Yanmar SD25 Reversed Saildrive – SD25R is a saildrive propulsion unit engineered for marine installations that require a reversed rotation configuration within Yanmar saildrive systems. It functions as the underwater transmission component, transferring power from a compatible Yanmar diesel engine to the propeller while accommodating specific installation layouts where standard rotation is not suitable. This unit is intended for diesel-powered sailboats and auxiliary marine vessels requiring a reversed saildrive arrangement.
The SD25R is compatible with Yanmar SD25 saildrive configurations used with select small to mid-range Yanmar diesel engines, depending on vessel design and drivetrain requirements. As an OEM Yanmar marine propulsion component, it integrates with appropriate adaptor plates, engine beds, and mounting hardware when installed according to manufacturer specifications. The reversed configuration supports correct propeller rotation and drivetrain alignment in installations with space, shaft direction, or hull design constraints.
This Yanmar SD25 reversed saildrive is typically used for replacement of existing reversed units, repower projects requiring a reversed saildrive transmission, or new marine installations where a Yanmar saildrive for diesel marine engines must match a specific drivetrain orientation.
