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you can make adjustments to the shift points
0L Powerstroke engine is dying for improved exhaust flow
enhances throttle response
Built-in polyurethane jounce bumper prevents bottoming out and air spring damage
Hand cut aluminum material provides more efficient cooling properties than stock
Cometic MLS Left Side Head Gasket 01-07 GM 6.6L Duramax LB7/LLY/LBZ/LMM/LML | .140" Choose Gasket Thickness:.055" you can make adjustments toBuilt for reliability under stock or high performance conditions, this premium multi layer steel (MLS) head gasket delivers consistent sealing for GM Duramax engines. Designed to maintain proper cylinder pressure and withstand extreme heat and boost, its available for both Left (Driver) and Right (Passenger) side fitment. Choose from multiple thickness options to match your piston protrusion, head resurfacing, or compression ratio needs: . 027"
