Fleece Performance 01-05 GM Duramax 6.6L LB7/LLY Allison Transmission Cooler Lines

If you're dealing with leaky transmission cooler lines on your 2001-2004 Chevrolet Silverado 2500 HD or 3500, or your 2001-2004 GMC Sierra 2500 HD or 3500 equipped with the Duramax 6.6L LB7 or LLY engine and an Allison transmission, this kit from Fleece Performance is what you need. These heavy-duty, flexible lines are built to handle the demands of your truck and help you fix those annoying leaks for good.

This kit comes with everything you need to get the job done right the first time. You'll find the transmission lines themselves, along with all the necessary O-rings, zip ties, and washers required for a complete and secure installation. Fleece Performance is known for making well-built parts for Duramax trucks, and these cooler lines are no exception. They are designed to offer improved flow over stock, helping to keep your transmission running cooler and more efficiently.