TCA21167 PTO Clutch Replacement for John Deere ZTrak | Replaces TCA20604, Warner 5218-271

Overview

This aftermarket TCA21167 electric PTO clutch replacement is built for select John Deere ZTrak commercial zero-turn mower applications using the TCA21167 / TCA20604 / Warner 5218-271 clutch path. It is designed to restore mower deck engagement, transfer power from the engine crankshaft to the deck belt, and support reliable blade engagement under normal mowing conditions.

Important Z720A serial-number note: This clutch fits John Deere Z720A models with serial number 020001 and higher. If your Z720A serial number is 020000 or below, use the TCA19813 PTO clutch replacement instead.

This clutch is also used on select late-serial John Deere Z910A, Z920A, and Z925A commercial ZTrak applications, depending on serial number and deck configuration. Fitment can vary by mower serial number, deck size, belt path, connector style, anti-rotation setup, and original clutch number.

Do not order by model number alone. Always confirm the original PTO clutch number, mower serial number, crankshaft bore, pulley diameter, wiring connector, belt path, and product photos before ordering.

Key Features

• Aftermarket electric PTO clutch replacement for select John Deere ZTrak applications
• Replaces John Deere: TCA21167, TCA20604
• Crankshaft Bore: 1-1/8 inch / 1.125 inch
• Pulley Diameter: 6.61 inch class / 6-5/8 inch class
• Rotation: CCW, counter-clockwise
• Voltage: 12V electric PTO clutch
• Designed for select commercial John Deere ZTrak mower platforms
• Helps restore proper mower deck engagement
• Fully assembled replacement clutch unit

Compatible Brands & Models

This PTO clutch fits select John Deere ZTrak commercial zero-turn mower platforms using the TCA21167 / TCA20604 / Warner 5218-271 clutch path.

• John Deere Z720A: serial number 020001 and higher
• John Deere Z910A: serial number 020001 and higher, select 48-inch and 54-inch deck applications
• John Deere Z920A: serial number 020001 and higher, select 48-inch and 54-inch deck applications
• John Deere Z925A: serial number 020001 and higher, select 54-inch MOD deck applications

Do not use this clutch for John Deere Z710A. Z710A applications commonly use a different clutch path, including TCA21168, and should not be merged with this TCA21167 listing.

For John Deere Z720A owners, see the John Deere Z720A parts guide to compare the TCA21167 late-serial path against the TCA19813 early-serial path.

Replaces OEM Part Numbers

• John Deere: TCA21167, TCA20604

Cross-Reference Aftermarket Numbers

• Warner: 5218-271, 5218-401
• Xtreme: X0269, X0269-K
• Stens: 255-155, 255-155X
• Oregon: 33-277
• 8TEN: 810-CPT2376O

Important Exclusions

• Do not use for John Deere Z710A: Z710A applications commonly use the TCA21168 clutch path.
• Do not use for early Z720A serial numbers: Z720A serial number 020000 and below uses the TCA19813 clutch path.
• Do not merge with TCA19813: TCA19813 and TCA21167 are separated by serial number and are not universal substitutes.
• Do not merge with TCA22879 / X0807: those belong to heavier-duty clutch paths used on select larger ZTrak applications.

What’s Included

• Complete electric PTO clutch assembly
• Integrated pulley
• Electromagnetic clutch coil
• Pre-installed bearing assembly
• Wiring connector, as shown in product photos

Why Buy From PTO Direct USA?

• Fast USA shipping
• OEM-spec fitment guarantee
• 1-year warranty
• Clear product images for easier identification
• Support for confirming PTO clutch fitment before ordering

FAQ

Does this PTO clutch fit the John Deere Z720A?

This clutch fits John Deere Z720A mowers with serial number 020001 and higher using the TCA21167 / TCA20604 / Warner 5218-271 clutch path. Earlier Z720A mowers with serial number 020000 and below use the TCA19813 PTO clutch replacement instead.

Are TCA21167 and TCA19813 interchangeable?

No. Both can appear in Z720A fitment searches, but they belong to different serial-number paths. TCA21167 is the later Z720A path for serial number 020001 and higher. TCA19813 is the earlier Z720A path for serial number 020000 and below.

Does this PTO clutch fit the John Deere Z710A?

No. Do not use this TCA21167 listing for John Deere Z710A applications. Z710A mowers commonly use a different clutch path, including TCA21168. Always confirm your original clutch number before ordering.

What does TCA21167 replace?

This aftermarket replacement clutch replaces John Deere TCA21167 and TCA20604. It also cross-references Warner 5218-271 and 5218-401, with additional aftermarket references including Xtreme X0269, Stens 255-155, Oregon 33-277, and 8TEN 810-CPT2376O.

What should I check before ordering?

Confirm the original clutch number, mower serial number, deck size, crankshaft bore, pulley diameter, connector style, belt routing, and anti-rotation setup. On Z720A models, the serial number is especially important because the PTO clutch and deck belt path changed at the 020000 / 020001 split.

Why does my PTO clutch click but the blades do not spin?

If the clutch clicks but the blades do not spin, inspect the deck belt, belt routing, idlers, spindle bearings, deck obstruction, and clutch output. For deeper diagnosis, see the PTO clutch clicks but blades won’t spin guide.

What if my old PTO clutch is stuck on the crankshaft?

Rust, burrs, keyway binding, or seized hardware can make an old clutch difficult to remove. Do not hammer or pry aggressively against the clutch. Use the PTO clutch stuck on crankshaft guide before removal.

Need the early Z720A clutch path? If your John Deere Z720A serial number is 020000 or below, use the TCA19813 PTO clutch replacement.

Need help confirming fitment? Email support@ptodirectusa.com with your mower model, serial number, deck size, original clutch number, and clear photos of the old clutch, connector, pulley, anti-rotation setup, and deck belt routing.