2011-2015 Duramax LML 4"Cat & DPF Race Pipe No Muffler (431015)2011 2015 Duramax LML 4"Cat & DPF Race Pipe No Muffler (431015) 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! IMPORTANT NOTE: The turbo direct

Recommended Installation Guidelines

this pigtails are a great alternative to replacing the entire wiring harness

Enough fuel to support up to 950 RWHP with proper supporting modifications

2 Year Unlimited Mile Warranty

PowerHouse has created a kit that includes everything you will need for deleting your VVT system in your Gen IV LS

Manufacturer's Part Number: CS54580B

275” thick with 4

designed for more complete drainage

Designed as an OE replacement piston

9L HD Main Stud Kit (MSK5924)

performance and peace of mind

Remanufactured injector set at 20 percent over