TCA12522 PTO Clutch Replacement for John Deere ZTrak 737, 757, 777, 797 | Warner 5218-91
TCA12522 PTO Clutch Replacement for John Deere ZTrak 737, 757, 777, 797 | Warner 5218-91
Overview
This TCA12522 PTO clutch replacement is an aftermarket electric clutch for select John Deere commercial ZTrak mowers. It is intended for applications specifying John Deere TCA12522, including compatible 737, 757, 777, 797, M653, M655, and M665 configurations.
This clutch cross-references Warner 5218-91 and Warner 5218-307. 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.
John Deere used different clutches across these mower families. Match your original clutch number or look up using the parts diagram for your mower’s model and serial number before ordering.
Key Features
- Aftermarket electric PTO clutch replacement for select John Deere commercial ZTrak applications
- Primary OEM Reference: John Deere TCA12522
- Manufacturer Cross-References: Warner 5218-91 and 5218-307
- 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 John Deere Applications
This replacement is intended for configurations of the following mower models that specify TCA12522:
John Deere 700-Series ZTrak
- John Deere 737
- John Deere 757
- John Deere 777
- John Deere 797
John Deere M-Series Mid-Mount ZTrak
- John Deere M653
- John Deere M655
- John Deere M665
Serial-number note: These model names identify mower families, not universal fitment. Confirm the clutch specified for your complete model and serial number/PIN, especially if the engine or clutch has previously been replaced.
OEM Part Number Reference
- John Deere: TCA12522
Manufacturer Cross-References
- Warner Electric: 5218-91
- Warner Electric: 521891
- Warner Electric: 5218-307
- Warner Electric: 5218307
Warner identifies 5218-307 as a replacement for 5218-91 and lists TCA12522 as the corresponding manufacturer part number.
Before You Order
Compare your original clutch with the product photos and confirm:
- The original clutch number or mower parts diagram specifies TCA12522
- The crankshaft requires a 1-1/8-inch bore
- The bore, key arrangement, and mounting spacers match your 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
Need help comparing your clutch? Send us the mower model, serial number/PIN, 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 John Deere TCA12522?
Yes. This aftermarket clutch is offered as a replacement for John Deere TCA12522 on supported applications. Match the original clutch number and physical configuration before ordering.
Does this fit a John Deere 737, 757, 777, or 797?
It fits compatible configurations specifying TCA12522. These mower models used different clutch configurations during production, so the model name alone is not enough to confirm fitment. Check your original clutch number and the parts diagram for your mower’s serial number/PIN.
Does this fit John Deere M653, M655, and M665 mowers?
Yes, this replacement is intended for M653, M655, and M665 Mid-Mount ZTrak applications specifying TCA12522. Compare the original clutch, mounting arrangement, and connector before ordering.
Does this replace Warner 5218-91 and 5218-307?
Yes. Both numbers are associated with the TCA12522 application. Warner identifies 5218-307 as a replacement for the earlier 5218-91.
Why do some reference specifications list a 6.3-inch pulley?
Warner lists a 6.31-inch outside diameter for its 5218-307 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. The belt groove and pulley alignment must also match the application. 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 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. 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/PIN, engine information, and original clutch number. Photos of the clutch label, bore, pulley, connector, and anti-rotation connection help us compare the installation.