Shop by Brand Yamaha OutboardRetainer Back Retainer Pinion Assy 66T-81857-00 Viewer:1017 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 Sping 663-15713-10 Oil Seal 93101-22059