The 18-3322 Water Pump Kit by Sierra is designed for use with various Mercury outboard engines, including 35 HP, 40 HP, 50 HP, and 65 HP models (prior to 1976).
The kit includes: (1) Sierra 18-2823 Lower Water Pump Gasket, (1) Sierra 18-2824 Water Pump Gasket, (1) Sierra 18-2825 Water Pump Base Gasket, (1) Sierra 18-2841 Water Pump Base Gasket, (2) Sierra 18-2945 Drain Screw Gaskets, (1) Sierra 18-2948 Rubber Washer, (1) Sierra 18-3007 Impeller, (1) Sierra 18-3107 Impeller Plate, (1) Sierra 18-3118 Water Pump Housing, (1) Sierra 18-3422 Water Pump Base, (1) Sierra 18-7115 O-Ring, (1) Sierra 18-7155 O-Ring, (1) Sierra 18-7174 O-Ring, and (1) Sierra 18-0539 Exhaust Leg Rubber Seal.
It is interchangeable with GLM 12170, Mallory 9-48303, and Mercury Marine 46-77516A3.
Each product from Sierra meets or exceeds the original equipment part it replaces.