Mishimoto BMW F8X M3/M4 DCT Transmission Cooler 2015-2020

The Mishimoto transmission cooler for the 2015-2020 BMW F8X M2 Competition, M3, and M4 keeps the dual-clutch transmission (DCT) cool on the street and track, where extreme heat can otherwise hold the car back. Built from the ground up, it uses a new 1.25-inch-thick dual-pass core with internal fins for a 42% increase in core volume and 69% greater external fin surface area, improving heat rejection and DCT temperature regulation. Finished in silver powder coat.

Specifications

This part fits:

Shipping

• In-stock orders placed before 3 PM EST ship the same day — everything else ships within 24 hours.
• Standard, expedited, and overnight options at checkout.
• Oversized items ship by freight and take longer.
• Backordered items ship as soon as stock lands — contact us for lead times.
• International orders: prices do not include VAT, duties, or import fees. Your country charges these at import and they are the buyer’s responsibility.

Returns

• 30-day returns on new, uninstalled items in original packaging with all hardware.
• Standard returns: 8% restocking fee, buyer pays return shipping. Both waived if the item is defective or we made the error.
• Installed or used parts can’t be returned — confirm fitment before you install.
• Special orders and custom items are final sale.
• Email us for return authorization before shipping anything back.

Full details: Shipping Policy · Refund Policy