Further Information
CSF's High-Performance All-Aluminum Radiator for the Audi B5 S4 combines over 5 decades of cooling expertise with purpose-built engineering for street and track applications. Designed for turbocharged performance, this radiator delivers exceptional heat rejection in demanding motorsports environments and high-horsepower builds.
Featuring CSF's exclusive B-Tube Technology with dual liquid laminar flow, this radiator achieves approximately 15% greater heat transfer surface area compared to conventional designs. The specially engineered B-shaped tubes are brazed over the seam for superior strength while using thinner, lighter aluminum material for optimal efficiency.
Key Features:
- 2-Row 42mm core with exclusive B-Tube Technology for enhanced heat transfer
- Ultra-efficient multi-louvered fins with 6.5mm fin height and precise alignment
- CNC machined quick-connect inlet/outlet connections matching OE specifications
- All-aluminum race-style drain plug with smooth satin finish
- True drop-in fit requiring no modifications to factory mounting points
- Accepts all OEM components including quick-connect hoses, AC condenser, and fan shroud
Includes:
- High-performance all-aluminum radiator core
- CNC machined mounting brackets and fittings
- OE-style connections compatible with factory hoses
Keep your turbocharged S4 running cool. CSF performance cooling for the B5 S4.