Oil pump and cam plate are precision-machined from billet aluminum with a blue anodized finishPassage plugs are removable for servicingIndependent scavenge sections for the flywheel cavity and cam chestDebris screens in both scavenge pickupsIncreased oil flow capacity on both the feed and the scavenge sidesAdjustable pressure relief valve is adjustable with the unit installed in the engineS&S premium tappetsBillet aluminum tappet cuffs have a hard-anodized black coating and are stronger than stock to eliminate distortion and improves tappet stability in high-lift situationsMade in the USAIncludes cam chain tensioner.Will fit M8 with VVT.