Sierras 18-8903 Impeller is designed for use with select Chrysler/Force 9.9 HP, 10 HP, 12 HP, 15 HP, 20 HP, and 25 HP outboard engines. Use with Sierras 18-3240 Water Pump Kit. Includes one impeller per package. It is interchangeable with GLM 89614, Mallory 9-45004, and Chrysler/Force/US Marine 47-F436065-2, F436065, and F436065-1. Each Sierra product meets or exceeds the original equipment part it replaces. Fit specific, check part numbers to ensure proper fit.