The Mishimoto auxiliary heat exchanger is designed for 2015+ VW Golf R (MK7) and 2013+ Audi 8V S3 MQB-platform vehicles to upgrade the stock auxiliary heat exchanger or DSG cooler. It increases core volume by 52% and coolant capacity by 106% over stock, uses louvered fins and a dual-pass core for efficient cooling, includes a stainless-steel stone guard, and is backed by Mishimoto's lifetime warranty.
Mishimoto 2015+ VW Golf-R MK7/2013+ Audi 8V S3 Performance Auxiliary DSG Cooler/Heat Exchanger