Yanmar KMH50V-3 RR 1.58 for 4LV Series (M-Shift) – KMH50V-3 158 4LV

Description

Yanmar KMH50V-3 RR 1.58 for 4LV Series (M-Shift) – KMH50V-3 158 4LV is an angle reduction gear unit designed for use with Yanmar 4LV series marine diesel engines equipped with mechanical (M-Shift) transmission, providing a 1.58:1 reduction ratio and right-hand (RR) output rotation. This OEM Yanmar marine propulsion component is engineered to transfer torque from the engine through the marine gearbox to the propeller shaft in shaft-driven sailboats and powerboats where a precise angle gear ratio is specified, helping maintain proper mechanical integration without unverifiable performance claims.

Intended for installations that require a 1.58 reduction ratio and right-hand rotation on compatible Yanmar 4LV series engines with mechanical shift control, this angle gear aligns with original equipment specifications for “marine gearbox for sailboats / powerboats” and “OEM Yanmar marine propulsion component.” The M-Shift designation denotes compatibility with mechanical shift systems typical of select 4LV configurations, supporting seamless fitment with the engine’s existing control setup.

This Yanmar KMH50V-3 RR 1.58 for 4LV Series (M-Shift) – KMH50V-3 158 4LV unit is suitable for scheduled maintenance replacement, repower projects, or new installations requiring a matched angle reduction gear to support reliable torque delivery and propeller drive integration.