AM136787 PTO Clutch Replacement for John Deere Z225, Z425, Z445, Z465 | Replaces Warner 5219-88

Overview

This aftermarket AM136787 electric PTO clutch replacement is built for select John Deere EZtrak Z225, Z425, Z445, and Z465 zero-turn mower applications using the AM136787 / AM137323 / Warner 5219-88 / X0384 clutch path.

This clutch replaces John Deere AM136787 and AM137323. It also cross-references Warner 5219-88, Warner 5219-225, Xtreme X0384, X0384-K, Stens 255-152, 255-152X, and Rotary 15206 when the original clutch number and physical specifications match this listing.

Built with a 1-inch crankshaft bore, 5-1/2 inch pulley class, single pulley, CCW rotation from pulley side, and an integrated pigtail / connector style as shown in the product photos, this PTO clutch is designed to restore reliable mower deck blade engagement on compatible John Deere EZtrak zero-turn applications.

Important fitment note: John Deere EZtrak fitment can vary by serial number. This page is for the AM136787 / Warner 5219-88 / X0384 clutch path. Always confirm your mower model, serial number, original clutch number, crankshaft bore, pulley diameter, belt width, rotation, connector style, anti-rotation setup, and product photos before ordering.

Key Features

• Aftermarket electric PTO clutch replacement for the John Deere AM136787 clutch path
• Crankshaft Bore: 1" / 1.000"
• Pulley Diameter: 5-1/2" class / around 5.5" to 5.625"
• Pulley Type: single pulley
• Rotation: CCW / counter-clockwise from pulley side
• Voltage: 12V electric PTO clutch
• Belt Width: 1/2" or 5/8" belt compatibility on supported applications
• Torque Rating: 125 ft-lbs
• Connector Style: integrated pigtail / connector style as shown in product photos
• Pre-assembled clutch and pulley unit for direct replacement installation after fitment verification
• Designed for mower deck drive engagement on compatible John Deere EZtrak zero-turn mowers

Compatible Brands & Models

This PTO clutch fits select John Deere EZtrak zero-turn mower applications using the AM136787 / AM137323 / Warner 5219-88 / X0384 replacement path. Fitment depends on mower model, serial number, original clutch number, deck configuration, crankshaft bore, pulley diameter, belt width, connector style, and anti-rotation setup.

John Deere EZtrak Applications

• John Deere Z225: serial numbers 0 through 100001
• John Deere Z425: serial numbers 040001 through 100000
• John Deere Z445: serial numbers 040001 through 100000
• John Deere Z465: all models using the AM136787 / Warner 5219-88 clutch path

Serial number warning: John Deere Z425 and Z445 applications are split by serial range. This listing is for the later AM136787 / Warner 5219-88 path used on Z425 and Z445 models with serial numbers 040001 through 100000. If your Z425 or Z445 serial number is 040000 or lower, verify carefully before ordering because those machines commonly use the AM141536 / Warner 5219-127 clutch path instead.

Fitment reminder: Do not order by mower model alone. If possible confirm that your original clutch is marked with AM136787, AM137323, 5219-88, 5219-225, X0384, or 255-152 before ordering.

Replaces OEM Part Numbers

John Deere: AM136787, AM137323

Cross-Reference Aftermarket Numbers

• Warner: 5219-88, 521988
• Warner: 5219-225, 5219225
• Xtreme: X0384, X0384-K
• Stens: 255-152, 255-152X
• Rotary: 15206

What’s Included

• Complete electric PTO clutch assembly
• Integrated single pulley
• Pre-installed bearing assembly
• Encapsulated electromagnetic coil
• Integrated pigtail / connector style 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 this PTO clutch replace John Deere AM136787?

Yes. This aftermarket PTO clutch replaces John Deere AM136787 on compatible John Deere EZtrak zero-turn mower applications using the same clutch path.

Does this replace John Deere AM137323?

Yes. This clutch is commonly associated with John Deere AM137323 when the original clutch number, serial range, and physical specifications match this listing.

Does this replace Warner 5219-88?

Yes. This PTO clutch cross-references Warner 5219-88 and 521988 on compatible John Deere EZtrak applications.

Does this replace Warner 5219-225?

Yes. This listing includes Warner 5219-225 in the AM136787 / AM137323 clutch path. Confirm your original clutch number and product photos before ordering.

Does this replace Xtreme X0384?

Yes. This listing cross-references Xtreme X0384 and X0384-K for compatible AM136787 applications.

Does this replace Stens 255-152?

Yes. This listing cross-references Stens 255-152 and 255-152X when matched to the John Deere AM136787 / Warner 5219-88 clutch path.

Does this fit John Deere Z225?

Yes, this clutch fits select John Deere Z225 EZtrak applications with serial numbers 0 through 100001 using the AM136787 / Warner 5219-88 clutch path. Confirm your serial number and original clutch number before ordering.

Does this fit John Deere Z425?

Yes, this clutch fits select John Deere Z425 EZtrak applications with serial numbers 040001 through 100000. If your Z425 serial number is 040000 or lower, verify carefully because those applications commonly use a different clutch path.

Does this fit John Deere Z445?

Yes, this clutch fits select John Deere Z445 EZtrak applications with serial numbers 040001 through 100000. If your Z445 serial number is 040000 or lower, verify carefully because those applications commonly use a different clutch path.

Does this fit John Deere Z465?

Yes, this clutch is commonly listed for John Deere Z465 applications using the AM136787 / AM137323 / Warner 5219-88 clutch path. Match your original clutch number and product photos before ordering.

Is AM136787 the same as AM141536?

No. AM136787 and AM141536 are separate John Deere clutch paths. AM136787 is associated with the Warner 5219-88 / X0384 path, while AM141536 is associated with the Warner 5219-127 / X0383 path. Do not choose by mower model alone, especially on Z425 and Z445 machines with serial-number splits.

What if my Z425 or Z445 serial number is 040000 or lower?

If your John Deere Z425 or Z445 serial number is 040000 or lower, compare your original clutch to the AM141536 / Warner 5219-127 clutch path before ordering. This AM136787 listing is for the later Z425 / Z445 serial range.

What bore size does this PTO clutch use?

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

What pulley diameter does this PTO clutch use?

This clutch uses a 5-1/2 inch pulley class. Some catalogs list this path around 5.5 inches, while others may list it near 5-5/8 inches. Always compare the pulley size, belt profile, and product photos against your original clutch before ordering.

What rotation does this clutch use?

This clutch uses counter-clockwise rotation, commonly written as CCW, when viewed from the pulley side. Match rotation before installing a replacement PTO 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 PTO clutch 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. Include photos of the pulley, bore, wiring connector, clutch label or stamped number, and anti-rotation bracket area.

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

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