The 01008434 electric PTO clutch is a common multi-fit aftermarket replacement used across older MTD-built, Cub Cadet, Craftsman, Simplicity, Snapper, Ferris, Toro, Wheel Horse, and select Lawn-Boy mower platforms. This clutch family is widely sold under multiple OEM and service part numbers including 759-05064, 5023100SM, 1757359YP, and 124833.
If your mower blades will not engage, stop under load, or the clutch clicks without turning the deck belt, this 1-inch bore clutch family is one of the most common replacement groups to check on zero-turns, riding mowers, mid-size commercial units, and selected rear-engine platforms.
Built around a 1-inch crankshaft bore, approximately 5.35-inch pulley diameter, CCW rotation from the pulley side, and an electromagnetic coil, this clutch family is designed for dependable blade engagement up to 3600 RPM on a wide range of mower applications.
Why So Many Brands Use the Same PTO Clutch Family
This clutch family appears under many different OEM numbers because several mower brands sourced equivalent electromagnetic clutch assemblies for overlapping deck and engine combinations. In many cases, the same core clutch was sold under factory production numbers, dealer service numbers, retail packaged numbers, and aftermarket cross-reference numbers.
That is why a mower owner may find 01008434, 01008434P, 5023100SM, 1757359YP, or 124833 tied to what is effectively the same replacement family.
Fitment note: On this clutch family, small published pulley-diameter differences such as 5.31-inch versus 5.35-inch listings are generally treated as acceptable within normal aftermarket multi-fit tolerance when the bore, rotation, electrical configuration, and application family align.
Technical Specifications
- Primary Aftermarket Number: 01008434
- Crankshaft Bore: 1 inch
- Pulley Diameter: Approx. 5.35 inches
- Rotation: CCW from pulley side
- Operating Speed: Up to 3600 RPM
- Torque Rating: 120 FT-LBS
- Design: Electric PTO clutch with encapsulated coil and high-temperature bearing
- Use Case: Riding mowers, zero-turns, commercial walk-behinds, and selected rear-engine models
Complete OEM Part Number Cross-Reference
This PTO clutch family replaces the following manufacturer part numbers. These numbers are commonly treated as interchangeable within the same 1-inch bore, 5.35-inch pulley family.
Primary MTD / Cub Cadet / Craftsman Numbers
- 01008434
- 01008434P
- 1008434
- 759-05064
Simplicity / Ferris / Snapper Numbers
- 5023100
- 5023100SM
- 1717664
- 1717664SM
- 1720532
- 1757359
- 1757359YP
- 1686880SM
- 1687746
- 1687746YP
Toro / Wheel Horse / Lawn-Boy Numbers
- 124833
- 539124833
- 44-0770
- 54-0220
Murray / Snapper Numbers
- 7063304
- 7063304YP
- 7075085
- 7075085YP
Additional Cross-References
- 7029232
- 51110100
- 35016
- 33386
- B1XT0486
- 462715
- 462610
Ogura Manufacturer Numbers
- MA-GT-JD2
- MAGTJD2
- MA-GT-JD11
- MAGTJD11
- MA-GT-TRO
- MAGTTRO
- MA-GT-TROC
- MAGTTROC
Related OEM Cross-Reference Guides
- 759-05064 PTO Clutch | Replaced by 01008434
- 5023100 & 5023100SM PTO Clutch | Replaced by 01008434
- 1757359 & 1757359YP PTO Clutch | Replaced by 01008434
- 1720532 PTO Clutch | Replaced by 01008434
Helpful note: The P suffix in 01008434P typically indicates a packaged service version, not a different clutch. Likewise, the SM suffix in 5023100SM generally indicates service-network packaging rather than a different mechanical assembly.
Aftermarket Cross-Reference Numbers
- STENS: 255-210X, 255-336X, 255-348X, 255-349X, 255-350X, 255-940X
- 8TEN: 810-CPT2303O
Compatible Mower Models by Brand
This clutch family is commonly found on mower platforms with 44-inch to 54-inch decks, especially where a 1-inch bore clutch is paired with older MTD-built, Simplicity-built, or Toro commercial deck systems. The best confirmation method is still matching your original clutch number and basic specs.
Cub Cadet
- Z-Force 15
- Z-Force 18
- Z-Force 44
- Z-Force 48
- Z-Force 50
- Z-Force 54
- Z-Force Pro 48
- Z-Force Pro 48-KH
- Z-Force Pro 54
- Tank M50
- Enforcer 44
- Enforcer 48
- Enforcer 54
- HFF1748
See also: Cub Cadet PTO Clutch Replacement Guide
Craftsman
- ZTL7500
- 247.250030
- ZT7000
- ZTS7000
- ZTS7500
- ZTS6000
MTD
- EZT2042
- RZT2552
- ZT1842
- ZT2042
- ZT2242
- ZT2346
- ZT2548
- ZTR 355Z
- ZTR 400Z
Simplicity / Snapper / Ferris
- Simplicity 2750
- Simplicity ZT2300
- Simplicity ZT1842
- Simplicity ZT21546
- Simplicity Cobalt Series
- Snapper SZT18336BVE
- Snapper SZT18386BVE
- Ferris HydroCut models 5900111, 5900543, 5900544, 5900545, 5900546
Toro / Wheel Horse / Lawn-Boy
- Groundsmaster 117
- Groundsmaster 120
- ProLine 118
- ProLine 120 Series
- 11-32 Lawn Tractor
- 11-38 Lawn Tractor
- 11-42 Lawn Tractor
- 11-44 Lawn Tractor
- 12-32 Lawn Tractor
- Wheel Horse RJ-58
- Wheel Horse RJ-59
- Wheel Horse 12-32 Rear Engine
See also: Toro ProLine PTO Clutch Guide
For newer Toro TimeCutter, Titan, and many Z-Master zero-turns, start here instead: Toro PTO Clutch Replacement Guide
Commonly Confused PTO Clutches
Toro 127-3410 is not part of this family. That clutch is commonly associated with newer Toro TimeCutter, Titan, and Z Master configurations and should not be treated as a replacement for 01008434, 124833, or 5023100SM family applications.
917-04184 is also not interchangeable. That Cub Cadet and MTD family uses a smaller 5.25-inch pulley. Although it may look similar, it can cause belt slip, squeal, or poor blade performance if substituted for this 5.35-inch clutch family.
Compatibility alert: Measure your original pulley diameter before ordering. A clutch that physically bolts on is not always the correct belt-drive match.
How to Confirm Fitment Before Ordering
- Match the OEM number stamped on the original clutch housing
- Confirm 1-inch crankshaft bore
- Confirm pulley diameter is approximately 5.35 inches
- Confirm CCW rotation from pulley side
- Compare mower platform, engine family, and deck size
- Check wiring style and be prepared to splice if replacing an aged OEM connector
Pro tip: Many original clutches in this family were built by Ogura. If your old clutch shows an Ogura code like MA-GT-JD2 or MA-GT-TRO, that is a strong fitment clue even if the mower brand number is missing.
Common Symptoms of PTO Clutch Failure
- Blades will not engage
- Blades engage intermittently
- Clutch clicks but does not turn the belt
- Burning smell or excessive heat near the clutch
- Bearing noise during engagement
- Blades stop under load in thicker grass
This clutch family is generally a fixed-air-gap, non-adjustable replacement unit. If the air gap grows beyond the magnetic pull range, replacement is the correct repair rather than adjustment.
FAQ
What does 01008434P mean?
The P suffix usually indicates a packaged service part. It does not mean the clutch is mechanically different from 01008434.
Does 5023100SM differ from 5023100?
In most cases, no. The SM suffix usually refers to service packaging for dealer and replacement channels.
Can this clutch family fit Kawasaki-powered mowers?
Yes. This 1-inch bore, 5.35-inch pulley setup is commonly found on mower platforms using Kawasaki V-Twin engines, especially in zero-turn and commercial-duty applications.
Why does my replacement clutch have different wiring?
Aftermarket clutches may use universal leads or a different connector style. That does not necessarily indicate the wrong clutch, provided the part number family and core specs match.
Does this clutch fit newer Toro TimeCutter or Titan mowers?
Usually not. Many newer Toro residential and commercial zero-turns use different clutch families. Verify by OEM number before ordering.
Shop the Correct Replacement
Need a direct replacement for this family? Start with the matching product page for 01008434 PTO clutch replacement and confirm your OEM number before ordering.