AM141978 PTO Clutch Replacement for John Deere Z625, Z645, Z655 | Warner 5219-126

Overview

This AM141978 PTO clutch replacement is an aftermarket electric PTO clutch for select John Deere Eztrak zero-turn mower applications, including John Deere Z625, Z645, and Z655.

This clutch replaces John Deere AM141978 and cross-references Warner 5219-126, Xtreme X0335, and Stens 255-130X.

Built with a 1-inch crankshaft bore, 6.3 inch nominal pulley diameter, counter-clockwise rotation, and pulley compatibility for 1/2 inch or 5/8 inch belts, this clutch is designed to restore reliable mower deck blade engagement when matched to the correct John Deere model, original clutch number, and physical specs.

Key Features

• Aftermarket electric PTO clutch replacement for listed John Deere Eztrak zero-turn mowers
• Crankshaft Bore: 1"
• Pulley Diameter: approximately 6.3"
• Belt Width: accepts 1/2" or 5/8" belt
• Rotation: CCW from pulley side
• Voltage: 12V DC
• Torque Rating: 125 ft-lbs
• Connector Style: integral connector as shown in product photos
• Integrated brake assembly for controlled blade stopping
• Fully assembled and ready to install

Compatible Brands & Models

This PTO clutch fits select John Deere Eztrak residential zero-turn mower applications. Fitment depends on original clutch number, crankshaft bore, pulley diameter, rotation, connector style, and anti-rotation alignment.

John Deere Eztrak Applications

• John Deere Z625
• John Deere Z645
• John Deere Z655

Fitment note: If your original clutch is marked AM141978, Warner 5219-126, Xtreme X0335, or Stens 255-130X, this is the correct replacement path. However, carefully match specs if relying on model information alone.

Replaces OEM Part Numbers

• John Deere: AM141978

Cross-Reference Aftermarket Numbers

• Warner: 5219-126, 5219126
• Xtreme: X0335
• Stens: 255-130X

What’s Included

• Complete electric PTO clutch assembly
• Factory-balanced pulley
• Pre-installed bearing assembly
• Encapsulated electromagnetic coil
• Integrated brake assembly
• Connector as shown in product photos

Why Buy From PTO Direct USA?

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

FAQ

Does AM141978 fit a John Deere Z645?

Yes, this clutch fits select John Deere Z645 Eztrak applications that use the AM141978 clutch path. Confirm the original clutch number and physical specs before ordering.

Does AM141978 fit a John Deere Z655?

Yes, this clutch fits select John Deere Z655 Eztrak applications. Match your original clutch number, 1-inch bore, pulley diameter, rotation, connector style, and anti-rotation setup before ordering.

Does AM141978 fit a John Deere Z625?

Yes, this clutch is listed for select John Deere Z625 Eztrak applications using the AM141978 clutch family.

Is Warner 5219-126 the same fitment as AM141978?

Warner 5219-126 is the Warner reference commonly associated with the John Deere AM141978 clutch path.

Is Xtreme X0335 the same fitment as AM141978?

Xtreme X0335 is an aftermarket cross-reference for the John Deere AM141978 PTO clutch family.

Is Stens 255-130X the same fitment as AM141978?

Stens 255-130X is an aftermarket cross-reference associated with the John Deere AM141978 clutch path.

What bore size does AM141978 use?

This clutch uses a 1-inch bore. Confirm your crankshaft size before ordering.

What pulley diameter does this clutch use?

This clutch is commonly listed with a 6.3 inch nominal pulley diameter. Confirm against your original clutch and product photos before ordering.

What rotation does this clutch use?

This clutch uses counter-clockwise rotation. Match rotation to your original clutch before installing a replacement.

What should I check before installing a new PTO clutch?

Inspect the PTO switch, wiring connector, battery voltage, deck belt, idler pulleys, blade spindles, anti-rotation pin or bracket, and crankshaft condition. A damaged anti-rotation setup can let the clutch body spin and tear out the wiring on the new clutch.

What are common signs of a failing PTO clutch?

Common symptoms include mower blades not engaging, the PTO clutch clicking but the blades not spinning, slipping under load, intermittent blade engagement, a burning smell, or blades slowing down after the mower heats up. A worn coil can work cold, then weaken after 10 to 30 minutes of mowing.

Can PTO Direct USA help me confirm fitment?

Yes. Email support@ptodirectusa.com with your mower model number, serial number, deck size, original 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, pulley, anti-rotation bracket, and crankshaft area.

Need installation help? Read the PTO clutch installation guide.

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