Yanmar KMH4A Gear R 2.45 for JH3-DTE / JH4-TE – KMH4AG

Description

Yanmar KMH4A Gear R 2.45 for JH3-DTE / JH4-TE – KMH4AG is a marine transmission component designed for integration with Yanmar diesel propulsion systems that require an inboard reduction gearbox. It functions as the mechanical interface between the engine and the propeller shaft, transmitting engine output in sailboats and auxiliary powerboats operating with inboard diesel installations. This unit forms part of an OEM Yanmar marine propulsion configuration and is intended for standard marine drivetrain layouts where reliable alignment is required.

This gearbox is configured with a 2.45 reduction ratio and is compatible with Yanmar JH3-DTE and JH4-TE diesel engines specified for KMH4A-series 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 JH-series engines, or new marine installations requiring an OEM Yanmar marine propulsion transmission solution.