2007.5-2010 Duramax LMM 5" Downpipe Back Exhaust No Muffler (531002)2007. 5 2010 Duramax LMM 5" Downpipe Back Exhaust No Muffler (531002) 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!

7L 4" Downpipe Back Dual Exhaust (421005 / 422005)

2011-2016 Duramax LML Dynomite Diesel Stock Brand New Injector (DDPNLML-STK)

The last thing anyone needs is a failure from this scenario so protect your investment with a set of springs meant to take the abuse

Borla Exhaust Cleaner & Polish 8OZ (21461)

This complete kit from Alliant Power gives you all of the components you'll need to replace the head gaskets on your 6

GM Gen III / Gen IV LS Katech CNC Ported Oil Pump (KAT-A6390)

AEM Wideband Gauge (Only for boosted applications)

4L C&C 4" Downpipe Back Exhaust (421015)

4L 08-10 Clean Custom series injector set intended for 1

Warm up the engine in your 2006-2007 GMC/Chevy 6

In the case of the 2004

0L VT365 Dualoy Reduced Compression Height Piston & Ring Kit (7214DKT)