103-0662 PTO Clutch Replacement for Toro Z Master & Exmark Turf Tracer | Replaces 103-0660, 103-0661, 103-0500 & more

Overview

This Toro PTO clutch 103-0662 replacement also replaces OEM part numbers 103-0660, 103-0661, and 103-0500. Designed for an exact OEM-spec fit on Toro Z Master and Exmark commercial mower platforms, this electric PTO clutch restores smooth blade engagement, consistent torque transfer, and reliable long-term mowing performance.

Commonly used on Toro Z Master and Exmark commercial walk-behind mower platforms, this clutch provides dependable PTO engagement for demanding commercial mowing applications.

Built with a 6.10-inch pulley diameter, 1-inch crankshaft bore, and CW rotation, this clutch is engineered for reliable operation at engine speeds up to 3600 RPM. High-temperature sealed bearings and an encapsulated electromagnetic coil help protect the assembly from heat, vibration, and debris during heavy-duty mowing conditions.

Key Features

• Direct OEM replacement electric PTO clutch assembly
• Pulley Diameter: 6.10 inches
• Crankshaft Size: 1 inch
• Rotation: CW (clockwise)
• Operating Speed: Up to 3600 RPM
• High-temperature sealed bearings for consistent operation
• Encapsulated electromagnetic coil for reliable engagement
• Designed for stable performance under load
• Fully assembled and ready to install

Compatible With These Brands & Model Series

This PTO clutch fits Toro and Exmark commercial mower platforms using the same OEM specification.

• Exmark Turf Tracer X-Series: Hydro ECS walk-behind models including 60" configurations
• Toro Z Master Series: Z200 series including Z252 and Z253 with 52" and 62" SFS decks
• Toro Walk-Behind Mowers: Whirlwind 21 and Whirlwind II 21 Deluxe

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

Replaces OEM Part Numbers

• Toro / Exmark: 103-0662, 103-0660, 103-0661, 103-0500
• 1-631731, 1-631644, 631644, 633098
• E631731, E631644
• 1-641213, 1-634541, 1-634311, 1-633098, 1-631801, 1-611248

Aftermarket Cross-Reference Numbers

• STENS: 255-399

What’s Included

• Complete electric PTO clutch assembly
• Factory-balanced 6.10" 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 commercial operators and professionals

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