Deviant 75420 5/8" Transmission Cooler Repair Lines For 2011-14 GM Duramax Pickups

$292.50 $325.00
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Deviant Race Parts Transmission Repair lines for 2011-14 GM 6.6L Duramax Pickups with the Allison 1000 Transmission.

GM's factory transmission lines leave something to be desired. DRP saw a need to build a high quality, LIFETIME WARRANTY, part that completely replace the OEM lines. With thousands sold, we can say we've solved the problem.


  • Industrial Strength Hydraulic Lines
  • All necessary fittings and adapters to bolt up to factory locations
  • Full, step by step, instructions
  • 2 out of 5 wrenches (1 wrench being easiest)

To download installation instructions click here.