Product JET SKIPiston Back Piston-0.75 YAMAHA 500 Brand: OSAKA MARINE Description: YAMAHA 500_Piston-0.75 Bore-0.72 You May Also Be Interested In Piston-1.0 POLARIS 700/1050 Piston-1.0 POLARIS 900 0438556 Fuel Pump Assembly For Johnson/ Evinrude/ Omc 6E7-11631-00-97 Piston Kit For Yamaha