Shop by Brand Mercury OutboardBearing Back Needle Bearing 31-160521 Viewer:111 OEM No.:31-160521 For Mercury outboard 9.9, 15, 18 HP 2 & 4 Stroke You May Also Be Interested In Bearing Kit 31-16756A6/16756A6 Bearing 31-12578T/12578T Reed Valve, Stopper 13152-90L00 Nut 95380-08600-00