103-0281 / 103-1364 PTO Clutch Replacement for Exmark Lazer Z & Toro Z Master | Warner 5218-73
103-0281 / 103-1364 PTO Clutch Replacement for Exmark Lazer Z & Toro Z Master | Warner 5218-73
Overview
This 103-0281 / 103-1364 PTO clutch replacement is an aftermarket electric clutch for select Exmark Lazer Z and Toro Z Master commercial zero-turn mowers. It is intended for applications using these OEM part numbers and the corresponding Warner 5218-73 clutch configuration.
Supported applications include select Kawasaki-powered Exmark Lazer Z models and specific Toro Z255 and Z287L configurations. Check the model and serial information below before ordering.
The aftermarket 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 supported Exmark and Toro applications
- OEM References: 103-0281 and 103-1364
- Primary Warner Reference: 5218-73
- 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 Exmark & Toro Applications
The following are selected applications associated with 103-1364 in manufacturer fitment information and parts catalogs. This is not a complete list, and the mower family name alone does not establish fitment.
Exmark Lazer Z
| Model | Serial Number Range |
|---|---|
| LZ23LKA524 | 260,000–319,999 |
| LZ23LKA604 | 260,000–319,999 |
| LZ25KA604 | 320,000–369,999 |
| LZ27LKA604 | 260,000–369,999 |
| LZ27LKA724 | 260,000–369,999 |
Exmark fitment note: Engine configuration matters. Do not extend these applications to every Lazer Z within the same serial range. Confirm that your mower’s engine-specific parts diagram calls for one of the OEM numbers listed here.
Toro Z Master
| Mower | Model Number | Serial Number Range |
|---|---|---|
| Z255 with 62-inch SFS deck | 74234 | 230006001–230999999 |
| Z287L with 62-inch SFS deck | 74213 | 230006001–230999999 |
| Z287L with 62-inch SFS deck | 74236 | 230006001–230999999 |
Toro fitment note: These entries cover specific documented production ranges. Earlier or later machines carrying the same model number must be checked against their own parts catalog.
OEM Part Number References
- Exmark / Toro: 103-0281
- Exmark / Toro: 103-1364
- Alternate number formatting: 1030281, 1031364
Manufacturer Cross-References
- Warner Electric: 5218-73
- Warner Electric: 521873
- Warner Electric: 5218-303
- Warner Electric: 5218303
Warner identifies 5218-303 as a replacement for 5218-73 and lists both OEM references above. Specifications stated for the aftermarket unit offered here should not be confused with specifications for the Warner-branded assembly.
Before You Order
Compare your original clutch with the product photos and confirm:
- The original clutch number or model-specific parts diagram matches a listed reference
- The crankshaft requires a 1-1/8-inch bore
- The bore and key arrangement match your installation
- The mower requires 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 connector and anti-rotation connection match the installation
Need help comparing your clutch? Send us your mower model, serial number, engine information, 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
Choose the optional harness extension if required for your connector arrangement. Follow your mower’s service instructions for mounting hardware, spacers, and installation order.
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 clutch replace both 103-0281 and 103-1364?
This aftermarket assembly is offered for applications using Exmark / Toro 103-0281 or 103-1364. Confirm the original clutch reference and physical configuration before ordering.
Does this fit every Exmark Lazer Z or Toro Z Master?
No. Both mower families use different clutches depending on model, serial number, engine, and deck configuration. Use the application tables as a starting point and confirm the clutch specified for your exact mower.
What is the Warner cross-reference?
The primary reference is Warner 5218-73, also written as 521873. Warner lists 5218-303 / 5218303 as its replacement.
Why do some reference specifications list a 6.3-inch pulley?
Warner lists a 6.31-inch outside diameter for its 5218-303 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. A difference in outside diameter alone does not confirm or rule out compatibility; the belt groove, pulley offset, and specified application must also match.
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 key arrangement to your original assembly.
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 belt should I use?
Use the OEM-specified belt for your exact mower and deck configuration. Supported applications use a 5/8-inch V-belt, but width alone does not determine the correct belt; length and profile must also match.
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. Include photos of the clutch label, bore, pulley, wiring connector, and anti-rotation connection.