Buck Algonquin Shaft Coupling 50-MC4020

4" Buck Algonquin Solid Propeller Shaft Coupling for Paragon Marine Transmissions.

The Buck Algonquin 50-MC4020 Solid Shaft Coupling is engineered for Paragon marine transmissions, providing a rigid and dependable connection between the transmission output flange and propeller shaft. With a 4" flange diameter, this coupling is ideal for smaller inboard applications requiring precise alignment and efficient power transfer.

Its solid one-piece construction ensures maximum holding strength and minimal flex, making it well-suited for permanent installations where long-term reliability is critical. Precision machining helps reduce vibration and maintain smooth drivetrain operation under load.

Constructed from high-strength ductile iron and machined to strict marine tolerances, the 50-MC4020 ensures reliable power transfer, proper shaft alignment, and long service life in demanding inboard applications.

Coupling dimensions

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