00 USD

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1-row super-high pressure 26 mm multi-channel microtube. Dual-pass high performance core with 12 cooling tubes. High-density multi-louvered fin design. 40% increase in cooling efficiency.

BMW E46 M3 Oil Line -10 AN Adapter Fitting Kit

2X Entries Into Our F80 M3 Sweepstakes

T#:31158758

Part#: 8241

Ships in 4 Business Days

$ 89.00 USD

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$ 89.00 USD

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BMW Oil Line -10 AN Adapter Fitting Kit is designed for optimal performance with both oil cooler and thermostat housing setups. This comprehensive kit from Turner Motorsport provides everything needed for a secure and reliable connection.

Each fitting kit includes:

Qty. 2 - Aluminum -10 AN to ORB Fittings
Qty. 2 - O-Rings
Qty. 1 - Aluminum Fitting Bracket
Qty. 1 - M8 Mounting Bolt

Note: If using a -10 AN connection on the thermostat housing side, a second fitting kit is required.

Benefits:

Enhances connection reliability for oil cooler and thermostat housing
High-quality aluminum fittings ensure durability and performance
Includes all necessary components for easy installation
Compatible with CSF #8240 (BMW S54 Swap Race Spec Oil Cooler) and CSF #8032 (BMW E46 M3/S54 Race-Spec Oil Cooler)

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CSF Universal Large Single-Pass Oil Cooler - Universal Application ...

2X Entries Into Our F80 M3 Sweepstakes
Universal fitment design - modifications may be necessary to run this cooler

T#:53608839

Part#: 8371

Ships in 4 Business Days

$ 499.00 USD

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$ 499.00 USD

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CSF redesigned this cooler and went with a more traditional inlet/outlet orientation. The new single pass design features high efficiency and high durability, but with vertically oriented inlet and outlet connections.

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