The Water Pump Kit Without Housing - Sierra Marine Engine Parts - 18-3312 (118-3312) is made with durable and high-quality marine-grade materials. It includes one (1) Sierra 18-0244 Water Pump Gasket, four (4) Sierra 18-0256 Bolts, one (1) Sierra 18-3071 Impeller, one (1) Sierra 18-3302 Impeller Key, one (1) Sierra 18-3333 Insert Cup, one (1) Sierra 18-3344 Wear Plate, one (1) Sierra 18-7483 O-Ring, one (1) Sierra 18-7485 O-Ring, two (2) Dowell Pins, and four (4) Bolt Washers. The Water Pump Kit Without Housing - Sierra Marine Engine Parts - 18-3312 (118-3312) is a complete water pump service kit that is made with precision to give its best performance. Key Features: It is made with durable and high-quality marine-grade materials. It includes one (1) Sierra 18-0244 Water Pump Gasket, four (4) Sierra 18-0256 Bolts, one (1) Sierra 18-3071 Impeller, one (1) Sierra 18-3302 Impeller Key, one (1) Sierra 18-3333 Insert Cup, one (1) Sierra 18-3344 Wear Plate, one (1) Sierra 18-7483 O-Ring, one (1) Sierra 18-7485 O-Ring, two (2) Dowell Pins, and four (4) Bolt Washers. It is a complete water pump service kit that is made with precision to give its best performance. Specifications: Brand: Sea Star Solutions SKU: 18-3312 UPC: 030999753304 Weight: 1.17 LBS Alternate Products SKU: "46-02345", "18-3312" Manufacturer Part Number (MPN): 118-3312 Yamaha Outboard Water Pump Repair Kit. Includes Impeller, Insert Cup, Wear Plate, Gasket, Key and Bolts