Shop by Brand Yamaha OutboardRetainer Back Retainer Pinion Assy 66T-81857-00 Viewer:1034 OEM No.: 66T-81857-00 For YAMAHA outboard 40 HP You May Also Be Interested In Retainer Pinion Assy 66T-81857-00 Retainer 6H1-81857-00 Propeller 6E5-45941-00-EL Propeller Shaft 69K-45611-00-00