Description Master Overhaul Kit 1981-1990 AMC-Jeep 4.2L 258 CID 6 Cylinder Kit Includes: Silvolite Cast Pistons (select your size) Rings (select your size) Rod Bearings (select your size) Main Bearings (select your size) Cam Bearings Oil Pump Stock Replacement Camshaft Valve Lifters Timing Set Freeze Plugs Overhaul Gasket Set