TCA19813 PTO Clutch Replacement for John Deere Z820A, Z810A, Z910A & Z920A | Replaces TCA16998, Warner 5218-245

Overview

This aftermarket TCA19813 electric PTO clutch replacement is designed for select John Deere commercial ZTrak zero-turn mower applications using the TCA19813 / TCA16998 / Warner 5218-245 clutch path.

This clutch is commonly used on select John Deere Z820A, Z810A, Z720A, Z910A, and Z920A mower platforms when the original clutch number, serial range, deck size, and physical specifications match this listing.

Built for the 1-1/8 inch crankshaft and 6-7/8 inch pulley-class clutch path, this replacement is designed for CCW rotation from the pulley side on compatible John Deere ZTrak applications. It helps restore reliable blade engagement when the original clutch number, deck size, serial range, and belt path match this listing.

Important Z720A serial-number note: This clutch fits John Deere Z720A models with serial number 020000 and below. If your Z720A serial number is 020001 or higher, use the TCA21167 PTO clutch replacement instead.

Important Z820A deck-size note: This clutch fits John Deere Z820A mowers with 48-inch and 54-inch decks. It is not the correct clutch for Z820A models with a 60-inch deck. Z820A 60-inch deck applications commonly require the heavier TCA20380 PTO clutch family instead.

Key Features

• Aftermarket electric PTO clutch replacement for select John Deere ZTrak applications
• Replaces John Deere: TCA19813, TCA16998
• Warner reference: 5218-245, 5218-157
• Crankshaft Bore: 1-1/8 inch / 1.125 inch
• Pulley Diameter: 6-7/8 inch class / approximately 6.85 inches
• Rotation: CCW from pulley side
• Voltage: 12V electric PTO clutch
• Belt Compatibility: commonly used with 1/2-inch or 5/8-inch belt profiles on supported applications
• Integrated brake function for controlled blade stopping
• Designed for commercial zero-turn mower deck engagement
• Fully assembled replacement clutch unit

Compatible Brands & Models

This PTO clutch fits select John Deere commercial ZTrak zero-turn mower applications using the TCA19813 / TCA16998 / Warner 5218-245 clutch path. Fitment depends on deck size, serial range, and original clutch number.

High-Confidence John Deere Applications

• John Deere Z720A: serial number 020000 and below
• John Deere Z810A: select 48-inch and 54-inch deck applications
• John Deere Z820A: select 48-inch and 54-inch deck applications
• John Deere Z910A: select 48-inch and 54-inch deck applications up to serial number 020000
• John Deere Z920A: select 48-inch and 54-inch deck applications up to serial number 020000
• John Deere Z520A: select 60-inch Estate ZTrak applications

Serial number note: Some John Deere ZTrak applications changed clutch families after serial number 020000. For Z720A, Z910A, and Z920A applications, serial number 020001 and higher commonly uses the TCA21167 PTO clutch replacement path instead.

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

Important Exclusions

• Do not use for John Deere Z820A 60-inch deck applications: these commonly use the TCA20380 / TCA16999 clutch path instead.
• Do not use for late Z720A serial numbers: Z720A serial number 020001 and higher uses the TCA21167 clutch path.
• Do not use for late Z910A or Z920A serial numbers: serial number 020001 and higher commonly uses the TCA21167 clutch path.
• Do not use for John Deere Z710A: Z710A applications use a different clutch path and should not be merged with this TCA19813 listing.
• Do not use for John Deere Z510A: Z510A applications commonly use a different clutch path.
• Do not merge with TCA21167: TCA19813 and TCA21167 are separated by serial number and use different clutch dimensions.
• Do not merge with TCA20380: TCA20380 belongs to a heavier John Deere clutch path used on select 60-inch deck applications.

Replaces OEM Part Numbers

• John Deere: TCA19813, TCA16998

Supersession note: TCA19813 is commonly used as the replacement path for discontinued TCA16998 on compatible John Deere ZTrak applications.

Cross-Reference Aftermarket Numbers

• Warner: 5218-245, 5218-157
• Stens: 255-153, 255-153X
• Xtreme: X0259, X0259-K
• Oregon: 33-276
• Rotary: 15207, 10-15207
• 8TEN: 810-CPT2366O
• Prime / Niche: B1XT0259

Search note: Warner numbers may also appear without the dash, such as 5218245 or 5218157. Match the original clutch number and physical specs before ordering.

What’s Included

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

Before Installing

Before installing a new PTO clutch, inspect the mower deck drive system and clutch mounting area. A new clutch can fail early if the deck belt is misrouted, an idler is seized, a spindle is dragging, or the anti-rotation bracket is damaged.

• Confirm your mower model, serial number, and deck size before ordering
• Match the original clutch number to TCA19813, TCA16998, or Warner 5218-245
• Inspect the anti-rotation bracket or frame stop before installation
• Check the deck belt for glazing, cracking, oil contamination, or stretch
• Confirm belt routing around the clutch pulley, idlers, and spindle pulleys
• Inspect idler pulleys and blade spindles for drag, wobble, or bearing noise
• Check the wiring connector for corrosion, melting, loose terminals, or damage
• Make sure the crankshaft is clean and free of rust, burrs, or keyway damage

Anti-rotation warning: If the clutch wiring was ripped out of the old clutch, inspect the anti-rotation bracket before installing the replacement. A damaged bracket can let the clutch body spin and destroy the wiring on the new clutch.

Removal warning: If the old clutch will not slide off the crankshaft, do not hammer or pry aggressively against the clutch body. Use the PTO clutch stuck on crankshaft guide before removal.

Why Buy From PTO Direct USA?

• Fast USA shipping
• OEM-spec fitment guarantee
• 1-year warranty
• Fitment-first product support
• Clear product images for easier clutch identification
• Trusted replacement supplier for homeowners, repair shops, and commercial operators

FAQ

Does TCA19813 fit a John Deere Z820A?

Yes, but only for John Deere Z820A models with 48-inch or 54-inch decks. Z820A models with a 60-inch deck commonly require the different TCA20380 PTO clutch family.

Does TCA19813 fit a John Deere Z720A?

Yes. This clutch fits John Deere Z720A mowers with serial number 020000 and below. Later Z720A mowers with serial number 020001 and higher use the TCA21167 PTO clutch replacement instead.

Does TCA19813 replace TCA16998?

Yes. TCA19813 is commonly used as the replacement part number for TCA16998 on compatible John Deere ZTrak applications.

Is Warner 5218-245 the same as TCA19813?

Warner 5218-245 is the manufacturer reference commonly associated with the John Deere TCA19813 clutch family. Always confirm the original clutch number and physical specs before ordering.

Are TCA19813 and TCA21167 interchangeable?

No. TCA19813 and TCA21167 are separate John Deere clutch paths. On Z720A, Z910A, and Z920A applications, TCA19813 is used on earlier machines up to serial number 020000, while TCA21167 is used on many later machines with serial number 020001 and higher.

Does this PTO clutch fit John Deere Z710A?

No. Do not use this TCA19813 listing for John Deere Z710A applications. Z710A mowers use a different clutch path and should not be merged with this product.

What pulley size does TCA19813 use?

This clutch uses a 6-7/8 inch pulley class, commonly listed around 6.85 inches. Some references may describe the belt groove or pitch diameter differently, so the safest check is still the original clutch number and full physical comparison.

What bore size does this clutch use?

This clutch uses a 1-1/8 inch crankshaft bore. It will not fit a 1-inch crankshaft.

What should I check before replacing the PTO clutch?

Check the deck size, serial number, original clutch number, anti-rotation bracket, wiring connector, deck belt, idler pulleys, blade spindles, crankshaft condition, and belt routing before installing a new clutch.

Can PTO Direct USA help me confirm fitment?

Yes. Email support@ptodirectusa.com with your mower model number, serial number, deck size, OEM clutch number, and clear photos of the old clutch. For the best fitment help, include photos of the clutch label or stamped number, wiring connector, clutch pulley, anti-rotation bracket, and deck belt routing.

Need a different John Deere clutch? Browse the John Deere PTO clutch collection or the full electric PTO clutch catalog.