Fleece Heavy Duty Transmission Cooler Lines for 2011-2014 Chevy/GMC LML Duramax
FPEFPE-TL-LML-1114Drips under the trans lines on a 2011-2014 LML mean it's time for new lines. Go bigger while you're at it.
Fleece calls this the most complete replacement trans line kit for the LML. The lines are larger in diameter than stock and wrapped in heavy duty hose protection, so they flow more and protect against future failures.
Features
- Increased diameter over stock: 5/8" hose
- Explosion proof polyester hose protection sleeve
- Heavy duty, high flow, flexible lines
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
Note: Not for use on cab and chassis applications.
Specs
- Hose ID: 5/8"
- Engine: 6.6L LML Duramax
- Part number: FPE-TL-LML-1114
Fitment
- Chevrolet Silverado 2500 HD: 2011-2014 LT, LTZ, WT
- Chevrolet Silverado 3500 HD: 2011-2014 LT, LTZ, WT
- GMC Sierra 2500 HD: 2011-2014 Denali, SLE, SLT, WT
- GMC Sierra 3500 HD: 2011-2014 Denali, SLE, SLT, WT
Available now at PPEI Tuning, shipping fast from our local and nationwide warehouses.
Couldn't load pickup availability

WHO IS THE TUNER/CALIBRATOR
PPEI, also known as Power Performance Enterprises, Inc., is led by the business owner and lead calibrator/tuner Kory Willis. PPEI began calibrating/tuning back in 2008, specializing in Diesel Performance but has since expanded into the Gas and Powersports industries. Kory and the team at PPEI have set many world records along with continuing many industry “firsts”. We take pride in knowing that Kory not only prides his work, but also thoroughly enjoys setting expectations high for our team so our customers can have the best products available in the world.







