If your original PTO clutch is stamped 1757359 or 1757359YP, the correct current replacement is 01008434. You may also see it listed as 01008434P. In this clutch family, those numbers point to the same physical replacement path.
This replacement question comes up often because 1757359 and 1757359YP appear different at first glance. However, they are not different clutch assemblies. 1757359 is the base OEM number, while 1757359YP is a cataloged service version of the same clutch used through replacement and distribution channels.
That means the YP suffix typically signifies a packaging or distribution suffix, not a different pulley diameter, bore size, or operating design. For fitment purposes, 1757359 and 1757359YP are treated as the same physical PTO clutch family, both replaced by 01008434.
1757359 and 1757359YP Replaced by 01008434
The simplest way to think about it is this:
- 1757359 = base OEM clutch number
- 1757359YP = cataloged service version of the same OEM number
- 01008434 = current replacement number
- 01008434P = packaged service version of the same replacement family
If your mower parts list, old clutch, or dealer paperwork references 1757359 or 1757359YP, the replacement number you want to land on is 01008434.
What the YP Suffix Means
The YP suffix does not normally indicate a different clutch design. In most cases, it identifies how the part was cataloged, packaged, or distributed through a service network rather than signaling a mechanical change to the clutch itself.
So if you are comparing 1757359 to 1757359YP, the important takeaway is that the suffix reflects catalog treatment, not a different physical PTO clutch. The same logic applies on the replacement side when you encounter 01008434P. The suffix changes how the part is listed, not the fitment family.
Core Specs That Stay the Same
What matters most is that this replacement family keeps the same core fitment profile used across these applications:
- 1-inch crankshaft bore
- Approximately 5.35-inch pulley diameter slight variance up to a quarter inch is common for multi-fit aftermarket replacement clutches
- CCW rotation from the pulley side
- Electric PTO clutch design verify overall height if possible and visually compare it with the old unit before installation
- Operating range up to 3600 RPM
- Approximate torque rating of 120 FT-LBS
Related OEM Cross-Reference Numbers in This Family
Although this page focuses on 1757359 and 1757359YP, the same PTO clutch family also appears under several other OEM numbers across multiple mower brands.
- MTD / Cub Cadet / Craftsman: 01008434, 01008434P, 1008434, 759-05064
- Simplicity / Snapper / Ferris: 5023100, 5023100SM, 1717664, 1720532, 1757359, 1757359YP
- Toro / Wheel Horse: 124833, 539124833
- Additional interchange numbers: 7029232, 51110100, 35016, 33386
If you started with 1757359, or any part number listed above, the correct replacement is 01008434.
Common Simplicity, Snapper, and Ferris Applications
This replacement family is commonly associated with older Simplicity, Snapper, and Ferris mower platforms using 44-inch to 54-inch deck systems and a 1-inch bore electric PTO clutch setup.
- Simplicity: 2750, ZT2300, ZT1842, ZT21546, selected Cobalt Series models
- Snapper: selected SZT series applications
- Ferris: HydroCut walk-behind models including 5900111, 5900543, 5900544, 5900545, 5900546
This model list is a helpful starting point, but the most reliable fitment check is still matching the OEM number stamped on the original clutch.
How to Verify the Correct Replacement
Before ordering, confirm the original clutch matches this family:
- Match the stamped OEM number on the clutch housing
- Confirm 1-inch bore
- Confirm an approximate 5.35-inch pulley diameter
- Confirm CCW rotation from the pulley side
- Compare the wiring lead and connector style
If those details line up, 01008434 is the correct replacement path.
Do Not Confuse It with Similar-Looking Clutches
One of the easiest mistakes is choosing a clutch that looks similar but uses a different pulley diameter or OEM family. A clutch may bolt on and still create belt slip, weak blade speed, squeal, or poor deck performance.
This is especially important when comparing older multi-fit clutch families. Always verify the original OEM number first, then confirm bore and pulley diameter before ordering.
Common Symptoms of a Failed 1757359 or 1757359YP PTO Clutch
- Blades will not engage
- Deck engagement is intermittent
- Clutch clicks but the belt does not drive properly
- Blades slow down or stop in heavier grass
- Bearing noise during startup or shutdown
- Heat buildup or burnt smell near the clutch area
FAQ
Does the YP suffix mean I need a different clutch?
No. In this replacement family, 1757359 and 1757359YP are generally treated as the same physical clutch, with the suffix reflecting catalog or packaging treatment rather than a design change.
Can I use 01008434P if my old clutch says 1757359?
Yes. 01008434P is typically the packaged service version of 01008434, not a different fitment family.
What should I check if the part number on my old clutch is unreadable?
Start lookup by brand model and serial numbers. Then confirm the bore size, pulley diameter, rotation, wiring layout, and overall clutch height. A visual comparison with the original unit is a smart extra step before installation.
Related Guides
- 01008434 Replacement Guide
- 759-05064 Replaced by 01008434
- 5023100 and 5023100SM Replaced by 01008434
Shop the Current Replacement
If your mower uses 1757359 or 1757359YP, shop the current replacement here: 01008434 PTO clutch replacement.
Also browse by brand: Ferris