Products MercuryGear Case / Drive Shaft Case Back Upper Gear Case 1547-9412A18 / 19000 Item number: 1547-9412A18 Similiar number: GLM 19000 For MC-I, R, MR, Alpha One (1972-1990) You May Also Be Interested In Gear Housing 1623-8951A37 / 18000 Gear Case 1623-815822A30 / 28000 E-ring 53-29641 / 29641 Piston Kit 09-692