Mercedes-AMG M157 / M278 / M133 High-Performance Auxiliary Radiator

An all-aluminium auxiliary radiator that replaces the plastic-and-alloy factory unit. The stock auxiliary coolers are the first thing to give up in traffic or on track, and once intake temperatures climb the ECU pulls timing — so the car simply stops making the power the tune is capable of. A direct fit using the factory mounts and lines.

• All-aluminium construction
• Direct fit to factory mounts
• Lower intake temperatures under sustained load
• Helps hold timing on a tuned car