Mishimoto 12-20 BMW M5 / M6 Performance Oil Cooler

The S63 twin-turbo V8 in your BMW M5 or M6 is a powerhouse, but it can run hot, especially under track conditions or aggressive driving. This Mishimoto performance oil cooler is built to handle those higher temperatures. It features precisely CNC-machined billet-aluminum end tanks, which are professionally TIG-welded to a robust bar-and-plate core. This construction is much stronger than stock stamped tanks and resists damage from road debris.

The 55mm-thick bar-and-plate core offers a significant increase in cooling capacity. It boasts a 24% larger core volume and a 40% increase in external fin surface area compared to the factory unit. This improved heat transfer helps keep your engine oil temperatures down, which is crucial for maintaining engine output and extending the life of your S63 engine. This cooler is designed as a complete bolt-on solution, including all necessary hardware and replacement O-rings for a straightforward installation.

Finished in a durable silver powder coat, this oil cooler not only resists corrosion but also adds a clean look to your engine bay. Whether your BMW sees track days or spirited back-road drives, this upgraded oil cooler is a smart way to ensure your engine performs at its best and stays protected. It fits a range of BMW models including the M5, M6, M8, and M850i from 2012-2025. Mishimoto backs this cooler with their signature Lifetime Warranty.