Yanmar KM4A Marine Gearbox for 4JH5, 2.63:1 Reduction (KM4AG-5)

The Yanmar KM4AG-5 is a compact KM4A inboard marine gearbox with a 2.63 reduction ratio for Yanmar 4JH5-series diesel engines. It links the engine to the propeller shaft on sailboats and auxiliary powerboats with inboard diesel power.

This OEM Yanmar unit is specified for 4JH5-series engines in KM4A gear applications. When installed to the manufacturer's specifications, it works with approved engine mounts, controls and shafting without modification.

Typical uses are transmission replacement, repowers with a compatible 4JH5 engine and new marine installations that require an OEM Yanmar transmission.

Highlights

• Yanmar KM4A compact inboard marine gearbox

• 2.63:1 reduction ratio

• For Yanmar 4JH5-series diesel engines

• Part number KM4AG-5

• Fits approved mounts, controls and shafting when installed to spec

Specifications

Good to know

• Installation, rigging and commissioning by a qualified marine technician are recommended; follow the manufacturer's pre-delivery and break-in procedures.