The Water Pump Kit - Sierra Marine Engine Parts - 18-3431 (118-3431) is a complete water pump service kit that is made with precision to give its best performance. It is made with durable and high-quality marine-grade materials. The Water Pump Kit - Sierra Marine Engine Parts - 18-3431 (118-3431) includes Impeller, Insert Cup, Wear Plate, O-Ring, and Bolts. This water pump kit is for Yamaha outboard 6l2-w0078-00-00. Water Pump Kit - Sierra Marine Engine Parts - 18-3431 (118-3431) is interchangeable with 6L2-W0078-00, 6L2-W0078-00-00, 47-3431, 30999975782, and 3099997578. Key Features: It is a complete water pump service kit that is made with precision to give its best performance. It is made with durable and high-quality marine-grade materials. It includes Impeller, Insert Cup, Wear Plate, O-Ring, and Bolts. This water pump kit is for Yamaha outboard 6l2-w0078-00-00. Specifications: Brand: Sea Star Solutions SKU: 18-3431 UPC: 030999975782 Weight: 0.35 LBS Alternate Products SKU: "46-03431", "46-02346", "18-3395" Unit Of Measure: EA Manufacturer Part Number (MPN): 118-3431 Yamaha Outboard Water Pump Repair Kit, Including Impeller, Insert Cup,Wear Plate, O-Ring and Bolts