DescriptionYanmar SD60 2.23 Extended Length for JH Series Non-Turbo (S1) – SD60-5-2.23-L is a saildrive propulsion unit designed for use within Yanmar SD60 saildrive systems paired with naturally aspirated JH-series diesel engines. It serves as the underwater transmission component, transferring engine output to the propeller while supporting controlled thrust delivery in sailboat and auxiliary marine installations that require an extended-length configuration.This saildrive is configured with a 2.23 gear ratio and is intended for compatibility with non-turbo Yanmar JH-series engines used in marine propulsion applications. The extended-length design supports specific hull forms and engine layout requirements, helping maintain correct drivetrain alignment when installed in accordance with manufacturer specifications. As an OEM Yanmar marine propulsion component, it integrates with appropriate adaptor plates, engine beds, and mounting hardware within SD60 saildrive assemblies without modification in approved installations.This Yanmar SD60 saildrive is typically used for replacement of existing extended-length units, repower projects involving compatible non-turbo JH engines, or new marine installations requiring a Yanmar saildrive transmission matched to a defined installation configuration.