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

Overview

This TCA19813 PTO clutch replacement is designed for select John Deere commercial ZTrak zero-turn mower platforms, including John Deere Z820A models with 48-inch and 54-inch decks. It replaces OEM part number TCA16998 and cross-references with Warner 5218-245.

Built for commercial mower deck engagement, this electric PTO clutch delivers strong torque transfer, smooth blade activation, and dependable belt drive performance when matched to the correct deck size, serial range, and original clutch number.

This clutch uses a 1-1/8 inch crankshaft bore, approximately 6.85-inch pulley diameter, and CCW rotation from pulley side. It is commonly used on John Deere ZTrak platforms requiring a heavy-duty Warner-style electric clutch with an integrated brake and 2-pin pigtail connection.

Important fitment warning: 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. Always confirm your deck size and original clutch number before ordering.

Key Features

• Direct replacement electric PTO clutch for listed John Deere ZTrak applications
• Replaces John Deere: TCA19813, TCA16998
• Warner reference: 5218-245
• Crankshaft Bore: 1-1/8"
• Pulley Diameter: approximately 6.85" / 6-7/8"
• Rotation: CCW from pulley side
• Voltage: 12V DC
• Belt Compatibility: commonly used with 1/2-inch or 5/8-inch belt profiles
• Integrated brake function for controlled blade stopping
• Built for commercial zero-turn mower deck engagement
• Fully assembled and ready to install

Compatible Brands & Models

This PTO clutch fits select John Deere commercial ZTrak zero-turn mower applications. Fitment depends on deck size, serial range, and original clutch number.

Confirmed John Deere Z820A Applications

• John Deere Z820A: 48-inch deck
• John Deere Z820A: 54-inch deck

Do not use this clutch on John Deere Z820A 60-inch deck applications. The 60-inch deck uses a different clutch family, commonly associated with TCA20380 and TCA16999.

Other Common John Deere ZTrak Applications

• John Deere Z510A: select 48-inch and 54-inch deck applications
• John Deere Z520A: select 60-inch Estate ZTrak deck applications
• John Deere Z710A: selected applications
• John Deere Z720A: selected applications
• John Deere Z810A: 48-inch and 54-inch deck applications
• John Deere Z910A: 48-inch and 54-inch deck applications up to serial number 020000
• John Deere Z920A: 48-inch and 54-inch deck applications up to serial number 020000
• John Deere Z925A: 48-inch and 54-inch deck applications up to serial number 020000

Serial number note: Some Z900A applications changed clutch families after serial number 020000. Check the PIN plate on your mower and confirm the original clutch number before ordering.

Replaces OEM Part Numbers

• John Deere: TCA19813
• John Deere: TCA16998

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

Cross-Reference Aftermarket Numbers

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

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

What’s Included

• Complete electric PTO clutch assembly
• Factory-balanced pulley
• Pre-installed high-temperature bearing assembly
• Encapsulated electromagnetic coil
• Integrated brake assembly
  

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 belt is misrouted, an idler is seized, a spindle is dragging, or the anti-rotation bracket is damaged.

• Confirm your deck size before ordering, especially on John Deere Z820A models
• Inspect the anti-rotation bracket or frame flange 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.

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 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.

What pulley size does TCA19813 use?

The verified pulley diameter is approximately 6.85 inches, also commonly listed as 6-7/8 inches. Be cautious of listings showing a 6.36-inch pulley for this part number, as that may indicate a different clutch family.

What bore size does this clutch use?

This clutch uses a 1-1/8 inch crankshaft bore.

Does this clutch fit Z920A?

It may fit selected John Deere Z920A models with 48-inch or 54-inch decks up to serial number 020000. Later Z920A units may use a different clutch family, so confirm your serial number and original clutch number before ordering.

What should I check before replacing the PTO clutch?

Check the deck size, 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.