Yanmar ZT370H Mechanical Shift Ratio 1.65 (Loose) – ZT370H-M-165

Yanmar ZT370H Mechanical Shift Ratio 1.65 (Loose) – ZT370H-M-165 is a loose sterndrive transmission unit engineered for Yanmar ZT370H series marine propulsion systems requiring a 1.65:1 reduction ratio with mechanical (M-Shift) control compatibility. This OEM Yanmar marine gearbox component is designed for integration into sailboats and powerboats where a specified sterndrive ratio and mechanical shift interface are required, supporting the transfer of engine torque through the marine gearbox to the propeller assembly without unverifiable performance claims.

Intended for applications that call for a 1.65 reduction ratio on compatible ZT370H sterndrives, this unit aligns with original equipment specifications associated with “marine gearbox for sterndrives” and “Yanmar sterndrive transmission component.” The mechanical shift designation indicates compatibility with traditional marine control systems that utilize mechanical throttle and shift linkages typical of many propulsion installations, facilitating integration with existing control architectures without promotional language.

This Yanmar ZT370H Mechanical Shift Ratio 1.65 (Loose) – ZT370H-M-165 is appropriate for scheduled maintenance replacement, engine repower projects, or new installations where a compatible Yanmar sterndrive transmission with a 1.65 ratio and mechanical shift interface is required to support dependable marine propulsion system integration.