Mishimoto Performance Auxiliary DSG Cooler / Heat Exchanger for Select Audi and VW 2014-2022 (MMRAD-MK7-15A)

Fits select 2014-2022 Audi S3, TT, TTS, and Volkswagen GTI and Golf R. The MQB platform is a formidable choice for street and track builds, but the shared cooling system—responsible for engine, transmission, and oil temperatures—often struggles with heat soak once power is increased. The Mishimoto Performance Auxiliary Heat Exchanger provides the thermal overhead required to maintain safe operating temperatures during aggressive driving.

This auxiliary cooler is engineered for maximum efficiency, featuring a 52% increase in core volume and a massive 106% increase in coolant capacity over the factory unit. The core utilizes a dual-pass design and louvered fins, which increase surface area by 68% to optimize heat transfer. For long-term durability, the core is constructed with strutted tubes to withstand vibration and includes a stainless-steel stone guard to protect the aluminum fins from road debris.

• Direct fit for MQB-platform auxiliary cooling positions
• 52% increase in core volume over stock heat exchanger
• 106% increase in coolant capacity for improved thermal management
• 68% increase in fin surface area with high-efficiency louvered fins
• Dual-pass design for optimized coolant flow
• Strutted tubes for superior core strength and durability
• Included stainless-steel stone guard protects against impact damage
• Mishimoto Lifetime Warranty
• Manufacturer Part Number: MMRAD-MK7-15A