Piston +.010 / Kohler 47 874 08-SPack Size:1Gravely 040996, Gravely 040997, Kohler 47 074 03, Kohler 47 074 18, Kohler 47 874 07-S, Kohler 47 874 08-SESF 163-361, Foley/Belsaw 5979731, Foley/PLP 163-361, Green Meadow P361, Prime Line 7-03816, Rotary 6750, Sunbelt SB-6750Gravely K301 (before Serial No. 1730100013) and M12 (old style); Kohler K301 (before Serial No. 1730100013) and M12 (old style)Ethanol: Not compatible with greater than 10% ethanol fuel, Cylinder Bore Size: 3.385"