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75421 Deviant Transmission Cooler Lines - 5/8" Lines - GM 2015-2016

DRP's high quality, heavy duty OEM LEAKFREE transmission cooler line replacement kit for your 2015-2016 GMC/Chevy Duramax 6.6L with the LML engine.
Manufacturer: Deviant Race Parts
SKU: DRP75421

Product Details (click to expand)

Manufacturer Part#: 75421
UPC: 887753065902
Weight (lbs.): 9.65 lbs.
Dimensions 4.00" x 14.00" x 14.00"

Product Specifications (click to expand)

Product Type Transmission Cooler Lines
Line Size 5/8"
Transmission Type Allison A1000
Free shipping
$395.00 (CAD)

Deviant Race Parts LEAK FREE Transmission Repair lines for 2015-16 GM 6.6L Duramax equipped 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 WARRANTED, part that completely replace the OEM lines. With thousands sold, we can say we've solved the problem.


  • 1500psi rated 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)