Fleece Performance · New
Fleece Performance 11-14 GM Duramax 2500/3500 Heavy Duty Trans Cooler Lines
MPN FPE-TL-LML-1114 · Store SKU fpeFPE-TL-LML-1114
Supplier stock checked 11/7/2026, 1:45:46 PM UTC. Adding a part does not reserve it.
Request a return within 30 calendar days after delivery. New parts must be unopened and unused.
Shipping & returns ↗This policy does not limit rights required by law.Free standard shipping on eligible parts orders of $100 or more. Oversized and freight items excluded. Fitment, taxes, availability and final totals are confirmed before payment.
Product details
Replace your leaking transmission lines with our heavy duty, high flow, flexible transmission lines. Our kit is the most complete replacement transmission line kit available for your LML truck! With an increased diameter over stock and heavy duty hose wrap, these lines will increase overall flow and protect against future failures. Kit Includes: (3) 5/8" ID transmission lines with AN fittings (6) 7/8"-14 O-ring to -10AN fittings (2) Large OD washers Double hose clamps, locking cable ties, and fir tree cable clamps Features: Increased diameter over stock - 5/8" hose Explosion proof polyester hose protection sleeve Application Notes: Not for use on Cab and Chassis applications 2011-2014 GM Duramax Heavy Duty Replacement Transmission Cooler lines
Manufacturer fitment & guides
Check FPE-TL-LML-1114 against the manufacturer’s application information below.
Part-specific notes
- California Proposition 65: Y
