Yanmar KM4A2 Marine Gearbox for JH4-TE/JH4-HTE, 2.14:1 Reduction (KM4A2S)

The Yanmar KM4A2S is a compact KM4A2 marine reduction gearbox with a 2.14 ratio for Yanmar JH4-TE and JH4-HTE diesel engines. It transfers engine output to the propeller shaft in inboard installations on sailboats and auxiliary powerboats.

This OEM Yanmar gearbox suits JH4-TE and JH4-HTE engines specified for KM4A-series transmissions. Fitted per the manufacturer's specifications, it connects to approved engine mounts, controls and shafting with no modification required, and the drivetrain stays accurately aligned. Typical uses are replacing an existing transmission, repowering with a compatible JH4 engine and new inboard diesel installations.

Highlights

• Yanmar KM4A2 compact reduction gearbox

• 2.14:1 reduction ratio

• For Yanmar JH4-TE and JH4-HTE diesel engines

• Part number KM4A2S

• 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.