Features
•New casting
•New valve guides, new springs, and new valve seals
•Pressure and leak tested
•Precision ground stock valves with a 45 degree angle
•Multi-angle valve job
Notes
We recommend using GM 12637788 head gasket (Grade C, Right) and GM 12637785 head gasket (Grade C, Left)
Fitment:
2011 GM Silverado/Sierra 2500/3500 6.6L LML Duramax
2012 GM Silverado/Sierra 2500/3500 6.6L LML Duramax
2013 GM Silverado/Sierra 2500/3500 6.6L LML Duramax
2014 GM Silverado/Sierra 2500/3500 6.6L LML Duramax
2015 GM Silverado/Sierra 2500/3500 6.6L LML Duramax
2016 GM Silverado/Sierra 2500/3500 6.6L LML Duramax