Sierra 18-2629 Mercury Lower Unit Seal KitSierra high-quality engine parts are designed to meet OEM specifications. For use on Mecury Marine Engines.Interchangeable with: Chrysler/Force/US Marine; 26-85090A1; GLM; 87575; Mercury Marine; 26-85090A1; Kit Includes: (2) 18-2006 Oil Seal; (2) 18-2560 Impeller Washer Gasket; (1) 18-2562 Impeller Gasket; (1) 18-2742 Shift Shaft Boot; (2) 18-2945 Drain Screw Gasket; (1) 18-7100 O-Ring; (1) 18-7135 O-Ring; (1) 18-7419 O-Ring; (1) 18-7956 O-Ring (Pkg of 5); Application:Mercury Marine 18 HP; 1980, 1982, 1983; s/n 5837437 thru 6416712; s/n 7173723 thru 7207857; s/n 8071973 & Up; s/n 9308306 thru 9378115; 25 HP; 1980, 1982, 1983; s/n 5705532 thru 6416712; s/n 7166928 thru 7207857; s/n 8073158 & up; s/n 9315316 thru 9378115;