As the best all-around high performance Hydraulic flat tappet lifter, Race Hydraulic Lifters from COMP Cams are designed to stand up to the abuse of racing. They feature tighter plunger to body tolerances and super strict tolerances for the mechanical internals. With premium one-piece pushrod seats, heavy-duty snap rings and a lubrited cam face, Race Hydraulic Lifters offer superior performance and durability. PartNumber : cca84000-1 Description : Race Hydraulic Flat Tappet Lifter; Single Piece Title : 84000-1 Hydraulic FLT Tapper LiftR, CHVY BB and SB California Proposition 65 : WARNING: Cancer and Reproductive Harm P65Warnings.ca.gov Engine Family : Chevrolet Small and Big Block Lifter Diameter : 0.842 Lifter Series : Race Lifter Type : Hydraulic Flat Tappet Seat Height : 2.01 Weight : 104 Diameter : .842" Weight : 104g Seat Height : 2.01" Engine Components::Lifters