Category Archives: BMW E46 M3 Oil Cooler Kit 2001-2006

Mishimoto BMW E46 M3 Direct-Fit Oil Cooler Kit, Part 5: Final Data Review

Interested in purchasing this E46 oil cooler? Check out our product page for more information!

Mishimoto BMW E46 M3 Oil Cooler Kit

Mishimoto E46 M3 Oil Cooler Kit The results are in and they are exactly what we expected! This cooler provided huge gains in cooling efficiency. Let’s take a look at the data we compiled. First up is the core volume comparison.
Core volume comparison
Core volume comparison
As you can see, the Mishimoto oil cooler provides a huge increase in total … Continue Reading ››

Mishimoto BMW E46 M3 Direct-Fit Oil Cooler Kit, Part 4: Cooler Installation and Data Collection

Interested in purchasing this E46 oil cooler? Check out our product page for more information!

Mishimoto BMW E46 M3 Oil Cooler Kit

Time to see if this cooler can make a significant impact on fluid temperatures. As before, we borrowed a test fit vehicle from the folks over at Open Road Tuning. Once we had the car on the lift, we removed the factory cooler lines and spliced our temperature sensors into the stock lines so we could collect inlet and outlet fluid temperatures.
Temperature sensors installed
Temperature sensors installed
[caption … Continue Reading ››

Mishimoto BMW E46 M3 Direct-Fit Oil Cooler Kit, Part 3: Cooler Comparison and Adapter Installation

Interested in purchasing this E46 oil cooler? Check out our product page for more information!

Mishimoto BMW E46 M3 Oil Cooler Kit

Welcome to our third installment of the build! We are nearing the completion of this project, with only some final test fitting necessary and data collection to ensure that this product performs to our standards. First, take a look at the Mishimoto oil cooler compared to the stock unit. Mishimoto prototype oil cooler (right) and stock oil cooler (left) Mishimoto prototype oil cooler (right) and stock oil cooler … Continue Reading ››

Mishimoto BMW E46 M3 Direct-Fit Oil Cooler Kit, Part 2: Cooler Design and Prototyping

Interested in purchasing this E46 oil cooler? Check out our product page for more information!

Mishimoto BMW E46 M3 Oil Cooler Kit

Our team now had a functioning oil line adapter to convert from the stock oil filter housing to –AN fittings. Now we would be able to move forward with designing the actual heat exchanger for our kit. We reached out to a few of our local friends and sourced this Oxford green example!
Test vehicle on lift
Test vehicle on lift
Our friend Andrew at Open Road Tuning was … Continue Reading ››

Mishimoto BMW E46 M3 Direct-Fit Oil Cooler Kit, Part 1: Product Introduction and Component Prototyping

Interested in purchasing this E46 oil cooler? Check out our product page for more information!

Mishimoto BMW E46 M3 Oil Cooler Kit

The BMW S54 won the “International Engine of the Year” award at its inception in 2001 and was consistently on “Ward’s 10 Best Engines” list for four years. It’s hard to argue against the E46, an 8,000 rpm, 3.2L straight-6 producing over 330 hp and 260 ft-lb of torque, with a competent chassis, an exhaust note that straightens the neck hair of all within earshot, and a body styling that is unmatched in uniqueness. Although my opinion is slightly … Continue Reading ››