High-performance all-aluminum radiator for the B5 Audi A4 1.8T and Volkswagen Passat GLS, built for street and track use on high-horsepower and motorsport builds. The 2-row 42mm dual-pass core uses 45 cooling tubes with CSF's exclusive B-Tube technology, which raises heat-transfer surface area about 15% over standard tubes for dual laminar flow and better cooling efficiency. It is fully TIG-welded aluminum with CNC-machined brackets and OEM-style inlet/outlet, mounting in the factory location as a true plug-and-play drop-in. This radiator fits manual-transmission applications only.
| Type | All-aluminum high-performance radiator |
| Core | 2-row, 42mm dual-pass (45 cooling tubes) |
| Fins | 6.5mm multi-louvered, B-Tube technology |
| Material | 100% aluminum, TIG-welded |
| Finish | Smooth satin |
| Fit | Plug-and-play, OEM location; manual transmission only |
| Warranty | 2-year limited warranty |
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1997-2001 | Audi | A4 | Base |
| 1999-2001 | Audi | A4 Quattro | Avant |
| 1997-2001 | Audi | A4 Quattro | Base |
| 1998-2001 | Volkswagen | Passat | GLS |
