Sierra’s 18-3942 Piston Ring Set is designed for use in Mercruiser stern drive applications. It is interchangeable with Mercruiser Stern Drive 39-34479, 39-58096 39-67119, and 39-67132. Each Sierra product meets or exceeds the original equipment part it replaces.
Size: Standard
Interchangeable with Mercruiser Stern Drive 39-34479, 39-58096 39-67119, and 39-67132
Includes five piston rings
Each Sierra product meets or exceeds the original equipment part it replaces
