The do88 performance radiator is an all-aluminium unit with uninterrupted welds for automatic-gearbox N54 and N55 BMWs. Its single-tube 1-row 40mm core with 5.0mm multi-louvered fins holds 8,616 cm3 of coolant, 29% more than the 6,701 cm3 OEM radiator, across a 2,154 cm2 frontal area. It fits Steptronic and DCT automatic cars only and is a direct replacement for OE part 17117547059.
Specifications
| Type | All-aluminium performance radiator |
| Core | Single-tube, 1-row, 40mm thick, 5.0mm multi-louvered fins |
| Transmission | Automatic only (Steptronic / DCT) |
| Part Number | WC-370 |
| OEM Replacement | 17117547059 |
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2007-2013 | BMW | 135i / 135is | E82 / E88 (N54/N55), Automatic |
| 2007-2013 | BMW | 335i / 335xi / 335is | E90 / E91 / E92 / E93 (N54/N55), Automatic |
| 2009-2016 | BMW | Z4 sDrive35i / sDrive35is | E89 (N54), Automatic |
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