Description

Sierra’s 18-3924 Piston Ring Set is designed for use in Mercury marine applications. It is interchangeable with GLM 14270 and Mercury Marine 39-18487A12. Each Sierra product meets or exceeds the original equipment part it replaces.
Bore Size: 3.375
Interchangeable with GLM 14270 and Mercury Marine 39-18487A12
Includes two piston rings
Each Sierra product meets or exceeds the original equipment part it replaces