Toro 110-0449 PTO Clutch for Z Master Z500, Z528 | Warner 5218-270

Overview

This Toro 110-0449 PTO clutch replacement is an aftermarket electric PTO clutch for select Toro Z Master commercial mower applications, including Z Master Z500 and Z Master Z528 models within specific serial ranges.

This clutch replaces Toro 110-0449 and follows the Warner 5218-270 replacement path. Warner states that 5218-270 replaces the earlier 5218-141. Xtreme X0463 is another aftermarket cross-reference for this application.

The listed aftermarket clutch has a 1-1/8 inch crankshaft bore, an approximately 7.15 inch pulley, clockwise rotation from the pulley side, and a pulley designed for 1/2 inch or 5/8 inch belts. Match the original clutch number and physical configuration before ordering.

Important fitment warning: The Z Master model name alone does not confirm fitment. Check your mower serial number, original clutch label, bore, pulley profile, mounting and wiring connector.

For the part-number history and model-by-model checks, read our Toro 110-0449 PTO clutch fitment guide.

Key Features

• Aftermarket electric PTO clutch replacement for select Toro Z Master commercial mowers
• Crankshaft Bore: 1-1/8" / 1.125"
• Listed Replacement Pulley Diameter: approximately 7.15"
• Belt Width: pulley for 1/2" or 5/8" belt applications
• Rotation: CW from pulley side
• Voltage: 12V DC
• Mounting: reverse mount
• Integrated brake assembly for controlled blade stopping
• Complete clutch assembly as shown in product photos

Pulley measurement note: Warner lists a 7.39 inch pulley/flange outside diameter for its 5218-270 clutch; the aftermarket replacement offered here is listed at 7.15 inches. These are published specifications for different supplied units. Compare the full pulley profile, belt fit, offset and mounting configuration rather than using one diameter alone to establish fitment.

Compatible Brands & Models

This PTO clutch is listed for select Toro Z Master commercial mower applications. Fitment depends on the exact Toro model and serial number, original clutch number, bore, pulley, rotation and connector.

Toro Z Master Applications

• Toro Z Master Z500: serial number 260000001 to 270999999
• Toro Z Master Z500: check exact model and original clutch on 52", 60" and 72" deck configurations within this range
• Toro Z Master Z528: serial number 270000001 to 270999999

Serial-number note: These ranges narrow the application; they do not make every Z500 or Z528 clutch interchangeable. If the original clutch is marked Toro 110-0449, Warner 5218-270, Warner 5218-141 or Xtreme X0463, compare the replacement's physical details with your old unit. If the label is unreadable, send us the Toro model and serial number with clear clutch photos.

Our 110-0449 part-number fitment guide walks through those checks and explains why 5218-141 appears alongside 5218-270.

Replaces OEM Part Numbers

• Toro: 110-0449

Cross-Reference Aftermarket Numbers

• Warner: 5218-270
• Warner: 5218-141 — earlier Warner number replaced by 5218-270
• Xtreme: X0463

What’s Included

• Complete electric PTO clutch assembly
• Pulley and pre-installed bearing assembly
• Electromagnetic coil and 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 support before and after you buy
• Clear product images for easier clutch identification

FAQ

Does Toro 110-0449 fit a Z Master Z500?

It is listed for select Z Master Z500 applications with serial number 260000001 to 270999999. Confirm the exact mower model and original clutch number before ordering.

Does Toro 110-0449 fit a Z Master Z528?

It is listed for select Z Master Z528 applications with serial number 270000001 to 270999999. Match the original clutch number, pulley and connector.

How are Warner 5218-270 and 5218-141 related?

Warner lists Toro 110-0449 for 5218-270 and expressly states that 5218-270 replaces 5218-141. If the old unit bears 5218-141, compare the complete replacement configuration before ordering.

Is Xtreme X0463 a cross-reference for Toro 110-0449?

Yes. Xtreme lists X0463 for the Toro 110-0449 application. Xtreme's specifications describe its own replacement clutch; the product offered on this page is the aftermarket unit shown in our photos.

What bore size does Toro 110-0449 use?

The listed replacement uses a 1-1/8 inch (1.125 inch) bore. Check your crankshaft diameter before ordering.

Why does Warner list a different pulley diameter?

Warner specifies 7.39 inches for its 5218-270 pulley/flange outside diameter, while this aftermarket replacement is listed at approximately 7.15 inches. Compare part numbers, belt groove, pulley offset and mounting geometry; do not rely on a rounded pulley number by itself.

What rotation does this clutch use?

This clutch uses clockwise rotation from the pulley side. Also match the original wiring connector and anti-rotation arrangement.

What are common signs of a PTO clutch problem?

Possible symptoms include blades failing to engage, a click without blade movement, intermittent engagement or operation that stops when the mower warms up. The PTO switch, wiring, safety circuit and deck belt can cause similar symptoms, so diagnose the system before replacing the clutch.

Can PTO Direct USA help me confirm fitment?

Yes. Email support@ptodirectusa.com with your Toro model and serial number, deck size, original clutch number and clear photos of the label, pulley, wiring connector and anti-rotation bracket.

Read the Toro 110-0449 PTO clutch fitment guide for the serial ranges and part-number comparison.

Need installation help? Read the PTO clutch installation guide.

Need another Z Master clutch? Visit the Toro Z Master clutch comparison guide or browse the Toro PTO clutch collection.