103-0665 / 103-0501 PTO Clutch Replacement for Toro Z-Master & Exmark Lazer Z | Warner 5218-213
$178.95
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103-0665 / 103-0501 PTO Clutch Replacement for Toro Z-Master & Exmark Lazer Z | Warner 5218-213
$178.95
Overview
This 103-0665 PTO clutch replacement is an aftermarket electric clutch for select Toro Z-Master and Exmark Lazer Z commercial zero-turn mowers. It is offered for supported applications referencing 103-0665, 103-0501, 1-631732, or 1-641300.
The assembly features a 1-1/8-inch crankshaft bore, single-groove pulley measuring approximately 6-1/8 inches outside diameter, clockwise rotation viewed from the pulley side, and a reverse-mount configuration.
Key Features
- Aftermarket electric PTO clutch replacement for select Toro Z-Master and Exmark Lazer Z applications
- Primary OEM Reference: 103-0665
- Related OEM References: 103-0501, 1-631732, 1-641300
- Manufacturer Cross-Reference: Warner 5218-213; earlier Warner 5218-65
- Crankshaft Bore: 1-1/8 inches / 1.125 inches
- Measured Pulley Outside Diameter: approximately 6-1/8 inches / 6.125 inches
- Pulley Type: single-groove V-belt pulley
- Belt Width: 5/8-inch belt on supported applications; use the OEM-specified belt for your mower
- Rotation: clockwise (CW), viewed from the pulley side
- Mounting Style: reverse mount
- Voltage: 12V DC
- Connector: flat side-by-side at clutch or optional wire harness to extend to T-plug
- Integrated electromagnetic clutch and brake assembly
Compatible Toro & Exmark Applications
This replacement is intended for mower configurations specifying one of the OEM clutch numbers listed below.
- Toro Z-Master: select commercial zero-turn applications using the listed clutch configuration
- Exmark Lazer Z: select commercial zero-turn applications using the listed clutch configuration
Both mower families include different engine packages, crankshaft sizes, deck configurations, and PTO clutches. Confirm the original clutch number or consult the parts diagram for your complete mower model and serial number.
OEM Part Number References
- Toro / Exmark: 103-0665, 103-0501, 1-631732, 1-641300
- Additional catalog references: 631732, 641300, E631732
Manufacturer Cross-Reference
- Warner Electric: 5218-213
- Warner Electric: 5218213
- Earlier Warner Electric: 5218-65
- Earlier Warner Electric: 521865
Before You Order
Compare your original clutch with the product photos and confirm:
- The original clutch number matches a supported reference listed above
- The crankshaft requires a 1-1/8-inch bore
- The bore, drive bushing, and key arrangement match your original installation
- The mower uses a single-groove, reverse-mount clutch
- Rotation is CW when viewed from the pulley side
- The belt groove, pulley offset, and mounting height suit your mower
- The electrical connector and anti-rotation connection match the installation
- The correct mounting hardware and spacer arrangement are available
Need help comparing your clutch? Send us the mower model, serial number, original clutch number, and clear photos before ordering.
What’s Included
- Complete aftermarket electric PTO clutch assembly
- Integrated single-groove pulley
- Pre-installed bearing assembly
- Electromagnetic coil and brake assembly
- Flat side-by-side clutch connector
- Optional wire harness extension
Why Buy From PTO Direct USA?
- Fast USA shipping
- Fitment Guarantee
- Fitment support before and after purchase
- Clear product photos for easier clutch identification
- Support for homeowners, commercial operators, and mower repair professionals
FAQ
Does this PTO clutch replace Toro or Exmark 103-0665?
Yes. This aftermarket clutch is offered as a replacement for 103-0665 on supported Toro and Exmark applications. Match your original clutch number and physical configuration before ordering.
Does this also replace 103-0501, 1-631732, and 1-641300?
These numbers are included in the replacement references for this listing. Confirm the original clutch number, bore, drive bushing, connector, and mounting arrangement for your mower.
Does this fit every Toro Z-Master or Exmark Lazer Z?
No. These mower families use multiple clutch configurations. Your mower’s complete model, serial number, engine configuration, and original clutch number determine the correct replacement.
Does Warner 5218-213 replace Warner 5218-65?
Yes. Warner identifies 5218-213 as the replacement for 5218-65. Both numbers are included here to help identify supported applications.
Why do some reference specifications list a 6.3-inch pulley?
Warner lists a 6.31-inch outside diameter for its 5218-213 clutch. The aftermarket unit offered here has a measured outside diameter of approximately 6.125 inches.
Outside diameter and the working diameter where the belt rides are different measurements. For belt speed, the critical measurement is that working diameter—not the outer flange edge. This aftermarket clutch is designed to replace the OEM and manufacturer part numbers listed here.
What bore size does this clutch use?
This clutch has a 1-1/8-inch crankshaft bore, also written as 1.125 inches. Match the bore and drive-bushing arrangement to your original installation.
Is this a reverse-mount clutch?
Yes. This replacement uses a reverse-mount configuration. Follow the mounting orientation and spacer arrangement specified for your mower. Product-photo orientation is not an installation diagram.
What connector does this clutch use?
The clutch has a flat side-by-side connector, with an optional wire harness extension to a T-plug. Compare your mower’s wiring connection before selecting the harness option.
What belt should I use?
Use the OEM-specified belt for your exact mower and deck configuration. Supported applications commonly use a 5/8-inch V-belt. Belt width, length, and profile must suit the complete drive system.
Can PTO Direct USA help confirm fitment?
Yes. We provide fitment support before and after purchase. Email support@ptodirectusa.com with your mower model, serial number, engine information, and original clutch number. Photos of the clutch label, bore, drive bushing, pulley, connector, and anti-rotation connection help us compare the installation.