The best lawn mower PTO clutch is the one that matches your mower’s model, original part number, crankshaft bore, pulley diameter, and rotation. The BDELI 917-05209 is best for listed Cub Cadet and MTD models; the OCPTY 717-04376 suits certain RZT and zero-turn mowers; and the Bad Boy replacement targets specified MZ and ZT models. The other options cover additional replacement numbers and shaft sizes, so verify your mower details before ordering.
| Product | Best For | Key Fitment Detail |
|---|---|---|
| BDELI 917-05209 | Listed Cub Cadet and MTD models | 1-inch bore, 6-inch pulley |
| OCPTY 717-04376 | Specified RZT and zero-turn models | 1-inch bore, 6-inch pulley |
| OCPTY AM119683 replacement | Mowers matching its listed part numbers | 1-inch bore, 5.35-inch pulley |
| 070-0055-00 replacement | Specified Bad Boy mowers | 1-inch bore, 6-inch pulley |
| BDELI 1-1/8-inch clutch | Models matching its listed replacement numbers | 1-1/8-inch bore, 6.1-inch pulley |
BDELI 917-05209 PTO Clutch
This electric PTO clutch is best for owners of listed Cub Cadet, MTD, and Huskee equipment who need a match for part number 917-05209 or another number in the replacement list. Its stated specifications are a 1-inch crankshaft bore, 6-inch pulley, counterclockwise rotation, and a belt width of 5/8 inch.
The listing includes fitment for models such as the RZT 50 and RZT 54, LT1042 through LT1050, and SLT1550 and SLT1554. It also names several replacement numbers from Warner, Ariens, Gravely, and other brands. Choose this clutch if both your mower’s model and key dimensions agree with the listing. Do not rely on a similar-looking clutch alone; confirm the original part number and measurements.
OCPTY 717-04376 PTO Clutch
This OCPTY clutch is best for buyers whose mower calls for 717-04376, 717-05121, or a listed equivalent. Its stated dimensions are a 1-inch crankshaft size and 6-inch pulley, with counterclockwise rotation. The replacement references include several Warner, Ariens, MTD, Cub Cadet, and Troy-Bilt numbers.
Listed equipment includes certain Cub Cadet RZT-42 versions, a Columbia 42-inch zero-turn mower, and selected Colt XP and Mustang Colt RZT models. It is a useful option when the part number and mower series line up. The caution is that fitment is specific: the listing distinguishes model years and identifiers for some machines, so check the full model information instead of matching only the brand or deck size.
OCPTY AM119683 Replacement Clutch
This clutch is best for a mower whose original clutch number matches one of the extensive listed references, including AM119683, 117-7468, 104-3334, and 717-1459. Its specifications include a 1-inch crankshaft size, 5.35-inch pulley diameter, and counterclockwise rotation.
The replacement list names numbers associated with brands such as Husqvarna, Poulan, Craftsman, Ariens, Gravely, and Cub Cadet. This option is better for buyers who can verify an original part number than for buyers choosing by brand alone. Its 5.35-inch pulley is smaller than the 6-inch pulleys specified for several other options here, so compare pulley diameter as well as bore and rotation before ordering.
070-0055-00 Bad Boy PTO Clutch
This replacement is best for owners of the listed Bad Boy MZ Magnum (2017–2023), ZT Avenger (2020–2023), or MZ Rambler (2023–2026) who need part number 070-0055-00 or 070005500. The listing gives a 1-inch crank bore and 6-inch pulley, and it says the clutch accommodates a 1/2-inch or 5/8-inch belt. A wire harness is included in the product name.
Choose this option when the mower model, year, and replacement number match. The stated compatibility is limited to named Bad Boy series and year ranges, so avoid assuming it fits other Bad Boy mowers based on brand alone. Confirm the machine’s identification details before purchase.
BDELI 1-1/8-Inch PTO Clutch
This BDELI clutch is best for equipment requiring a 1-1/8-inch crankshaft bore and one of its listed replacement numbers. Its stated specifications are a 6.1-inch pulley, counterclockwise rotation, and compatibility with 1/2-inch or 5/8-inch belt widths. Listed references include Warner 5218-series numbers, Bad Boy 070-1000-00, and numbers associated with Ferris, Simplicity, Husqvarna, and Poulan.
Its larger bore makes it distinct from the 1-inch options in this guide. Choose it only when the original clutch or mower specifications call for the 1-1/8-inch size. The listing provides replacement numbers but not a detailed model-by-model fitment chart, so verify the exact part number before ordering.
Buying Guide: How to Choose a Lawn Mower PTO Clutch
Which measurements should you compare?
Start with the crankshaft bore, pulley diameter, rotation direction, and belt width. These products include 1-inch and 1-1/8-inch bores, pulley diameters from 5.35 to 6.1 inches, and belt specifications that vary by listing. A mismatch in any of these details can make a clutch unsuitable, even if the product name mentions your mower’s brand.
Should you shop by model or part number?
Use the mower’s full model and year information alongside the original clutch part number. Part-number cross-references can help identify a replacement, while a model-specific fitment list can narrow the choices. When the two sources disagree or the listing lacks detailed model fitment, confirm the correct replacement using the mower documentation or the original part identification.
What does rotation mean?
Rotation describes the direction in which the clutch is specified to turn. The products here list counterclockwise rotation, but that specification should still be checked against the clutch being replaced. Do not treat the shared rotation direction as proof that two clutches are interchangeable; dimensions and part numbers matter too.
What details should you check before ordering?
- Record the mower’s complete model number and year, when available.
- Read the part number on the original clutch or consult the mower’s parts information.
- Compare crankshaft bore, pulley diameter, rotation, and belt width.
- Check whether the listing names your model or a matching replacement number.
Frequently Asked Questions
What does a lawn mower PTO clutch do?
A PTO clutch engages the mower’s cutting attachment through the power take-off system. The products in this guide are electric PTO clutch replacements.
Can I choose a PTO clutch by mower brand alone?
No. A brand may have multiple mower models and clutch specifications. Match the part number and dimensions, and check the model-specific fitment information.
Are 1-inch and 1-1/8-inch clutch bores interchangeable?
No. They are different stated crankshaft sizes. Select the bore that matches the mower’s required clutch specification.
Why compare pulley diameter?
Pulley diameter differs among these options, from 5.35 inches to 6.1 inches. Compare it with the original clutch specification rather than assuming all PTO clutches use the same size.
What if my mower model is not listed?
Check the original clutch number and specifications against the product’s replacement references. If you cannot verify a match, confirm the correct part using the mower’s parts information before ordering.