01-17 Duramax Fleece Coolant Block Off PlateUpgrade your rear engine cover and stop the coolant leaks for good! Fleece's blocking plate for 2001 2017 GM Duramax diesels is thicker than the stock plate and has an integral square cut O ring with no gasket required. OE covers are prone to leakage over time, our billet coolant block off plate with an integral O ring is an upgrade for your rear engine cover and will the stop the coolant leaks for good. Direct Replacement for GM P N: 97941204 Fleece

and intake system (PCV re-route sold separately see 003-1-HSP)

20% Greater Flow Over Stock

Fits: 4x4 2007-2010 Chevy & GMC 2500 & 3500 applications with the 6

Anodized Black

RDS Exclusive 64mm 6 blade dual plane compressor wheel

the truck was driven regularly by not only the engineers at H&S Performance

this cam will help you considerably

Requires a tuner that can turn off grid heater code

crop and save to your CTS2 unit for the ultimate in customizability

Level 4 65hp/160tq

5-1 MPG increase

Note: 2011+ Must use a filter head spacer plate