Mishimoto's performance aluminum radiator is a direct-fit upgrade for automatic-transmission BMW E46 non-M models (323i, 325i, 328i, 330i and Z4, 1999-2009), outlasting the weak stock plastic radiator. It uses a large two-row, 100 percent brazed aluminum core with polished end tanks for a 20 percent increase in coolant capacity, 18 percent more coolant surface area, and 41 percent more air surface area. The automatic version adds an auxiliary inlet port for the stock transmission cooler connection, and CNC inlets and outlets mate to the stock quick-disconnect hoses.
| Type | Performance aluminum radiator (TIG-welded) |
| Material | Aluminum |
| Core | Two-row, 100% brazed aluminum |
| Transmission Cooler | Auxiliary inlet port for stock automatic transmission cooler |
| Inlet / Outlet | CNC-machined quick-disconnect |
| Finish | Polished end tanks |
| Fit | Direct fit, automatic transmission |
| Part Number | MMRAD-E46-323A |
| Warranty | Mishimoto Lifetime Warranty |
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2000 | BMW | 323Ci | Base |
| 1999-2000 | BMW | 323i | Base |
| 1999 | BMW | 323is | Base |
| 2001-2006 | BMW | 325Ci | Base |
| 2001-2005 | BMW | 325i | Base |
| 2001-2005 | BMW | 325xi | Base |
| 2000 | BMW | 328Ci | Base |
| 1999-2000 | BMW | 328i | Base |
| 1999 | BMW | 328is | Base |
| 2001-2006 | 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 |
| 2006-2008 | BMW | Z4 | Coupe 3.0si |
| 2006-2008 | BMW | Z4 | M Coupe |
| 2006-2008 | BMW | Z4 | M Roadster |
| 2006-2008 | BMW | Z4 | Roadster 3.0i |
| 2006-2008 | BMW | Z4 | Roadster 3.0si |
| 2009 | BMW | Z4 | sDrive30i |
| 2009 | BMW | Z4 | sDrive35i |
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.
