Buck Algonquin Shaft Coupling 50-401S

4" Buck Algonquin Split Propeller Shaft Coupling for Borg Warner and Hurth Marine Transmissions.

The Buck Algonquin 50-401S Split Propeller Shaft Coupling is a heavy-duty, precision-machined marine coupling designed for use with Borg Warner and Hurth marine transmissions. Built for strength and accuracy, it ensures proper shaft alignment and secure power transfer in inboard propulsion systems.

Constructed from high-strength ductile iron, the 50-401S is built to handle demanding marine environments while maintaining proper shaft alignment and efficient power transfer. The split coupling design allows for easier installation and removal without requiring shaft withdrawal, significantly reducing maintenance time and simplifying service procedures.

Coupling dimensions

• Flange Diameter: 4"
• Bore Range: 3/4" Thru 1-1/4"
• Pilot Diameter: 2-1/2 x 3/32 Male
• Bolt Circle: 3-1/4"
• Bolt Diameter: 3/8"
• Coupling Length: 2"
• Bolts: 4 (New flange bolts included)