Siverado/Sierra 2500/3500 2001-16 6.6L Heavy Duty Head Stud Kit Gator Fasteners Duramax LB7 CP4 high pressure pumps are

CP4 high pressure pumps are the Achilles heel of the LML Duramax engine because of high failure rates

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Upgraded Design For Increased Durability

and still maintains factory emissions control equipment for $2

High Pressure Dual Pump Line (CP3 to CP3)

Siverado/Sierra 2500/3500 2001-16 6.6L Heavy Duty Head Stud Kit Gator Fasteners Duramax LB7 CP4 high pressure pumps areIf you are wanting to keep your 6. 6L Duramax on the road for the long haul, you need to replace your head bolts with upgraded head studs. The Gator Fasteners Head Stud Kit is a must have in any high performance 2001 2016 GM 6. 6L Duramax. To overcome head gasket failures that can occur in diesel engines in these high performance applications, Gator Fasteners has introduced heavy duty head studs for the popular GM LB7, LLY, LBZ, LMM, LML Duramax