2007.5-2010 Duramax LMM Cab & Chassis 4" Cat Back Race Pipe w/ Muffler (431012)2007. 5 2010 Duramax LMM Cab & Chassis 4" Cat Back Race Pipe w Muffler (431012) Constructed out of 16 gauge aluminized steel or T409 Stainless, this exhaust system is designed to simplify installation with included clamps, preweld contour bends and improved flanges. Enjoy a noticeable boost in performance, lowered EGTs and amplified air flow with this Mel's system. For powerhouse performance, Mel's delivers horsepower you can hear!

Trucks that run in warmer climates

specifically used only for LBZ / LMM

and the results are far superior to those lesser quality studs from other manufacturers who just dump pieces in a basket and hope for the best

Schaeffer's SynShield Durability Advantage Diesel Engine Oil 15W-40 (700)

Cab & Chassis

This leads to the valve opening too early which causes excessive amounts of fuel to be returned to the tank

2016-2019 Nissan Cummins 5

Use the performance dose for additional cetane boost

Threaded Plate for stock EGT Probe

We have torture tested it for longevity

"The Race Car Muffler that provides the best performance

with threads rolled after heat-treating to provide optimum fatigue strength