110-6766 PTO Clutch for Toro Exmark | Replaces 103-9950, 5219-81 & more
110-6766 PTO Clutch for Toro Exmark | Replaces 103-9950, 5219-81 & more
Overview
This Toro / Exmark 110-6766 PTO clutch replacement is an aftermarket electric PTO clutch for select Toro TimeCutter, Toro Titan, and Exmark Quest zero-turn mower applications using the listed clutch replacement numbers.
Replacement references include 110-6766, 103-9950, 100-6059, 108-9510, 108-9511, and 107-1733, along with Warner 5219-81 and 5219-57.
This replacement is supplied with a 6-inch pulley, 1-inch crankshaft bore, CCW rotation, 125 ft-lb torque rating, and an integral electrical connector. Match your original clutch number and compare the pulley, bore, connector, mounting arrangement, and available clearance before ordering.
Key Features
- Aftermarket electric PTO clutch assembly for listed Toro and Exmark applications
- Pulley Diameter: 6" / 6.00"
- Crankshaft Bore: 1" / 1.000"
- Rotation: CCW — counter-clockwise
- Voltage: 12V DC
- Torque Rating: 125 ft-lbs
- Belt Width Compatibility: 1/2" or 5/8" A/B belt profile
- Connector Style: integral connector at the clutch
- Fully assembled replacement clutch
Compatible Brands & Model References
The following model references apply to select machines using the 110-6766 clutch family. Confirm the complete mower model number, serial number, and original clutch reference before selecting a replacement.
Toro TimeCutter
- SS5000: select 50-inch deck applications
- SS5060: select 50-inch deck applications
- ZS5000: select 50-inch deck applications
- Z5020, Z5030, Z5035, Z5040 & Z5060: select 50-inch deck applications
- G4000: select early applications using the listed clutch references
Toro Titan
- Z4800: select 48-inch deck applications
- Z5200: select 52-inch deck applications
- ZX5000: select 50-inch deck applications
- ZX5020: select 50-inch deck applications
Exmark Quest
- QST22BE482: 48-inch deck, serial 670000–919999
- QST24BE522: 52-inch deck, serial 670000–919999
- QT24KA501: 50-inch deck, serial 920000–999999
- QTE691KA501 E-Series: 50-inch deck, serial 313000000–313999999
Model names are a starting point: Clutch selection can vary with the engine package, deck configuration, serial range, crankshaft size, and wiring arrangement. Use the OEM parts diagram for your complete model and serial number to confirm the clutch reference.
Replaces OEM Part Numbers
- Toro / Exmark: 110-6766, 103-9950, 100-6059, 108-9510, 108-9511, 107-1733
Manufacturer & Aftermarket Cross References
- Warner Electric: 5219-81, 5219-57
- Stens: 255-823
- Xtreme: X0379
Common number formats: Toro / Exmark 1106766, Warner 521981, Warner 521957, and Stens 255823.
Fitment Notes
This listing supplies an aftermarket replacement with a 6.00-inch pulley, 1-inch crankshaft bore, CCW rotation, and 125 ft-lb torque rating. These specifications describe the replacement sold here; compare them with your original assembly and mower installation.
What’s Included
- Complete electric PTO clutch assembly
- 6-inch pulley
- Pre-installed bearing assembly
- Electromagnetic coil
- Mounting hardware: Keyed clutch bushing and flat retaining washer for different crankshaft configurations. See our PTO clutch installation guide for selecting and positioning the appropriate hardware.
- Electrical connection: Flat, side-by-side connector at the clutch, with an optional extension harness for a T-plug connection.
Installation note: Use the bushing or washer arrangement specified for your application. These components are not normally installed together.
How to Confirm Fitment
- Find the original clutch number. Check the clutch label or stamping for an OEM or Warner reference.
- Confirm the mower model and serial number. Use the matching OEM parts diagram when the original clutch number is missing or unreadable.
- Compare the physical specifications. Check the 1-inch crankshaft bore, supplied 6-inch pulley, rotation, belt profile, and electrical connector.
- Check the mounting arrangement. Compare the anti-rotation bracket, pulley alignment, and available installation clearance.
Need help? Send your mower model number, serial number, original clutch number, and clear photos of the clutch, connector, and mounting area through our fitment support page.
Why Buy From PTO Direct USA?
Text a Photo. Get Parts Help.
Send a clear photo of your mower model and serial tag, original clutch number, or wiring connector to 541-361-8778. We help check OEM parts diagrams and replacement references so you can choose the right clutch for your machine.
- Fitment Guarantee: Support for the replacement specifications listed on this page. Read our Fitment Guarantee for eligibility and full terms.
- Fast USA shipping: Tracking is emailed when your order ships. See our shipping policy for processing and delivery estimates.
- Photos that help you compare: Check the pulley, connector, housing, and mounting details against your original clutch.
- Help preparing for installation: Our PTO clutch installation guide covers mounting hardware, electrical connections, and fitment checks.
- A direct contact for your order: Reach PTO Direct USA for product questions, fitment help, and support after delivery.
Fitment support before and after purchase.
Need a different clutch? Browse the Toro PTO clutch collection, Exmark PTO clutch collection, or the full electric PTO clutch catalog.
Related reference: Read our Warner 5219-81 PTO Clutch Cross-Reference Guide.