MAD S55 Competition Top Mount Cooler
NOT LEGAL FOR SALE OR USE IN CALIFORNIA. This part has not been exempted by the California Air Resources Board and has no CARB Executive Order. It may not be sold for, installed on, or used on any vehicle registered or operated in California. We do not ship it to California addresses or offer it for local pickup.
Free shipping within the lower 48 states.
International orders: we do not ship this brand outside the US and Canada through checkout. Contact us for a shipping quote before ordering.
The factory top mount charge cooler is the weak link in the S55 cooling system, and it fails in two ways. It heat soaks quickly, so the car pulls timing and goes flat after a couple of hard pulls, and the OEM unit is known for developing leaks as it ages, which at best costs you power and at worst puts coolant somewhere it should not be. MAD's replacement addresses both at once.
The core is bar and plate aluminum with a high fin density, physically larger than the factory piece, so there is more thermal mass and more surface area sitting in the same space. Practical result is lower intake air temps, temps that recover faster between pulls, and consistent power on the third and fourth run instead of just the first. On an S55 running higher boost, charge cooling is usually what caps power, so this is one of the few parts that lets the car make it consistently.
Construction is the other half of the value. Bar and plate is a far more durable design than the OEM assembly, which means you are replacing a known failure point with something built to outlast it rather than waiting for the next leak.
Fits the 2015 to 2019 F80 M3 and F82 and F83 M4, and the 2018 and newer F87 M2 Competition, all with the S55 engine. It is a direct bolt on that uses the factory coolant lines, pump, and mounting locations, installable with basic hand tools and no cutting, drilling, or modification. No tune is required, and the cooler supports well beyond stock power. Finish is gloss black. MAD part number MAD-026.
FITMENT
- F80 M3
- F82 / F83 M4
- F87 M2C
