4" YS Yanmar Split Shaft Coupler by Buck Algonquin - 30mm bore - 10mm Bolts - 8mm Keyway(50400YS30MM)

 Fits Yanmar marine transmissions.

• 4" flange diameter
• 8mm keyway
• 3.070" bolt circle
• 4 x 10mm" bolts
• 1.966" male pilot ring
• 2" length
• Comes with pinch bolts, flange bolts and set screw
• Cross reference:  Walter 4YS
•  Model # 50400YS30MM

Note: Coupler finish may be either gray paint or gold zinc plating.

All couplers must be fit and faced to the propeller shaft.

Can't find what you are looking for or have questions?  Call 800-634-8318 or e-mail.