2001-2002 5/8" Allison transmission cooler hose set #50100




Product Description

(RECOMMENDED FOR APPLICATIONS REQUIRING HIGHER FLOW THAN NORMAL. Examples: heavy towing, chipped ecu, larger turbo, propane injection, or modified transmission.)

This is a fix for the commonly leaking transmission cooler hoses for 2001-2002 Chevy, and GMC trucks equipped with the Allison 1000 transmission behind the 6.6 liter duramax, and 8.1l gas engine. These are made out of 5/8" id Gates hydraulic hose with Gates Megacrimp ends. These hoses will handle the pressure, and temperature that the factory hoses will not. Included is everything to make the conversion possible, except for the tools. I also included detailed instructions, which includes a list of required tools to perform the job properly.

Our 5/8" sets may lower transmission temperature up to 40 degrees, based on input from customers.


  • Manufactured by: Red's Auto Rehab


Overall Rating Star Rating
  • Star Rating
    By: Derek Hanscom November 15, 2011
    I had installed a few of these kits when I was working at a local GM dealer. They are better built than the factory lines in my opinion, and certainly a lot easier to install. When my father in law's D-max needed cooler lines, I knew right where to go. I would certainly recommend these lines to anyone who has a Allison transmission diesel or gas application.

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