Sierra Water Pump Repair Kit 18-3688Application: Mercury 75-115HP serial 1B366823-2B094995; Interchangeable with: Mercury Marine; 8M0113799; Kit Includes: Water Pump Housing (1); Cover Assembly (1); Short Seal 1 3/4" (1); Seal (1); Bolts M6x30 (4); Drain Screw Gasket (4) 18-2430-9; Gasket, Impeller (1) 18-2566-9; Impeller (1) 18-3056; Impeller Key (1) 18-3293; O-ring (1) 18-7188-9; Impeller Plate (1) 18-3122; Impeller Gasket (1) 18-2564-1-9;