Shop by Brand Yamaha OutboardPiston/Piston Kit ; Piston Pin ; Piston Ring Back Piston Ring 664-11610-00 STD Viewer:792 OEM No. : 664-11610-00-STD For YAMAHA Outboard 25, 30 HP You May Also Be Interested In Piston Kit 6R5-11645-01 0.25 Piston Kit 6K5-11631-03 STD Drive Shaft 6G1-45511-10-00 Shim 12-8M0050438/8M0050438