Sierra's 18-3928 Piston Ring Set is designed for use in Mercruiser stern drive applications. It is interchangeable with Mercruiser Stern Drive 39-74381A1 and 75422. Each Sierra product meets or exceeds the original equipment part it replaces.
Size: Standard
Interchangeable with Mercruiser Stern Drive 39-74381A1 and 75422
Includes five piston rings
Each Sierra product meets or exceeds the original equipment part it replaces
Size: Standard
Interchangeable with Mercruiser Stern Drive 39-74381A1 and 75422
Includes five piston rings
Each Sierra product meets or exceeds the original equipment part it replaces