Sierra 18-3217 Impeller Kit for Mercury #1 Drives through Serial Number D494568, Non-Retail Packaging DETAILS Impeller is made from a neoprene rubber compound for added flexibility and long lasting performance Sierra Impellers are molded to maintain high quality standards and have been inspected and tested for proper bonding and performance Kit comes complete with: (1) Water Tube, Sierra Part #18-3109; (1) Impeller, Sierra Part #18-3017; (1) Water Pump Base to Gear Housing Gasket, Sierra Part #18-2919; (1) Grommet, Sierra Part #18-3110; (2) Gear Housing Drain Screw Gaskets, Sierra Part #18-2945; (1) Water Pump Base to Gear Housing Gasket, Sierra Part #18-2826; (1) Lower Water Pump to Wear Plate Gasket, Sierra Part #18-2914; (1) Upper Water Pump to Wear Plate Gasket, Sierra Part #18-2915; (1) Seal Ring, Sierra Part #18-2944; (1) Plate, Sierra Part #18-3117; (1) O-Ring, Sierra Part #18-7158; (1) O-Ring, Sierra Part #18-7162; (1) O-Ring, Sierra Part #18-7173; (1) O-Ring, Sierra Part #18-7176; (1) Water Pump Gasket, Sierra Part #18-2801; (1) O-Ring, Sierra Part #18-7196; (1) O-Ring, Sierra Part #18-7426 Made to meet or exceed Original Equipment specifications for quality and performance All Sierra parts qualify for and are covered under Sierras Industry Leading Customer Satisfaction Fits: Alpha Pre-1992 #1 Drives & MR Drives through Serial Number D494568 Replaces: Mercury 46-32437A3, 46-37433A1, 46-44292A4, 46-44579A4, 46-48747A3, 46-57234A3, 46-58618A4, 46-60367A1 & A4, 46-64141A11, 46-69222A3, 46-73803A3 & 4A3, 46-78400A2, 46-9614888, 46-96148A5 & A8; GLM 12290 ABOUT SIERRA Sierra is dedicated to protecting you and your investment. For 50 years Sierra, one of the most trusted names in the marine industry, has proudly been offering high quality engine and drive parts. Their products meet or exceed the original equipment part it replaces and are engineered to meet todays high horsepower engine demands while withstanding the harsh marine environment. Sierras CUSTOMER SATISFACTION All Sierra parts qualify for Sierras Industry Leading Customer Satisfaction . Sierra warrants its products to be free of defects in workmanship and materials for the useful life of the product. If a Sierra product fails to comply with the , Sierra will repair or replace the defective product free of charge. The is subject to additional terms, conditions and limitations. You can view Sierras full located above in the Technical Specification Section.