SKU: FLCFPE-TL-LB7-LLY

5/8 Allison Transmission Cooler Lines

5 in stock and ready for shipping
Confirm fitment before purchasing
YEARS
2001-2005
MAKE / MODEL
GM/Chevrolet/GMC / Silverado/Sierra
SERIES
2500HD/3500HD
ENGINE
6.6L Duramax LB7/6.6L Duramax LLY
Sale price
$289.99
Regular price
$304.49
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PRODUCT DETAIL

Key Features & Description

GM Duramax Fleece 5/8" Allison Transmission Cooler Lines Features:

  • Strengthened hydraulic cooler lines
  • All necessary fittings and adapters included
  • Bolts to factory locations
  • Engineered to never leak or rupture
  • Full, step by step instructions provided
  • Backed by a 1-Year Limited Warranty

Exceptional Radiator and Transmission Cooling Over Stock

Faulty cooler lines can cause lots of trouble for your transmission, from transmission fluid loss, high internal temperatures, and more that can be easily prevented. If you're still running on the factory lines, you may experience these problems sooner rather than later. To prevent these catastrophes, upgrade to a stronger counterpart with the Fleece Allison Transmission Cooler Lines for your 2001-2005 GM 6.6L Duramax equipped truck. This are direct replacement cooler lines that are engineered to both outlast and outperform your OEM components. Fleece engineered these lines to ensure they'll never leak or rupture, giving you more peace of mind the next time you push your truck to the limit.

Direct Bolt-On Installation

The Fleece 5/8" Allison Transmission Cooler Repair Lines take things to the next level by offering up impressive strength and functionality for every future adventure you and your rig plan on taking. This comprehensive kit includes all the necessary fittings and adapters, ensuring a hassle-free installation process.Ā  The lines bolt directly to your truck's existing factory locations making the mounting task as simple and straightforward as possible. What's more, a step-by-step instruction manual guides you through the process, so you can get back to doing what you really love in a matter of no time. To top it off, Fleece backs this kit with a 1-Year Warranty, providing you with peace of mind and protecting your investment for the long haul.

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Vehicle Fitment:

  • 2001 GM Silverado/Sierra 2500/3500 6.6L LB7 Duramax
  • 2002 GM Silverado/Sierra 2500/3500 6.6L LB7 Duramax
  • 2003 GM Silverado/Sierra 2500/3500 6.6L LB7 Duramax
  • 2004 GM Silverado/Sierra 2500/3500 6.6L LB7 Duramax
  • 2004.5 GM Silverado/Sierra 2500/3500 6.6L LLY Duramax
  • 2005 GM Silverado/Sierra 2500/3500 6.6L LLY Duramax

FITMENT GUIDE

Exact Fitment — Verify Your Year

Year RangesYears
Make
Model
Series
Engine
2001-2005
GM/Chevrolet/GMC
Silverado/Sierra
2500HD/3500HD
6.6L Duramax LB7/6.6L Duramax LLY

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