The Fleece FPE-TL-L5P-1719 Heavy Duty Transmission Cooler Lines will replace the leaking transmission cooling lines for your 2017-2019 GM 6.6L Duramax L5P. Your old, leaking transmission lines will be replaced by these robust, flexible lines that flow better than the stock lines. For your Duramax truck, this kit is the most complete set of replacement lines available. Due to their larger diameter than standard these lines will boost overall flow and the heavy-duty hose wrap will provide protection against future failures.

• 5/8" Diameter Hose
• Burst Proof Hose Wrap
• Increased Diameter Over Stock Hose
• Note: Not for use on Cab and Chassis applications.

• (2) Large OD washers
• (6) 7/8'-14 O-ring to -10AN fittings
• (3) 5/8'' ID transmission lines with AN fittings
• Double hose clamps, locking cable ties, and fir tree cable clamps