Sierra's 18-2353 Shift Rod Bushing Assembly is designed for use with Mercruiser Alpha I Gen II (s/n 0D469859-0K999999) stern drives. Includes one shift rod bushing assembly per package. It is interchangeable with GLM 21015, Mallory 9-76136, Mercruiser Stern Drive 23-815921A10, 23-815921A17, 23-815921A2, 23-815921A21, 23-815921A6, and 23-815921A8. Each Sierra product meets or exceeds the original equipment part it replaces.