59118600 PTO Clutch Fitment Guide

April 26, 2026

The 59118600 PTO clutch is a heavy-duty electric PTO clutch replacement commonly used on select Ariens Zenith, Gravely Pro-Turn ZX, Toro Titan HD, and Exmark Radius zero-turn mower platforms. This clutch family is also commonly cross-referenced with 05191600, 126-8926, 126-4324, Warner 5219-201, and Warner 5219-205.

If your mower blades will not engage, the PTO clutch clicks but the belt does not move, or the blades slow down under heavy load, this clutch family may be one of the first replacement groups to check. The safest way to confirm fitment is to match the OEM number stamped, engraved, printed, or labeled on your original clutch.

If your original clutch matches this family, view the direct replacement here: 59118600 PTO clutch replacement.

Need help confirming fitment?
Email support@ptodirectusa.com with your mower model number, serial number, OEM clutch number, and clear photos of the old clutch, wiring connector, pulley, and deck belt routing.

59118600 PTO Clutch Replacement Specs

The 59118600 clutch family is built for heavier-duty commercial and high-load zero-turn mower platforms. Always compare the replacement clutch to your original unit before ordering.

Primary replacement number: 59118600
Crankshaft bore: 1-1/8 inch
Pulley diameter: approximately 7.20 inches
Rotation: CCW from pulley side
Torque rating: approximately 125 FT-LBS
Operating speed: up to 3600 RPM
Design: electric PTO clutch with electromagnetic coil
Common application type: commercial and heavy-duty zero-turn mower platforms

Fitment warning: Do not choose a PTO clutch by appearance alone. Confirm the original clutch number, pulley diameter, bore size, pulley offset, rotation, wiring connector, and anti-rotation bracket position before installation.

Replaces OEM and Manufacturer Part Numbers

This 59118600 PTO clutch replacement is commonly used to replace the following OEM and manufacturer reference numbers:

59118600
05191600
126-8926
126-4324
Warner 5219-201
Warner 5219-205
5129201
5219205

If your original clutch shows one of these numbers, the 59118600 PTO clutch replacement may be the correct fit when the physical specs and mower application also match.

For the Toro and Exmark replacement path, see the 126-8926 PTO Clutch | Replaced by 59118600 guide.

Compatible Ariens Models

The 59118600 clutch family is commonly associated with select Ariens Zenith zero-turn mower platforms. Fitment can vary by deck size, production year, engine setup, and previous service history, so confirm by original clutch number before ordering.

Ariens Zenith Series

Ariens Zenith 52 SD
Ariens Zenith 52 SD RD
Ariens Zenith 60 SD
Ariens Zenith 60 RD

If your Ariens Zenith uses 59118600 or 05191600, start with the 59118600 PTO clutch replacement. For broader Ariens fitment help, see the Ariens PTO clutch replacement guide.

Compatible Gravely Models

The 59118600 clutch family is commonly used on select Gravely Pro-Turn ZX commercial zero-turn platforms. These are heavier-duty applications, so bore size, pulley diameter, and pulley offset must be confirmed before ordering.

Gravely Pro-Turn ZX Series

Gravely Pro-Turn ZX 48
Gravely Pro-Turn ZX 52
Gravely Pro-Turn ZX 60

For broader Gravely platform routing, see the Gravely PTO clutch replacement guide.

Compatible Toro Models

The Toro side of this clutch family commonly appears under OEM numbers 126-8926 and 126-4324. These numbers are commonly associated with select Toro Titan HD platforms, not every Toro Titan or TimeCutter mower.

Toro Titan HD Series

Toro Titan HD 2000 Series
Toro Titan HD 2500 Series
Common deck sizes include 48-inch, 52-inch, and 60-inch configurations

If your original Toro clutch shows 126-8926 or 126-4324, see the 126-8926 PTO clutch replacement guide before ordering.

Compatible Exmark Models

Some Exmark Radius models are tied to the 126-8926 / 59118600 clutch family. Exmark fitment can vary by model series, deck width, and serial range, so use the original clutch number as the primary confirmation method.

Exmark Radius Series

Exmark Radius E-Series
Exmark Radius S-Series
Exmark Radius X-Series
Common deck sizes include 48-inch, 52-inch, and 60-inch configurations

For broader Exmark fitment help, see the Exmark PTO clutch replacement guide.

Do Not Confuse 59118600 With Other PTO Clutch Families

The 59118600 family is a larger heavy-duty clutch group with a 1-1/8 inch bore and approximately 7.20-inch pulley. It should not be swapped with smaller or lighter-duty clutch families just because the clutch looks similar in photos.

59118600 vs. 110-6766

The 110-6766 clutch family is commonly tied to selected Toro TimeCutter, Toro Titan, Exmark Quest, Ariens Zoom, Gravely, and related applications. It is not the same as the 59118600 / 126-8926 family. If your original clutch shows 110-6766, 103-9950, 100-6059, 108-9510, or Warner 5219-series numbers from that group, start with the 110-6766 PTO clutch fitment guide.

59118600 vs. 01008434 / 759-05064

The 01008434 / 759-05064 clutch family is a different replacement group with a 1-inch bore and approximately 5.35-inch pulley. If your original clutch shows 01008434, 759-05064, 124833, or 539124833, use the 01008434 PTO clutch replacement guide instead.

59118600 vs. 539106880

The 539106880 clutch family is commonly tied to selected Husqvarna iZ and Dixon zero-turn platforms. It is not the same as 59118600 unless the original clutch number and physical specs confirm the match.

Common Symptoms of a Failing 59118600 PTO Clutch

A failing PTO clutch can cause blade engagement problems, belt movement issues, heat, noise, or intermittent operation. These symptoms can also be caused by wiring, voltage, belt routing, idler pulleys, or deck spindles, so inspect the system before replacing parts.

Mower blades will not engage
PTO clutch clicks but blades do not spin
Deck belt does not move when the PTO is activated
Blades engage intermittently
Blades slow down or stop under load
Burning smell near the clutch or belt
Grinding, squealing, or bearing noise near the clutch
Clutch gets hot during mowing
Blown fuse or electrical issue when PTO is activated

If your blades will not engage at all, start with our PTO clutch won’t engage troubleshooting guide. If the clutch clicks but the blades do not spin, use the PTO clutch clicks but blades won’t spin guide. If the clutch slips under load, see the PTO clutch slipping under load guide. If the clutch gets hot or smells burnt, read the PTO clutch getting hot or smells burnt guide.

How to Confirm Fitment Before Ordering

The most reliable way to confirm compatibility is to match the OEM number stamped, engraved, printed, or labeled on your original PTO clutch. If the number is missing or damaged, compare the clutch dimensions and mower details.

Match the original clutch number, such as 59118600, 05191600, 126-8926, or 126-4324
Confirm the crankshaft bore is 1-1/8 inch
Confirm the pulley diameter is approximately 7.20 inches
Confirm CCW rotation from pulley side
Compare the wiring connector or lead style
Check the anti-rotation bracket position
Confirm the mower model, serial number, engine setup, and deck size
Inspect deck belt routing, idlers, and spindle drag before installing a new clutch

Not sure where to find the clutch number? Use our PTO clutch fitment guide before ordering.

Before Installing the Replacement Clutch

Before installing a new PTO clutch, inspect the mower for issues that can damage the replacement.

Check the deck belt for glazing, cracks, oil, or wear
Confirm the belt is routed correctly around the clutch pulley, idlers, and spindle pulleys
Make sure idler pulleys and blade spindles spin freely
Inspect the wiring connector for corrosion, loose terminals, or heat damage
Inspect the crankshaft for rust, burrs, or keyway damage
Confirm the anti-rotation bracket is properly positioned

Review the PTO clutch installation guide before installing the replacement. If the old clutch is stuck on the crankshaft, see the PTO clutch stuck on crankshaft guide before forcing removal.

Shop 59118600 PTO Clutch Replacement

If your original clutch is marked 59118600, 05191600, 126-8926, 126-4324, Warner 5219-201, or Warner 5219-205, and the core specs match, shop the 59118600 PTO clutch replacement.

You can also browse the Ariens PTO clutch collection, Gravely PTO clutch collection, Toro PTO clutch collection, Exmark PTO clutch collection, or the full electric PTO clutch catalog.

Related Brand and Cross-Reference Guides

Helpful PTO Clutch Resources

FAQ

What does the 59118600 PTO clutch replace?

The 59118600 PTO clutch commonly replaces 05191600, 126-8926, 126-4324, Warner 5219-201, and Warner 5219-205. Confirm the original clutch number and physical specs before ordering.

Is 126-8926 replaced by 59118600?

Yes. The 126-8926 PTO clutch is commonly cross-referenced to the 59118600 replacement family. Confirm the 1-1/8 inch bore, approximately 7.20-inch pulley, pulley offset, wiring connector, anti-rotation bracket, and mower application before ordering.

What mower platforms commonly use this clutch?

This clutch family is commonly associated with select Ariens Zenith, Gravely Pro-Turn ZX, Toro Titan HD, and Exmark Radius zero-turn mower platforms.

What crankshaft bore does 59118600 use?

The 59118600 clutch family uses a 1-1/8 inch crankshaft bore.

What pulley diameter does this clutch use?

This clutch family uses an approximately 7.20-inch pulley. Confirm the pulley diameter on your original clutch before ordering.

Is 59118600 the same as 110-6766?

No. The 59118600 / 126-8926 family is a different heavy-duty clutch group than the 110-6766 family. Match the OEM number and physical specs before ordering.

Can PTO Direct USA help me confirm fitment?

Yes. Email support@ptodirectusa.com with your mower model number, serial number, 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, deck belt routing, and any visible Warner or Ogura numbers on the clutch body.