109-7665 PTO Clutch Replacement for Toro & Exmark | Replaces 103-3246, 103-6579, 116-1611 & More

Overview

This Toro PTO clutch 109-7665 replacement also replaces OEM part numbers 103-3246, 103-6579, 116-1611, and 103-3132. Designed for an exact OEM-spec fit on Toro and Exmark commercial mower platforms, this electric PTO clutch delivers smooth blade engagement, consistent torque transfer, and reliable long-term performance.

Commonly used on Toro Z Master and Exmark Lazer Z commercial zero-turn mowers, this clutch provides dependable PTO engagement for professional mowing applications in demanding field conditions.

Built with a 7.20-inch pulley diameter, 1-1/8 inch crankshaft bore, and CW rotation, this clutch is engineered for reliable operation at engine speeds up to 3600 RPM. A 370°F thermal auto cutoff, encapsulated electromagnetic coil, and heavy-duty bearings ensure consistent performance and long service life under load.

Key Features

• Direct OEM replacement electric PTO clutch assembly
• Pulley Diameter: 7.20 inches
• Crankshaft Size: 1-1/8 inch
• Rotation: CW (clockwise)
• Operating Speed: Up to 3600 RPM
• 370°F Thermal Auto Cutoff for overheating protection
• Encapsulated electromagnetic coil for reliable engagement
• Heavy-duty bearings for consistent commercial performance
• Fully assembled and ready to install

Compatible With These Brands & Model Series

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

• Exmark: Lazer Z Series, Lazer Z XS (Serial 600,000+), Lazer Z AS, Lazer Z EFI, Radius Series
• Toro: Z Master Z500, Z550, Z555, Z557, Z558, Z560, Z587L, Z588E
• John Deere: 648R, 652R, 652R EFI, 661R, 661R EFI (select serial ranges)
• Dixie Chopper: 3066LP, 3074LP, 3360

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

Replaces OEM Part Numbers

• 109-7665
• 103-3246
• 103-6579
• 116-1611
• 103-3132
• 109-7673
• 103-5835
• 103-4000
• 103-4057
• 109-7666
• 109-7669
• 116-1612
• 103-2453
• 103-3244
• 103-6589

Aftermarket Cross-Reference Numbers

• Warner: 5218-203, 5218-254, 5218-159, 5218-101, 5218-217, 5218-168, 5218-202, 5218-209, 5218-99
• Xtreme: X0131, X0236, X0460, X0462
• Oregon: 33-157
• STENS: 255-488, 255-727, 255-723
• Prime: 7-06293
• Rotary: 12403

What’s Included

• Complete electric PTO clutch assembly
• Factory-balanced 7.20" pulley
• Pre-installed heavy-duty 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 PDS-1 product images
• Trusted by commercial operators and professionals

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