do88 Aluminium Automatic Radiator - BMW 135i / 335i N54/N55 2007-2016

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

This part fits:

Shipping

• In-stock orders placed before 3 PM EST ship the same day — everything else ships within 24 hours.
• Standard, expedited, and overnight options at checkout.
• Oversized items ship by freight and take longer.
• Backordered items ship as soon as stock lands — contact us for lead times.
• International orders: prices do not include VAT, duties, or import fees. Your country charges these at import and they are the buyer’s responsibility.

Returns

• 30-day returns on new, uninstalled items in original packaging with all hardware.
• Standard returns: 8% restocking fee, buyer pays return shipping. Both waived if the item is defective or we made the error.
• Installed or used parts can’t be returned — confirm fitment before you install.
• Special orders and custom items are final sale.
• Email us for return authorization before shipping anything back.

Full details: Shipping Policy · Refund Policy