Master Engine Rebuild Kit Includes:Re-ring Kit: (Rings, Rod Bearings, Gasket Set ), Pistons, Main Bearings, Oil Pump, Freeze Plugs, Pin Bushings, Timing Kit Standard Engine Kit Includes: Everything in Master Kit except Timing Set and Cam kit. Re-ring Kit + Main Bearings Includes: Piston Rings, Rod Bearings, Gasket Set, and Main Bearings