2004.5-2010 Duramax PPE Set of 2 PCV Crankcase Breather Rear Fittings (114020000)2004. 5 2010 Duramax PPE Set of 2 PCV Crankcase Breather Rear Fittings (114020000) PPE Crankcase Breather Repair Fittings are made from machined billet aluminum and replace stock composite plastic fittings. Composite plastic can become brittle and fail. These fittings allow you to repair your stock breather system. These fittings are used with external filter separators to eliminate engine oil contamination of your intake system.

and MPG but not mandatory

See the dealer bulletin below outlining the improvements and changes in filter color

7L Dynomite Diesel Custom Super Mental Injectors (DDPN67-SM)

Sold Individually

Then you are experiencing valve float and reversion

These fittings are used with external filter/separators to eliminate engine oil contamination of your intake system

000" Stroke Forged Crankshaft

combined with the increased capacity aluminum construction

radiused grooves

2001-2010 Duramax PPE Stage 3 Forged Tie Rod Assemblies (158031500)

500 RPM with mild-to-moderate cam profiles and stock-size valves

2200us - 667hp 1327tq BLUE LINES