Mercury Mercruiser Marine - STUD @3 (#16-21831) PRICE: $0.60 $0.48 Part #: 16-21831 This product is no longer available. Mercury Assemblies CYLINDER BLOCK AND CRANKCASE ASSEMBLY MERCURY1000 CYLINDER BLOCK AND CRANKCASE ASSEMBLY MERCURY650 (4 CYL.) CYLINDER BLOCK AND CRANKCASE ASSEMBLY MERCURY500 CYLINDER BLOCK AND CRANKCASE ASSEMBLY MERCURY450 (4 CYL.) CYLINDER BLOCK AND CRANKCASE ASSEMBLY MERCURY650 (3 CYL.) HYDRAULIC PUMP AND CONTROL PANEL MERCRUISER90 RENAULT 96 I/L4 1970-1972 MERCRUISER90 (Sterndrive) 1970-1972 CYLINDER BLOCK AND CRANKCASE ASSEMBLY (MERC 850E) MERCURY850 (6 CYL.) CYLINDER BLOCK AND CRANKCASE ASSEMBLY MERCURY400 CYLINDER BLOCK AND CRANKCASE ASSEMBLY MERCURY800 (6 CYL.) CYLINDER BLOCK AND CRANKCASE ASSEMBLY HEAT EXCHANGER AND THERMOSTAT HOUSING CYLINDER BLOCK AND CRANKCASE ASSEMBLY (EXHAUST SIDE) MARKMARK 40, KG9, KF9 CYLINDER BLOCK AND CRANKCASE ASSEMBLY MARKMARK 30H, 55H CYLINDER BLOCK AND CRANKCASE ASSEMBLY MARKMARK 55AE, 55AM, 58AE, 58E RIDE-GUIDE STEERING WHEEL KIT A RIDE-GUIDE STEERING WHEEL KIT B RIDE-GUIDE STEERING KIT A RIDE-GUIDE STEERING KIT RIDE-GUIDE STEERING WHEEL ASSEMBLY A RIDE-GUIDE STEERING WHEEL ASSEMBLY B RIDE-GUIDE STEERING WHEEL ASSEMBLY C FULL POWER TILT ASSEMBLY CYLINDER BLOCK AND CRANKCASE ASSEMBLY MERCURY700 (6 CYL.) CYLINDER BLOCK AND CRANKCASE ASSEMBLY MARKMARK 75A, 78, 78A CYLINDER BLOCK AND CRANKCASE ASSEMBLY CYLINDER BLOCK AND CRANKCASE ASSEMBLY (MERC 850E-1)