O.S. Engines 28703200 Piston for 105HZ Engine FEATURES: Aluminum construction INCLUDES: Piston, key #4 COMMENTS: Order OSMG7812 if Piston Ring is needed jxs 05/02/12 ir/jxs INCLUDES: Piston, key #4 COMMENTS: Order OSMG7812 if Piston Ring is needed jxs 05/02/12 ir/jxs