1686880SM PTO Clutch Replacement for Scag, Snapper & Ferris | Replaces 1687746YP, 1717664SM & More

Overview

This Scag PTO clutch 1686880SM replacement also replaces OEM part numbers 1687746YP, 1720532SM, and 1717664SM. Designed for an exact OEM-spec fit on Scag, Cub Cadet, and Ferris mower platforms, this electric PTO clutch delivers smooth blade engagement, consistent torque transfer, and reliable long-term mowing performance.

Commonly used across Snapper, Scag, Ferris, and MTD-built platforms, this clutch provides dependable PTO engagement for both residential and commercial mowing applications.

Built with a 5.31-inch pulley diameter, 1-inch crankshaft bore, and CCW rotation, this clutch is engineered for reliable operation at engine speeds up to 3600 RPM. A 120 ft-lbs torque rating, encapsulated electromagnetic coil, and high-temperature bearings ensure consistent performance and long service life.

Key Features

• Direct OEM replacement electric PTO clutch assembly
• Pulley Diameter: 5.31"
• Crankshaft Size: 1"
• Rotation: CCW (counter-clockwise)
• Height: 3"
• Operating Speed: Up to 3600 RPM
• Torque Rating: 120 ft-lbs
• Encapsulated electromagnetic coil for reliable engagement
• High-temperature bearings for consistent performance
• Fully assembled and ready to install

Compatible With These Brands & Model Series

This PTO clutch fits Scag, Cub Cadet, Ferris, and MTD-built platforms using the same OEM specification.

• Scag
• Ferris
• MTD / Craftsman / Snapper / Simplicity

Common compatible models include ZTL7500, ZT7000, ZTS7500, ZTS7000, and ZTS6000 series mowers.

Fitment can vary by configuration and production year. Always confirm your part number matches one of the numbers listed below.

Replaces OEM Part Numbers

• 1686880SM, 1717664SM, 1720532SM
• 1687746YP
• B1XT0486, 462715, 462610

Aftermarket Cross-Reference Numbers

• Ogura: GT1-BS03
• Xtreme: X0651
• STENS: 255-354X, 255-783X
• Rotary: 15781
• Additional: GB88384, GB-88384

What’s Included

• Complete electric PTO clutch assembly
• Factory-balanced 5.31" pulley
• Pre-installed high-temperature bearings
• Encapsulated electromagnetic coil
• Plug-and-play wiring connector

Why Buy From PTO Direct USA?

• Fast USA shipping
• OEM-spec fitment guarantee
• 1-year warranty
• Premium PTO Direct USA product images for easy identification
• Trusted replacement supplier for homeowners and professionals

Need a different fitment? Browse the full electric PTO clutch catalog to see all available replacement options.