505-018 Stens Exhaust Valve compatible with Kohler 235838-S Gravely 010777 20049300

505-018 Stens Exhaust Valve compatible with Kohler 235838-S.  Compatible with Gravel 0110777 and 20049300.  Compatible with Kohler 235838 and 235838-S. Face angle diameter is 45 degrees.  Not compatible with greater than 10% ethanol fuel.  Head diameter 1-1/8", length 4-5/8", stem outer diameter 0.309".  Compatible with Gravely K241-K321 and Kohler K241, K301, K321, M10 and M12.