Sierra's 18-3517 Water Pump Kit does not include the base. It is designed for use with Mercury/Mariner 65 HP (4 Cylinder) through V6 outboards with short-vane impellers. It is also designed for use with Mercruiser I, R, MR, and Alpha stern drives (s/n 2495186-0D469858). The kit contains: (1) Sierra 18-2801 Water Pump Gasket, (1) Sierra 18-2826 Water Pump Base Gasket, (1) Sierra 18-2914 Water Pump Gasket, (1) Sierra 18-2915 Water Pump Gasket, (1) Sierra 18-2919 Water Pump Gasket, (1) Sierra 18-2944 Seal Ring, (2) Sierra 18-2945 Drain Screw Gaskets, (1) Sierra 18-3017 Impeller, (1) Sierra 18-3109 Water Tube Guide, (1) Sierra 18-3116 Water Pump Housing, (1) Sierra 18-3117 Impeller Plate, (1) Sierra 18-7158 O-Ring, (1) Sierra 18-7162 O-Ring, (1) Sierra 18-7173 O-Ring, (1) Sierra 18-7176 O-Ring, (1) Sierra 18-7426 O-Ring, and (1) O-Ring. It is interchangeable with GLM 12280; Mallory 9-48311; Mercruiser Stern Drive 46-32437A3, 46-37433A1, and 46-96148A8; and Mercury Marine 46-32437A1, 46-37433A1, 46-42579A4, 46-44292A4, and more. Each Sierra product meets or exceeds the original equipment part it replaces. Fit specific, check part numbers to ensure proper fit.
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