A high-performance, all-aluminum radiator for the 1999-2005 BMW E46 3-Series (323i, 325i, 328i, 330i, including xi models) and the 2003-2005 Z4, built for high-horsepower street and track builds. It runs a 2-row 42mm core with CSF's exclusive B-Tube technology, which increases each tube's heat-transfer surface area by roughly 15% over conventional round tubes. Ultra-efficient 6.5mm multi-louvered fins maximize airflow, while CNC-machined brackets and quick-connect inlet/outlet fittings give a drop-in fit that accepts all OEM components. Finished in a smooth satin finish with an all-aluminum race-style drain plug.
| Type | High-performance all-aluminum radiator |
| Material | 100% aluminum |
| Core | 2-row, 42mm (Dual Core, B-Tube) |
| Fins | 6.5mm multi-louvered |
| Inlet / Outlet | CNC-machined quick-connect |
| Finish | Smooth satin |
| Included | All-aluminum race-style drain plug |
| Fit | Drop-in, no modifications |
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2000 | BMW | 323Ci | Base |
| 1999-2000 | BMW | 323i | Base |
| 2001-2005 | BMW | 325Ci | Base |
| 2001-2005 | BMW | 325i | Base |
| 2001-2005 | BMW | 325xi | Base |
| 2000 | BMW | 328Ci | Base |
| 1999-2000 | BMW | 328i | Base |
| 2001-2005 | BMW | 330Ci | Base |
| 2001-2005 | BMW | 330i | Base |
| 2001-2005 | BMW | 330xi | Base |
| 2003-2005 | BMW | Z4 | 2.5i |
| 2003-2005 | BMW | Z4 | 3.0i |
