539104515 PTO Clutch for Husqvarna & Dixon | Warner 5218-75
539104515 PTO Clutch for Husqvarna & Dixon | Warner 5218-75
Overview
This aftermarket 539104515 electric PTO clutch is a replacement for select Husqvarna, Dixon, AYP, and related mower applications using the 539104515, 104515, or Warner 5218-75 clutch path.
This clutch uses a 1-1/8-inch crankshaft bore, approximately 6.31-inch pulley, and CCW rotation from the pulley side. It is designed as a complete assembled electric PTO clutch for compatible older Husqvarna ZTH-series and Dixon platforms.
Fitment note: Model-family names cover multiple engines, deck sizes, and clutch paths. Confirm that the original clutch or model-specific parts manual identifies 539104515 or Warner 5218-75 before ordering.
Key Features
- Aftermarket electric PTO clutch assembly
- Primary OEM Part Number: 539104515
- Also Listed As: 104515
- Warner Cross-Reference: 5218-75
- Crankshaft Bore: 1-1/8 inch / 1.125 inch
- Pulley Diameter: approximately 6.31 inch
- Rotation: CCW from pulley side
- Voltage: 12 VDC
- Complete assembled replacement clutch
Compatible Brands & Model Series
This PTO clutch is intended for select Husqvarna, Dixon, AYP, and related mower configurations using the confirmed 539104515 / Warner 5218-75 clutch path.
- Husqvarna: select ZTH series applications including ZTH5221KAA, ZTH5223KAA, ZTH5223KOA, ZTH5225KAA, ZTH5225KOA and related configurations
- Dixon: select applications using 539104515 or 104515
- AYP / Craftsman / related: select platforms that share the same 539104515 / 5218-75 path
Model-family warning: ZTH and related family names cover multiple clutch configurations. Do not order from the mower-family name, engine, or deck size alone.
Replaces OEM Part Numbers
- Husqvarna / AYP: 539104515, 104515
- Dixon: 539104515, 104515
Aftermarket Cross-Reference Numbers
- Warner: 5218-75
- Xtreme: X0315 (common aftermarket path)
- Stens: 255-080X
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
What’s Included
- 1 complete aftermarket electric PTO clutch assembly
- Integrated approximately 6.31-inch pulley
- Integrated electromagnetic coil and brake assembly
- Clutch-side electrical connection
Included-item warning: Do not assume the mower-side harness, crankshaft bolt, key, washer, spacer, clutch anchor, or anti-rotation bracket is included unless clearly shown in the product photos.
Why Buy From PTO Direct USA?
- Part-number-first PTO clutch listings
- Clear aftermarket cross-reference distinctions
- Fitment-focused product descriptions
- Fast USA shipping
- 1-year warranty
- Support for mower owners, repair shops, and commercial operators
Need Help Confirming Fitment?
Send PTO Direct USA the complete Husqvarna, Dixon, or related model number, serial number, deck size, engine model, and original PTO clutch number before ordering.
For the best fitment help, include clear photos of the mower identification tag, original clutch label or stamped number, pulley, electrical connector, and anti-rotation setup.
FAQ
What PTO clutch replaces Husqvarna 539104515?
This aftermarket electric PTO clutch replaces 539104515 and 104515 on compatible applications. The matching Warner number is 5218-75.
Does this replace Warner 5218-75?
Yes. This listing is built for the 5218-75 clutch path when the original clutch number and physical specifications match.
What are the main specifications for this clutch path?
1-1/8-inch crankshaft bore, approximately 6.31-inch pulley, CCW rotation from the pulley side, and 12 VDC operation.
Does this fit Husqvarna ZTH5221, ZTH5223, or ZTH5225?
It fits select ZTH5221, ZTH5223, and ZTH5225 configurations that use the confirmed 539104515 / 5218-75 path. Confirm the complete model number and original clutch number before ordering.
Can I order this clutch by model name or deck size alone?
No. Match the original clutch number or the exact model-specific parts diagram first, then confirm bore, pulley diameter, rotation, and connector style.
Is the mounting hardware or wiring harness included?
Do not assume the crankshaft bolt, key, washer, spacer, anti-rotation bracket, or mower-side harness is included unless clearly shown in the current product listing.