MowerPartsGroup TS420 Cylinder Rebuild Kit TS420 TS410 Filters Belt Decomp Valve & Gaskets Includes (1)Cylinder, (1)Piston, (2)Piston Rings, (1)Piston Pin w/ retaining clips, (1)Gasket set, (1)2pc Air Filter Set, (1)Bosch Spark Plug, (1)Belt, (1)Decompression Valve Cylinder Replaces OEM: 4238-020-1202, 4238-020-1205 Piston & Rings Replaces OEM: 4238-030-2003, 1128-034-3000, 9463-650-1000, 4238-034-1500 Air Filter Replaces OEM: 4238-140-4403 Decompression valve Replaces OEM: 4238-020-9400