2011-2014 Duramax Leak Free 5/8" Transmission Cooler Repair Lines (75420)-Transmission Cooler Lines-Deviant Race Parts-75420-Dirty Diesel Customs

2011-2014 Duramax Leak Free 5/8" Transmission Cooler Repair Lines (75420)

Deviant Race Parts

Part Number: 75420
Sale price$429.00 CAD

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 Year Make Engine
GM 6.6L Cummins & Allison 1000 Transmission


If you own a 2011-2014 Duramax you probably know that the GM's OE transmission lines leave something to be desired, they're prone to leak and fail. Deviant saw an opening and engineered the Deviant Race Parts (DRP 75420) Leak Free 5/8" Transmission Cooler Repair Lines. These lines are industrial grade and are rated at 1500psi, and completely replace the OEM transmission lines and hardware. These transmission lines are so over-built that they can offer a lifetime warranty - you won't find that on a stock replacement.

Deviant Part Number: 75420

  • 1500psi rated Industrial Strength Hydraulic Lines
  • Includes All Necessary Hardware
  • Detailed Install Instructions
  • Easy Install
  • Mounts in OE location