Walter Solid Shaft Coupling 4"BX

4" Walter Solid Propeller Shaft Coupling for Borg Warner, Hurth and ZF Marine Transmissions.

The 4" Walter Solid Propeller Shaft Coupling is engineered for a rigid, high-strength connection between the propeller shaft and marine transmission. Designed for use with Borg Warner, Hurth, and ZF marine transmissions, this coupling delivers precise alignment and dependable power transfer in inboard propulsion systems.

Its one-piece solid construction provides maximum holding strength and minimizes movement under load, making it ideal for applications where durability and stability are critical. Precision-machined for accurate fitment, the 4" Walter coupling ensures consistent performance and long service life in demanding marine environments.

Constructed from high-strength ductile iron and machined to strict marine tolerances, the 4" BX ensures reliable power transfer, proper shaft alignment, and long service life in demanding inboard applications.

Coupling dimensions

• Flange Diameter: 4"
• Bore Range: 3/4" Thru 1 1/2"
• Pilot Diameter: 2 1/2 x 3/32 Male
• Bolt Circle: 3 1/4"
• Bolt Diameter: 3/8"
• Coupling Length: 2 1/4"
• # of Bolts: 4