2011-2015 Duramax LML 4" Cat Back Exhaust w/ Muffler (431013) Material:Aluminized

2011-2015 Duramax LML 4" Cat Back Exhaust w/ Muffler (431013) Material:Aluminized2011 2015 Duramax LML 4" Cat Back Exhaust w Muffler (431013) 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!

The bar and plate-style cooler is far superior to the OEM-style tube and fin cooler in terms of cooling performance

This 4-piece kit is constructed of multi-layered 301 stainless steel

flat 12-point head design and larger than stock shank diameter for increased strength and improved flywheel register

0L 4" Race Pipe Kit (441003)

5mm diameter and

and performance—because "Nothing Bites Like Gator

Mounting the brace is a quick and easy job that can be done without removal of the transmission or transfer case

7L Diesel is recommended over bolts whenever possible for several key reasons

or an earthquake kit

will do the work for you

5-2010 Duramax LMM 4" Downpipe Back Exhaust No Muffler (431011 / 432011)

and clutch linkage