Sierras 18-3211 Impeller Kit is designed for use with Johnson/Evinrude outboard engines. The kit contains: (1) Sierra 18-2536 Impeller Housing Seal, (1) Sierra 18-2557 Impeller Gasket, (1) Sierra 18-3059 Impeller with Key, (1) Sierra 18-3138 Impeller Key, (1) Sierra 18-3299 Impeller Key, (1) Sierra 18-7158 O-Ring, and (1) Impeller Plate. It is interchangeable with GLM 12105 and Mallory 9-48202. Each Sierra product meets or exceeds the original equipment part it replaces. Fit specific, check part numbers to ensure proper fit.