Yanmar KMH50V-3 RR 1.58 Gearbox for 4LV Series (M-Shift) – KMH50V-3 158 4LV
The Yanmar KMH50V-3 RR is an angle reduction gear unit for 4LV series marine diesel engines with mechanical (M-Shift) control, providing a 1.58:1 reduction and right-hand output rotation. It delivers engine torque to the propeller shaft on shaft-driven sailboats and powerboats.
Coded KMH50V-3 158 4LV, this OEM Yanmar gear is meant for installations that need the 1.58 ratio and right-hand rotation on a 4LV engine with mechanical shift control. The M-Shift designation identifies it for the mechanical shift systems found on select 4LV configurations, so it fits with the engine's existing control setup.
Highlights
1.58:1 reduction ratio
Right-hand (RR) output rotation
Mechanical shift (M-Shift) version
For Yanmar 4LV series marine diesel engines
Angle reduction gear for shaft-driven boats
Specifications
Brand | Yanmar |
Model | KMH50V-3 |
Model Code | KMH50V-3 158 4LV |
Type | Angle reduction gear |
Reduction Ratio | 1.58:1 |
Output Rotation | Right-hand (RR) |
Shift Type | Mechanical (M-Shift) |
Engine Compatibility | Yanmar 4LV series |
Good to know
Installation, rigging and commissioning by a qualified marine technician are recommended; follow the manufacturer's pre-delivery and break-in procedures.