COMP Cams Lifters 87017L-1 Designed for engines that oil through rocker shafts, these .300" taller Solid Roller Lifters from COMP Cams are engineered to withstand the demands of aggressive cam lobe designs and increased RPM ranges. They feature a wear resistant tool steel axle, precision sorted needle bearings and EDM Oil Injection Technology that guarantees the bearing assembly receives a constant flow of oil. Endure-X Solid Roller Lifters are heat treated, machined to ultra-high tolerances and fully rebuildable. Endure-X Solid Roller Lifter w/ .904" Diameter, Left Pushrod Seat, .300" Taller COMP Cams Endure-X Solid Roller Lifter for Big Block Chrysler Engines that Oil Through Rocker Arm Shafts, Single Left Offset Piece COMP Cams Roller Lifter.904 Dia Left No