Audi RS5 B9 Heat Exchanger


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MercRacing Heat Exchanger B9 RS5

At MercRacing, we are a team of passionate problem solvers. One of the challenges with forced induction is cooling. Superchargers and some turbocharged applications, like the Audi B9 RS5 require heat exchangers to keep your system cool. Unfortunately, the OEM heat exchanger is installed in a location that offers limited air flow. Enter, the MercRacing Heat Exchanger. A front mounted multi-pass dual core design that works in series with the OEM heat exchanger. The increased front-facing surface area maximizes heat dissipation while the additional coolant volume increases thermal dilution. After a year of rigorous testing on the dyno, dragstrip and circuit, we are confident our heat exchanger will provide lower IATs for longer durations with faster recovery. Combined with the MercRacing Air-to-Water Intercooler and Peirburg CW100-3 Upgraded Coolant Pump and you have the ultimate reliable cooling solution for the B9 RS5 on the market. Trust MercRacing to keep you racing cool.

  • Multi-pass dual-core design
  • Works in series with OEM heat exchanger
  • Large Increase in cooling capacity over OEM
  • Stay cooler longer
  • Faster recovery time
  • Rigorously track and drag tested

You can add our install convenience pack or do your own hoses and clamps.  See below for the install kit.


Install Info:


Patent Pending

Weight17 lbs
Dimensions28 × 19 × 4 in


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