Chrome Piston Ring +.030 / Kohler 48 108 08-SPack Size:1Gravely 014817, Gravely 20172700, Kohler 48 108 08, Kohler 236766, Kohler 48 108 08-SESF 163-321, Foley/Belsaw 5979724, Foley/PLP 163-321, Green Meadow R321, Prime Line 7-03777, Rotary 6807, Sunbelt SB-6807Gravely K321, K582 and M14 (old style); Kohler K321, K582 and M14 (old style)Cylinder Diameter: 3.530 ", Ethanol: Not compatible with greater than 10% ethanol fuel