Chrome Piston Ring +.030 / Kohler/48 108 04-s Pack Size:1 GRAVELY 012366, KOHLER 48 108 04, KOHLER 235892, KOHLER 48 108 04-S GREEN MEADOW R318, PRIME LINE 7-03774, ROTARY 6804, SUNBELT SB-6804 GRAVELY K301 and K532, before serial #1730100013; for12 HP engines; KOHLER K301 and K532; for 12 HP engines Before serial #1730100013 , Cylinder Diameter: 3.405 ", Size: +.030Silver Streak