Yanmar KM4A Gear R 2.14 for 4JH5 – KM4AS-5

Description

Yanmar KM4A Gear R 2.14 for 4JH5 – KM4AS-5 is a marine transmission component designed for integration with Yanmar diesel propulsion systems that use an inboard gearbox configuration. It functions as the mechanical interface between the engine and the propeller shaft, transferring engine output efficiently in sailboats and auxiliary powerboats operating with inboard diesel installations. This unit is part of an OEM Yanmar marine propulsion assembly and is intended for standard marine drivetrain layouts where accurate alignment is required.

This gearbox is configured with a 2.14 reduction ratio and is specifically compatible with Yanmar 4JH5-series diesel engines specified for KM4A gear applications. The reduction ratio supports appropriate propeller shaft speed and torque characteristics for typical marine operating conditions. When installed according to manufacturer specifications, it integrates with approved engine mounts, controls, and shafting systems without modification as an OEM Yanmar marine gearbox replacement.

This Yanmar marine gearbox is typically used for replacement of existing transmissions, repower projects involving compatible 4JH5 engines, or new marine installations requiring an OEM Yanmar marine propulsion transmission solution.