Fits Models: Gravely K301 (before Serial No. 1730100013) and M12 (old style)Kohler K301 (before Serial No. 1730100013) and M12 (old style)
Specifications: Piston Size: Std. Piston Size Std. Ethanol Not compatible with greater than 10% ethanol fuelCylinder Bore Size: 3.375"
Additional Information: Use with 500-736 Piston Rings STD 500-736 Piston Rings STD, Included in the 785-477 Overhaul Kit 785-477 Overhaul Kit
