Piston +.010 / Kohler 47 874 13-SPack Size:1Kohler 47 874 13, Kohler 47 074 08, Kohler A-237403, Kohler 47 874 13-SESF 163-365, Foley/Belsaw 5979734, Foley/PLP 163-365, Green Meadow P365, Prime Line 7-03820, Rotary 6754, Sunbelt SB-6754Kohler K321 and M14 (old style)Ethanol: Not compatible with greater than 10% ethanol fuel, Cylinder Bore Size: 3.510"