The CSF Audi / VW MQB Quadruple Pass DSG High-Performance Auxiliary Radiator delivers exceptional cooling efficiency for both street and track vehicles. With over 50 years of engineering experience, CSF designs this all-aluminum radiator to provide superior heat dissipation for high-horsepower builds and vehicles exposed to demanding motorsports environments.

This system uses a 2-row, 42mm core featuring CSF’s exclusive B-Tube Technology. Unlike conventional round “O”-type tubes, CSF’s B-tubes use a seam-brazed, internally reinforced structure that allows the use of thinner, lighter aluminum while significantly increasing strength. This design increases the heat-transfer surface area by approximately 15%, enabling dual liquid laminar flow for optimal cooling.

The core also incorporates ultra-efficient multi-louvered fins with a 6.5mm fin height, precisely engineered for maximum airflow and heat rejection. All brackets, fittings, and quick-connect inlet/outlet connections are CNC-machined for excellent durability and a perfect OE-style fit.

This radiator installs as a true drop-in replacement, requiring no modifications and accepting all OEM components including the fan shroud, condenser, mounting brackets, and quick-connect hoses. Finished in a sleek black coating, it delivers both performance and a high-end stealth appearance.

Key Features

• 2-Row 42mm dual-core design with CSF B-Tube Technology

• Ultra-efficient multi-louvered fin design with 6.5mm fin height

• CNC-machined quick-connect inlet/outlet connections

• CNC-machined brackets and fittings for precise OE-style fitment

• All-aluminum race-style drain plug

• Black high-end stealth finish

• True drop-in fit; no modifications required

VEHICLE FITMENT

2015–2020 Audi 8V A3 Quattro – Turbocharged 2.0L L4
2015–2020 Audi 8V S3 – Turbocharged 2.0L L4
2022–2025 Audi 8Y S3 – Turbocharged 2.0L L4
2016–2022 Audi Mk3 TT Quattro – Turbocharged 2.0L L4
2016–2022 Audi Mk3 TTS Quattro – Turbocharged 2.0L L4
2013–2017 Volkswagen Beetle R-Line – Turbocharged 2.0L L4
2015–2019 Volkswagen Mk7 Golf R – Turbocharged 2.0L L4
2022–2025 Volkswagen Mk8 Golf R – Turbocharged 2.0L L4
2013–2018 Volkswagen Mk7 Jetta GLI – Turbocharged 2.0L L4

This CSF auxiliary radiator is the ideal upgrade for any MQB platform owner seeking maximum cooling performance, long-term reliability, and true plug-and-play installation.