The Sierra 18-1936 Riser is interchangeable with the following: GLM 51520, Volvo Penta 857037. Each Sierra product meets or exceeds the original equipment part it replaces. Composed of high-quality, marine-grade Cast Iron for optimal performance and reliability.
Sierra Riser replacement
Meets or exceeds the original equipment quality
Composed of high-quality, cast iron material
Interchangeable with the following: GLM 51520, Volvo Penta 857037
