Deviant Race Parts LEAK FREE Transmission Repair lines for 01-05 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. Features: 1/2" 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) LIFETIME WARRANTY