do88 BMW 135I / 335I N54/N55 (E8X/E9X) Front Mount Radiator

No more cracked plastic tanks, choose do88 today. This performance radiator is designed for an easy drop-in fitment, engineered to deliver the best cooling efficiency during tough conditions. Exclusively manufactured in aluminium with uninterrupted welds, it guarantees reliability and endurance when you really need it, eliminating the factory unit's well-documented plastic tank failure point.

The numbers: a 29% larger core volume than the factory unit (8616cm³ versus 6701cm³) and a 3% larger frontal surface area (2154cm² versus 2094cm²). A high-efficiency single tube core, 1-row, 40mm thick, uses a 5.0mm fin height multi-louvered design for genuinely improved heat rejection. The increased core volume improves cooling efficiency and lowers liquid temperature, developed through thorough, severe, and continuous testing. This radiator is immensely optimised to the available space for an easy drop-in fitment, the undoubted choice for the inspired enthusiast or race car driver demanding reliability at the limit.

Please select your transmission type at checkout: manual (WC-390) or automatic (WC-370). These are separate, non-interchangeable radiators.

Why Choose This Radiator

• 29% larger core volume than the factory unit
• 3% larger frontal surface area
• High-efficiency single tube core with 5.0mm fin height multi-louvered design
• 100% aluminium construction with uninterrupted welds, eliminates the OEM's plastic tank failure point
• Immensely optimised to the available space for an easy drop-in fitment
• Thoroughly and continuously tested during development

Compatibility

Manual transmission (WC-390):

• BMW E82/E88 135i/135is/1M (2007-2013, N54/N55)
• BMW E90/E91/E92/E93 335i/335xi/335is (2007-2013, N54/N55)
• BMW E89 Z4 sDrive35i/sDrive35is (2009-2016, N54)

Automatic transmission (WC-370):

• BMW E82/E88 135i/135is (2007-2013, N54/N55)
• BMW E90/E91/E92/E93 335i/335xi/335is (2007-2013, N54/N55)