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do88 BigPack Radiator and Oil Cooler Kit - BMW M3 (E90/E92/E93) DKG / DCT 2007-2013

do88 SKU: DOBBIG-M3-DCT
Price
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The BigPack gathers do88's complete cooling range for the S65 powered M3 into one package: the aluminium radiator, the racing engine oil cooler, the power steering oil cooler and the DKG/DCT gearbox oil cooler. The radiator is a dual core 2 row 41mm design with a 6.3mm multi-louvered fin, holding 11,193 cm³ against the OEM 9,795 cm³ and running coolant at 73°C instead of 79°C in do88 testing. The 10 row bar-and-plate engine oil cooler holds 5,247 cm³ against 3,105 cm³ with 7,728 cm² of active area, and dropped oil temperature from 103°C to 84°C. The 18 row gearbox oil cooler holds 2,208 cm³ against 696 cm³ and cut gearbox oil temperature from 90°C to 74°C, while the power steering cooler carries 200 ml against the OEM 100 ml. Every part is a drop-in fit on OEM lines, brackets and hoses with CNC machined connections.

Specifications

Type Complete cooling package (do88 BigPack): radiator, engine oil cooler, gearbox oil cooler and power steering oil cooler
Transmission DKG / DCT dual clutch
Radiator do88 WC-190, dual core 2 row 41mm with 6.3mm multi-louvered fin, 11,193 cm³ against OEM 9,795 cm³, 14 percent larger
Radiator Test Result 73°C coolant after the radiator, OEM 79°C
Engine Oil Cooler do88 OC-100, 10 row bar-and-plate, 5,247 cm³ against OEM 3,105 cm³, 7,728 cm² active area against 4,858 cm²
Engine Oil Cooler Test Result 84°C oil after the cooler, OEM 103°C
Gearbox Oil Cooler do88 OC-110, 18 row bar-and-plate, 2,208 cm³ against OEM 696 cm³, 3,456 cm² active area against 1,242 cm², 6.5 dl oil volume
Gearbox Oil Cooler Test Result 74°C oil after the cooler, OEM 90°C
Power Steering Cooler do88 OC-120, 1,562 cm³ against OEM 432 cm³, 578.5 cm² active area against 288 cm², 200 ml oil volume against 100 ml
Material Aluminium with CNC machined line connections and brackets
Installation Drop-in, works with OEM oil lines, brackets, hoses, air conditioning condenser and fan cover
Quantity 1 package
Part Number BIG-M3-DCT

This part fits:

Year Make Model Submodel
2007-2013 BMW M3 (E90) S65B40 / S65B44, DKG / DCT
2007-2013 BMW M3 (E92) S65B40 / S65B44, DKG / DCT
2007-2013 BMW M3 (E93) S65B40 / S65B44, DKG / DCT

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
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