MMX DCT Transmission Oil Cooler for BMW E9x M3

The MMX Performance DCT Transmission Oil Cooler is the ultimate solution for controlling transmission temperatures in the BMW E90, E92, and E93 M3 equipped with the M-DCT dual-clutch transmission. Whether you're supercharged, track-focused, or simply want peace of mind in daily driving, this cooler provides the reliability and performance your DCT needs.

Key Features:

• Superior Cooling Efficiency – Vastly outperforms the factory DCT cooler, ensuring stable gearbox oil temperatures under all conditions.
• Track & Street Proven – Ideal for demanding track days or stop-and-go city traffic—keeps your transmission cool when it matters most.
• Direct Fit Upgrade – Engineered as a direct-fit replacement for the factory DCT cooler—no permanent modifications required.
• Supports High-Powered Builds – A must-have for supercharged or heavily tuned E9x M3s where thermal load is significantly increased.
• OEM+ Quality – Built to match the durability and precision of factory parts, with enhanced thermal performance.

Why Upgrade?

The factory DCT transmission cooler on the E9x M3 often falls short under high heat or spirited driving. Elevated transmission temperatures can result in reduced shifting performance, early wear, or even thermal shutdown. The MMX DCT Oil Cooler solves this by:

• Maintaining optimal DCT fluid temps during aggressive driving or in hot climates
• Extending transmission life by reducing thermal stress
• Providing track-day-ready reliability for any level of build

• Free US shipping on orders over $250.
• Free pickup at our Dallas shop, usually ready within 24 hours.
• Unused parts can be returned within 30 days. Tunes, opened electronics, merch and installed parts are final sale.
• Want it installed? Book the install at thegbmotors.com.

Full details are on our shipping and returns page.