Toro 116-1606 PTO Clutch Replacement for Z Master Z500, Z557, Z560, Z588E | Warner 5218-209

Overview

This Toro 116-1606 PTO clutch replacement is an aftermarket electric PTO clutch for select Toro Z Master commercial mower applications, including specific Z Master Z500, Z557, Z560, and Z588E serial-number ranges.

This clutch replaces Toro 116-1606 and cross-references Warner 5218-209, Warner 5218-168, Xtreme X0708, and Stens 255-665X.

Built with a 1-1/8 inch crankshaft bore, clockwise rotation, and commercial-duty deck engagement design, this clutch is made to restore reliable blade engagement when matched to the correct Toro model, serial range, pulley geometry, wiring connector, and original clutch number.

Important fitment warning: This clutch fits specific Toro Z Master serial-number applications. Do not choose by mower model alone. Match your original clutch number, serial number, 1-1/8 inch bore, pulley diameter, clockwise rotation, and wiring connector before ordering.

Key Features

• Aftermarket electric PTO clutch replacement for listed Toro Z Master commercial mowers
• Crankshaft Bore: 1-1/8" / 1.125"
• Rotation: CW from pulley side
• Voltage: 12V DC
• Application Type: commercial mower deck engagement
• Primary Toro Number: 116-1606
• Warner Reference: 5218-209, 5218-168
• Xtreme Reference: X0708
• Stens Reference: 255-665X
• Integrated brake assembly for controlled blade stopping
• Fully assembled and ready to install

Compatible Brands & Models

This PTO clutch fits select Toro Z Master commercial mower applications. Fitment depends on serial number, original clutch number, bore size, pulley diameter, rotation, and wiring connector.

Toro Z Master Applications

• Toro Z Master Z500: serial number 280000001 to 311999999
• Toro Z Master Z557: serial number 240000001 to 260999999
• Toro Z Master Z560: serial number 270000001 to 270999999
• Toro Z Master Z588E: serial number 240000001 to 260999999

Serial number note: Do not choose this clutch by model number alone. If your original clutch is marked Toro 116-1606, Warner 5218-209, Warner 5218-168, Xtreme X0708, or Stens 255-665X, this is the correct replacement path. However, carefully match specs if relying on model information alone.

Replaces OEM Part Numbers

• Toro: 116-1606

Cross-Reference Aftermarket Numbers

• Warner: 5218-209
• Warner: 5218-168
• Xtreme: X0708
• Stens: 255-665X

What’s Included

• Complete electric PTO clutch assembly
• Factory-balanced pulley
• Pre-installed bearing assembly
• Encapsulated electromagnetic coil
• Integrated brake assembly
• Wiring lead and 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 commercial mower operators

FAQ

Does Toro 116-1606 fit a Z Master Z500?

Yes, this clutch fits select Toro Z Master Z500 applications with serial number 280000001 to 311999999. Confirm your original clutch number and specs before ordering.

Does Toro 116-1606 fit a Z Master Z557?

Yes, this clutch is listed for select Toro Z Master Z557 applications with serial number 240000001 to 260999999.

Does Toro 116-1606 fit a Z Master Z560?

Yes, this clutch is listed for select Toro Z Master Z560 applications with serial number 270000001 to 270999999.

Does Toro 116-1606 fit a Z Master Z588E?

Yes, this clutch is listed for select Toro Z Master Z588E applications with serial number 240000001 to 260999999.

Is Warner 5218-209 the same fitment as Toro 116-1606?

Warner 5218-209 is a Warner cross-reference for the Toro 116-1606 clutch path.

Is Warner 5218-168 the same fitment as Toro 116-1606?

Warner 5218-168 is commonly associated with the Toro 116-1606 clutch path and may appear in older cross-reference data.

Is Xtreme X0708 the same fitment as Toro 116-1606?

Xtreme X0708 is an aftermarket cross-reference for the Toro 116-1606 PTO clutch family.

Is Stens 255-665X the same fitment as Toro 116-1606?

Stens 255-665X is an aftermarket cross-reference associated with the Toro 116-1606 clutch path.

What bore size does Toro 116-1606 use?

This clutch uses a 1-1/8 inch bore, also written as 1.125". Confirm your crankshaft size before ordering.

What rotation does this clutch use?

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

What if my Toro PTO switch melted?

A melted PTO switch can be caused by a failing clutch coil, damaged wiring, poor connections, or excessive current draw. Inspect the clutch, PTO switch, wiring harness, and connector before installing a replacement. If the switch or harness is damaged, replace the damaged electrical parts before running 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 PTO clutch? Browse the full electric PTO clutch catalog.