2007.5-2010 Duramax LMM 4" Downpipe Back Exhaust No Muffler (431011 / 432011)2007. 5 2010 Duramax LMM 4" Downpipe Back Exhaust No Muffler (431011 432011) 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!

Upgraded turbo and modified injection pump highly recommended

and is well suited for use in high-performance applications

This reduces the thermal cycle and surface temperature

5-2005 Duramax LLY Dynomite Diesel Economy Series Reman Injector Set (DDPLLY-ECO)

the "Bowl Delete" Regulated Return kit also eliminates the restrictive stock fuel filter bowl

intake manifold gaskets and any other connection point to visualize the air leaking

9L Injector Set 75HP (DDPISB-75)

The Mahle CS54580A lower engine gasket set gives you all the gaskets and seals needed to reseal the lower engine on your 6

or just looking to upgrade the power levels

These gasket sets are not intended for race applications

9L Mean Green Gear Reduction Starter (MG7892)

This means not only do you get more power