Walter Solid Shaft Coupling 4"YX

4" Walter Solid Propeller Shaft Coupling for Yanmar Marine Transmissions.

The 4" Walter Solid Shaft Coupling (YX) for Yanmar marine transmissions is a precision-machined, heavy-duty coupling designed to deliver accurate shaft alignment and reliable power transfer in inboard propulsion systems. Manufactured to tight tolerances, this solid coupling ensures a secure connection between the transmission output flange and propeller shaft, minimizing runout, vibration, and premature drivetrain wear.

Built for durability in demanding marine environments, the Walter YX coupling provides long service life and consistent performance, making it a dependable replacement or upgrade for Yanmar-powered vessels requiring a robust, maintenance-friendly shaft connection.

Constructed from high-strength ductile iron and machined to strict marine tolerances, the Walter 4"YX 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: 1.966" x 5/32 Male
• Bolt Circle: 3.070"
• Bolt Diameter: 10mm
• Coupling Length: 2-1/4"
• # of Bolts: 4