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 |
Shipping: In-stock orders placed before 3 PM EST ship the same day, and everything else ships within 24 hours. Standard, expedited, and overnight options are available at checkout. Backordered items ship as soon as we get them back in stock. Contact us for lead times. See the full Shipping Policy.
Returns: 30-day returns on new, unused items in original packaging. See the full Refund Policy.
