Universal S300 Wastegated T3 Turbo Blanket (1453521)Cooler engine compartment temperatures can result in higher density that results in more power and by covering up the turbine housing of the turbo reduces under hood temperature increasing life of hoses, harnesses and coolant bottle. Not only does a blanket help cool the engine compartment, it helps retain and normalize internal turbine housing temperatures for lower spool times.

5-2010 Duramax LMM 5" Downpipe Back Exhaust w/ Muffler (531001)

Fits L87 & L8T engines only

creating a better balance between boost and drive (exhaust backpressure)

2001-2005 Duramax LB7/LLY Mahle Set of 4 Pistons w/ Rings Left Bank - Standard (224-3451WR)

No Muffler

7L Harmonic Damper Bolt Kit (147-2503)

and reinstall

This filter upgrade features an extended filter cup that houses 57% larger specially engineered 10-micron filtration media

In the case of the 2004

9L Stage 2 Injector Nozzle Set (DDP8993-2NZ)

7L PowerStroke

Cooling fins double the surface area (60