Shop by Brand Yamaha OutboardRetainer Back Retainer Pinion Assy 66T-81857-00 Viewer:1050 OEM No.: 66T-81857-00 For YAMAHA outboard 40 HP You May Also Be Interested In Retainer 6H1-81857-00 Retainer Pinion Assy 66T-81857-00 Piston Ring 436360/0436360 0.020 Crank Pin 677-11681-00