Shop by Brand Mercury OutboardShim ; Washer Back Washer- 12-858234 Viewer:278 OEM NO. 12-858234 You May Also Be Interested In Washer 12-16146/16146 Shim 12-8M0050425/8M0050425 Piston Ring 12140-95302-025 0.25 Bearing 93311-832U4-00/93311-83219