539113437 High-Torque PTO Clutch for Husqvarna, Dixon & RedMax | Ogura GT2.5-FE02
Overview
This page covers an HD Switch 539113437 aftermarket electric PTO clutch for select Husqvarna, Dixon, RedMax, and Yazoo Kees zero-turn mower applications using the 539113437 or Ogura GT2.5-FE02 clutch path.
The linked replacement is marketed by HD Switch as a 175 ft-lb high-torque upgrade for the original 150 ft-lb clutch path. Seller-listed features include a solid-steel billet pulley, larger replaceable pulley bearing, premium C3 bearing construction, and a heavy-duty replaceable wire harness.
The original replacement path uses a 1-1/8-inch crankshaft bore, approximately 6.1-inch pulley, CCW rotation from the pulley side, and a 12 VDC electrical system.
The purchase button on this page links to a third-party HD Switch aftermarket replacement sold on eBay. It is not presented as a genuine Husqvarna, Dixon, RedMax, Yazoo Kees, or Ogura OEM clutch.
Key Features
- Aftermarket high-torque electric PTO clutch assembly
- Brand: HD Switch
- Primary OEM Part Number: 539113437
- Original Ogura Clutch Path: GT2.5-FE02, GT25FE02
- Xtreme Cross-Reference: X0606
- Seller-Rated Torque: 175 ft-lbs
- Original Clutch Torque Path: 150 ft-lbs
- Voltage: 12 VDC
- Crankshaft Bore: 1-1/8 inch / 1.125 inch
- Pulley Diameter: approximately 6.1 inch / 6-1/8 inch nominal path
- Rotation: CCW from pulley side
- Belt Compatibility: 1/2-inch or 5/8-inch V-belt
- Connection Style: replaceable wire-harness design as represented by the seller
- Clutch Type: electric PTO clutch with integrated brake
- Solid-steel billet pulley construction
- Larger pulley bearing intended to improve bearing service life
- Replaceable pulley bearing retained with a snap ring
- Premium C3 bearing construction with high-temperature grease
- Complete assembled replacement clutch
Compatible Brands & Model Series
This is a part-number-first affiliate listing for select mower applications using OEM number 539113437 or Ogura clutch number GT2.5-FE02.
Husqvarna EZ and EZC Series
- EZ4220
- EZ4624
- EZ4822
- EZ4824
- EZ5224
- EZ5225
- EZ5226
- EZ6124
- EZC4824
Husqvarna P-ZT and PZT Series
- P-ZT26 / PZT26
- P-ZT4822 / PZT4822
- P-ZT48 / PZT48
- P-ZT5224 / PZT5224
- P-ZT54 / PZT54
- P-ZT60 / PZT60
- P-ZT6126FS / PZT6126FS
- P-ZT6128FS / PZT6128FS
Husqvarna RZ Series
- RZ4219
- RZ4619
- RZ4620
- RZ5422
- RZ5424, including select product-number paths such as 965881301
Husqvarna Z Series
- Z548
- Z554 and Z554L
- Z560 and Z560L
Dixon Applications
- Ram 44
- Ram 50
- Ram Mag 44
- Ram Mag 50
RedMax and Yazoo Kees Applications
- RedMax: select CZT48, CZT54, CZT60, and related zero-turn applications using 539113437
- Yazoo Kees: select mower applications using OEM number 539113437
Model-family warning: The mower names above can include multiple engines, product numbers, production revisions, deck sizes, crankshaft configurations, connectors, and PTO clutch paths. Do not order from the mower-family name or deck size alone.
Replaces OEM Part Numbers
- Husqvarna: 539113437
- Dixon: 539113437
- RedMax: 539113437
- Yazoo Kees / Kees: 539113437
Aftermarket and Manufacturer Cross-References
- Ogura: GT2.5-FE02, GT25FE02
- Xtreme: X0606
- HD Switch: 539113437 high-torque replacement path
Cross-reference warning: Match the complete Ogura model number. The GT2.5 family contains multiple clutch configurations with different bores, pulley diameters, rotation directions, connectors, mounting geometry, and torque ratings.
Before Ordering
- Match the original clutch number to 539113437 or Ogura GT2.5-FE02
- Confirm a 1-1/8-inch / 1.125-inch crankshaft bore
- Confirm an approximately 6.1-inch pulley diameter
- Compare pulley offset and deck-belt alignment
- Confirm CCW rotation from the pulley side
- Confirm compatibility with a 1/2-inch or 5/8-inch deck belt
- Compare the replacement wire lead, connector, terminal orientation, and polarity
- Confirm the clutch anchor and anti-rotation bracket location
- Inspect available clearance around the coil housing and pulley
- Confirm the complete mower model, product number, serial number, deck size, and engine package
Pulley-measurement note: Published references describe this pulley as approximately 6.1 inch, 6-1/16 inch, or 6-1/8 inch depending on the source and measuring method. Match the original part number rather than rejecting or selecting the clutch from a small nominal measurement difference alone.
Do not install or test-mount the clutch until fitment is confirmed. Installation marks, wiring changes, or bracket modifications may affect the eBay seller’s return eligibility.
Common Symptoms of a Failing PTO Clutch
- Blades will not engage when the PTO switch is activated
- The clutch clicks but the deck belt does not begin turning
- Blades engage when cold but stop after the clutch heats up
- The clutch slips during heavy or wet cutting conditions
- The deck belt squeals, smokes, or overheats during engagement
- Burning smell near the engine crankshaft or clutch
- Grinding, rumbling, or excessive pulley-bearing noise
- Intermittent blade engagement under load
- Visible heat damage around the coil housing or connector
- Excessive looseness, roughness, or wobble at the pulley bearing
A weak battery, charging-system problem, damaged PTO switch, blown fuse, poor ground, damaged wiring, slipping belt, seized spindle, or dragging idler can produce similar symptoms. Diagnose the mower before replacing the clutch.
What’s Included
- 1 aftermarket HD Switch electric PTO clutch assembly
- High-torque electromagnetic coil and integrated brake assembly
- Solid-steel billet pulley
- Larger replaceable pulley bearing
- Replaceable clutch-side wire harness as represented by the seller
Package-content warning: Do not assume the crankshaft bolt, key, washer, spacer, anti-rotation bracket, clutch anchor, mower-side wiring harness, PTO switch, or other mower-specific hardware is included unless it is clearly shown or stated in the current eBay listing.
Why Consider This HD Switch PTO Clutch?
- Designed for the Husqvarna, Dixon, RedMax, and Yazoo Kees 539113437 clutch path
- 175 ft-lb seller-rated high-torque design
- Higher published holding torque than the original 150 ft-lb path
- Solid billet pulley intended to maintain consistent belt alignment
- Larger pulley bearing intended to improve bearing durability
- Replaceable pulley-bearing design
- Replaceable heavy-duty wire harness
- C3 bearing construction and high-temperature grease
- Useful alternative when the OEM clutch is unavailable or cost-prohibitive
Third-Party Purchase Notice
This product is not purchased through the PTO Direct USA checkout. Selecting the eBay button takes you to an independent third-party seller.
- The eBay seller controls pricing and inventory.
- The eBay seller processes payment and fulfillment.
- The eBay seller controls shipping, returns, package contents, and warranty support.
- PTO Direct USA does not guarantee continuing availability of the linked item.
- Review the seller’s current description, product photos, delivery estimate, return policy, and warranty terms before purchasing.
Affiliate disclosure: As an eBay Partner, PTO Direct USA may earn a commission from qualifying purchases made through the link on this page.
Need Help Confirming Fitment?
Send PTO Direct USA the complete mower model or product number, serial number, deck size, engine model, original clutch number, pulley measurement, connector photos, and anti-rotation bracket photos before ordering.
For the best fitment help, include clear photos of the mower identification tag, original clutch label, crankshaft bore, pulley, wire connector, clutch anchor, and deck-belt routing.
FAQ
What PTO clutch replaces Husqvarna 539113437?
This HD Switch aftermarket electric PTO clutch is marketed as a replacement for Husqvarna 539113437 on compatible mower applications.
What Ogura number crosses to 539113437?
The original clutch-manufacturer path is Ogura GT2.5-FE02, also searched as GT25FE02.
Is Xtreme X0606 a replacement for 539113437?
Yes. Xtreme X0606 is a confirmed aftermarket replacement path for Husqvarna, Dixon, and Kees 539113437 applications.
Is this a genuine Husqvarna or Ogura clutch?
No. The linked item is presented as an HD Switch aftermarket replacement. It is not presented as a genuine Husqvarna, Dixon, RedMax, Yazoo Kees, or Ogura OEM clutch.
What are the main clutch specifications?
This replacement path uses a 1-1/8-inch crankshaft bore, approximately 6.1-inch pulley, CCW rotation from the pulley side, a 12 VDC electrical system, and compatibility with a 1/2-inch or 5/8-inch deck belt.
Why is this clutch rated at 175 ft-lbs when the original is rated at 150 ft-lbs?
HD Switch markets the linked clutch as a high-torque replacement with a 175 ft-lb holding-torque rating. The original Husqvarna and Ogura path is commonly identified as a 150 ft-lb clutch.
Is 175 ft-lbs the mounting-bolt torque?
No. The 175 ft-lb figure is the seller’s clutch holding-torque rating. It is not the crankshaft mounting-bolt specification. Use the mower or engine service manual for installation torque.
Does this fit a Husqvarna RZ5424?
It fits select Husqvarna RZ5424 product-number paths using 539113437, including documented 965881301 configurations. Other RZ5424 production paths may use a different PTO clutch, so confirm the complete product number and parts diagram.
Does this fit Husqvarna Z548, Z554, or Z560?
It is cataloged for select Z548, Z554, Z554L, Z560, and Z560L configurations using 539113437. Confirm the mower’s complete product number and serial-specific parts list before purchasing.
Does this fit Husqvarna P-ZT54 or P-ZT60?
It fits select P-ZT54 and P-ZT60 applications using the confirmed 539113437 clutch path. Do not rely on the P-ZT family name or deck width alone.
Does this fit Dixon Ram and Ram Mag mowers?
It fits select Dixon Ram 44, Ram 50, Ram Mag 44, and Ram Mag 50 applications using 539113437. Match the original clutch number before ordering.
Does this fit every Husqvarna RZ, EZ, P-ZT, or Z-Series mower?
No. These mower families contain multiple PTO clutch paths. Confirm the complete mower product number, serial number, original clutch number, crankshaft bore, pulley, connector, and anti-rotation setup.
Can I order this clutch by appearance alone?
No. Similar-looking electric PTO clutches can use different bores, pulley offsets, rotation directions, connector layouts, belt grooves, torque ratings, and anti-rotation geometry.
Is a PTO switch included?
No PTO switch is represented in the linked product title. Confirm all package contents from the current eBay description and product photos before purchasing.
Is the mounting hardware included?
Do not assume the crankshaft bolt, key, washer, spacer, clutch anchor, anti-rotation bracket, or mower-side wiring is included unless the eBay seller specifically shows or states that it is included.
Who handles payment, shipping, returns, and warranty?
The independent eBay seller handles payment, order processing, shipping, returns, and any seller-provided warranty. Review the current eBay terms before purchasing.