KBDP transmission cooler line kit for Chevy / GMC Duramax 6.6l LB7 LLY LBZ & LMM trucks with the 5 or 6 speed Allison automatic transmission.
Did you know the transmission cooler lines on your Duramax are prone to leaking? Fix the problem before it becomes a headache!
Heavy Duty hydraulic hoses prevent leaks
Cooler Transmission Temperatures
5/8" Hydraulic Hose Provides Maximum Flow
Hose rated @ 300 PSI Working & 1200 PSI Burst
*If you prefer, you can upgrade to 1500 PSI Working & 6000 PSI Burst rated hose.
Notice: Some radiators may require 20mm metric adapters. Often called setrab fittings.
Fits: 2001-2010 Chevy & GMC 2500 & 3500 applications with the 6.6l LB7 LLY LBZ & LMM Duramax diesel engine.
Note: Some early LB7’s have smaller 3/4”-16 threaded ports on the transmission. These fittings are not included unless requested at the time of ordering.
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