Yamaha 68N-45593-00-94 Coupler Flange Assembly

Description:

The Yamaha 68N-45593-00-94 Coupler Flange is a drivetrain coupling component used in marine engine propulsion systems. Commonly installed in Yamaha WaveRunner and jet boat models to connect the engine crankshaft to the driveshaft assembly. Maintenance teams and marine technicians use this part for repair, replacement, and restoration of worn or damaged driveline couplers.

Applications:

The Yamaha 68N-45593-00-94 Coupler Flange is used in Yamaha marine propulsion systems where torque transfer between the engine and jet pump driveshaft is critical. It is commonly found in Yamaha WaveRunner models such as GP800, GP1200, XLT1200, and GP1300R, forming part of the PTO coupling assembly that links engine output to the driveline. This component ensures proper alignment and efficient power transmission under high-load marine conditions.

Technical Specifications:

• Brand: Yamaha
• Part Number: 68N-45593-00-94
• Product Type: Coupler flange / drive coupling flange
• Function: Transfers engine torque to driveshaft assembly
• Application: Marine propulsion / PTO driveline system
• Fitment: Yamaha WaveRunner models (800cc–1300cc range, model-specific)
• Mounting Location: Engine output shaft to driveshaft coupling interface
• Design: Multi-finger coupling flange (typically 24mm interface)
• Material: Hardened steel or alloy for high torque durability
• System Role: Maintains alignment and absorbs drivetrain load
• OEM Status: Genuine Yamaha replacement component

Common Replacements:

• Yamaha 6D3-45593-00-94
• Yamaha 6S5-45593-00-00
• Yamaha 66E-45813-00-94