MSW E46 Non-M Oil Cooler Kit (M54, M52)

The MSW Oil Cooler Kit for E46 Non-M cars uses only the highest grade components and is a complete solution for your oil cooling needs.  Oil coolers allow you to run the proper weight oil without worry.  Great for sprint races, and nearly mandatory for endurance racing.  Extend the life of your engine and improve its performance.

UPDATE: Our oil cooler kit now comes standard with our M12 to M14 banjo bolt adapter, which is also threaded for 1/8″ NPT sensors.

We’ve tried out numerous oil cooling solutions in our hunt for the best possible setup.  We even have one of the last remaining and no-longer-available BMW Motorsport oil filter housing.  What we’ve learned from years of racing the SpecE46 in the hot and humid South is that the S54/S50(euro) housing is the best solution for a clean and tidy package.

The MSW Oil Cooler Kit starts with a brand new S54 oil filter housing*.  Then we remove the stock oil cooler thermostat and install a diverter valve to allow for full flow of oil to the cooler.  We then add -10AN adapters to the housing to allow for easy installation of the cooler lines.  Finally we modify the power steering pump mounting points to increase the strength of the mounting solution.

Our kit comes with already assembled Aeroquip Startlite Nomex braided AN hose with Aeroquip anodized swivel hose ends.  Aeroquip’s Startlite Nomex hose is up to 45% lighter than stainless braided hose and much easier to work with and around.  We also wrap the hose in a flame proof outer wrap to prevent chaffing.  The cooler itself uses a high quality Setrab heat exchanger with rubber isolated mounting points.  You have your choice of two different sizes of coolers, depending on your needs.

Don’t worry about where to mount your power steering fluid reservoir, our kit includes a custom made bracket to locate the reservoir in the stock location.  This means you use the stock power steering hoses with no modification.  It also allows you to easily check and top off your steering fluid, unlike the S54’s normal location in a nearly impossible to reach spot.

Fits all E46 with M54B25, M54B30, and M52 engines.

The entire kit includes everything you need to install an oil cooler on your E46.

• S54 Oil Filter Housing
• Oil Filter Housing Gasket
• Diverter Valve (installed)
• M5X Vanos line adapter with 1/8″ NPT port
• Mahle Oil Filter Kit
• AN adapters
• AN hose assemblies
• Setrab Oil Cooler w/ Mounting Bracket
• PS Pump Aluminum Spacers
• PS Reservoir Relocation Bracket

Options:

• 2 sizes of Setrab heat exchangers available. The included 10 row cooler provides additional cooling benefit to engines that generally run at an acceptable oil temperature range (under 250).  The 15 row cooler is recommended for harsher environments or those engines that have oil temps currently over 260F.

*Occasionally we have used S54 oil filter housings in stock.  If you’d like to save a little money by running a used but functional housing, just contact us beforehand to inquire.