5023100SM / 51110100 PTO Clutch Replacement for Simplicity, Snapper & Ferris | 1" Internal Keyway
5023100SM / 51110100 PTO Clutch Replacement for Simplicity, Snapper & Ferris | 1" Internal Keyway
Overview
This 5023100SM / 51110100 electric PTO clutch replacement fits select Simplicity, Snapper, and Ferris mower applications using the 5023100SM / 51110100 clutch path.
Briggs & Stratton identifies 5023100SM as the electric clutch associated with 51110100. Published replacement data also groups 5023100, 5023100SM, and 51110100 across compatible Ferris, Simplicity, and Snapper applications.
This configuration uses a 1-inch bore with an internal machined keyway in the clutch hub, an approximately 5.30-inch pulley, and CCW rotation from the pulley side.
Critical keyway warning: This is the internal-keyway clutch configuration. Similar-looking electric PTO clutches exist with a different external or integral key arrangement. Do not order by bore size, pulley diameter, or appearance alone. Match the original clutch number and inspect the keyway configuration before ordering.
Key Features
- aftermarket electric PTO clutch assembly
- Primary Part Number: 5023100SM
- OEM Reference: 51110100
- Alternate Number: 5023100
- Xtreme Cross-Reference: X0488
- Crankshaft Bore: 1 inch
- Keyway Configuration: internal machined keyway in clutch bore
- Pulley Diameter: approximately 5.30 inch
- Rotation: CCW from pulley side
- Belt Compatibility: 1/2-inch or 5/8-inch belt path on supported applications
- Reference Torque Rating: 110 ft-lb for the published X0488 replacement path
- Integrated electric clutch and brake assembly
- Fully assembled and ready to install after fitment verification
Torque rating note: The clutch torque rating describes the clutch's torque capacity. It is not the mounting-bolt tightening torque. Always use the correct mounting-bolt torque specification for the mower, engine, bolt, and clutch installation.
Compatible Brands & Model Series
This is a part-number-first replacement for equipment using the confirmed 5023100 / 5023100SM / 51110100 clutch path.
Simplicity Applications
- Champion ZT Series: select applications using the 5023100SM / 51110100 clutch path
- Consumer Zero-Turn Series: select applications
- ZT3000 Series: select applications
Snapper Applications
- 355Z ZTR Series: select applications
- 375Z ZTR Series: select applications
- 400Z ZTR Series: select applications
- LT160H Series: select applications
- LT180H / WLT180H Series: select applications
- LT200H / WLT200H Series: select applications
- ZTR FastCut Series 0 and Series 1: select applications
Ferris Applications
This clutch is also cataloged under Ferris 5023100, 5023100SM, and 51110100. Because Ferris applications span multiple mower families and clutch configurations, match the original clutch number and physical keyway arrangement rather than relying on the Ferris brand name alone.
Fitment warning: Similar-looking 1-inch-bore PTO clutches exist in several Simplicity, Snapper, and Ferris families. Match the original clutch number first and verify the internal machined keyway, pulley diameter, pulley offset, connector, and anti-rotation setup before ordering.
Replaces OEM Part Numbers
- Briggs & Stratton / Simplicity: 5023100SM, 51110100
- Simplicity: 5023100, 5023100SM, 51110100
- Ferris: 5023100, 5023100SM, 51110100
- Snapper: 5023100, 5023100SM, 51110100
Aftermarket Cross-Reference Numbers
- Xtreme: X0488
Cross-reference warning: Older and aftermarket clutch catalogs frequently combine physically similar PTO clutch families. This listing is specifically for the internal-keyway 5023100SM / 51110100 configuration shown in the product photos.
Common Symptoms of a Failing PTO Clutch
- Blades will not engage when the PTO switch is activated
- PTO clutch clicks but the deck belt does not turn
- Blades engage when cold and stop after the mower heats up
- Intermittent blade engagement under load
- Deck belt slips, squeals, or smokes during engagement
- Burning smell or excessive heat near the clutch
- Grinding, bearing noise, or vibration from the clutch area
- PTO fuse repeatedly blows because of a clutch coil or wiring problem
What’s Included
- 1 complete HD Big Bearing electric PTO clutch assembly
- Approximately 5.30-inch machined billet pulley
- 1-inch clutch bore with internal machined keyway
- HD large-bearing construction
- Encapsulated electromagnetic coil assembly
- Integrated brake assembly
- Wire lead and connector configuration as shown in product photos
Why Buy From PTO Direct USA?
- Fast USA shipping
- Fitment guarantee
- 1-year warranty
- Fitment-first product descriptions
- Clear part-number and keyway identification
- Product photos showing the actual bore, pulley, connector, and clutch construction
- Support for older and difficult-to-identify PTO clutch applications
Need Help Confirming Fitment?
Email support@ptodirectusa.com with your mower model number, serial number, original PTO clutch number, and clear photos of the old clutch. For this clutch family, a clear photo looking directly into the clutch bore and keyway is especially helpful.
FAQ
What PTO clutch replaces 5023100SM?
This HD PTO clutch is offered for applications using 5023100SM. Briggs & Stratton identifies 5023100SM with clutch number 51110100, and published replacement data also associates it with Xtreme X0488.
Is 51110100 the same replacement path as 5023100SM?
Yes. Briggs & Stratton directly identifies 5023100SM as clutch 51110100. Match the physical keyway configuration and mower application before ordering.
Is 5023100 the same clutch path?
Published Ferris, Simplicity, and Snapper replacement data places 5023100, 5023100SM, and 51110100 in the same X0488 replacement path.
What is the keyway configuration on this clutch?
This clutch uses a 1-inch bore with an internal machined keyway in the clutch hub. This is a critical fitment detail. Do not substitute a similar-looking clutch that uses a different external or integral key configuration.
What pulley diameter does this clutch use?
The published X0488 replacement specification uses an approximately 5.30-inch pulley. Also compare pulley offset and belt-groove position to the original clutch.
What direction does this PTO clutch rotate?
This clutch uses CCW rotation from the pulley side.
What is the Xtreme cross-reference for 5023100SM?
Xtreme X0488 is published as a replacement path for Ferris, Simplicity, and Snapper 5023100 / 5023100SM / 51110100 applications.
Does this clutch fit Simplicity ZT3000 mowers?
Published X0488 application data includes select Simplicity ZT3000 Series applications. Because different clutch configurations can exist within a mower series, confirm 5023100SM, 51110100, or the matching physical clutch configuration before ordering.
Does this clutch fit Snapper 355Z, 375Z, and 400Z mowers?
Published replacement data includes select Snapper 355Z, 375Z, and 400Z applications. Match the original clutch number and internal-keyway configuration before ordering.
Is this related to Ogura MA-GT-JD2?
This physical internal-keyway clutch family is closely related to the Ogura MA-GT-JD2 replacement path. If your original clutch is specifically marked MA-GT-JD2, use the dedicated MA-GT-JD2 PTO clutch listing for the clearest part-number route.
Can I order this clutch by appearance alone?
No. The internal keyway is critical. Match the original clutch number first, then confirm the 1-inch bore, keyway arrangement, approximately 5.30-inch pulley, CCW rotation, connector, pulley offset, anti-rotation setup, and belt path.
Can PTO Direct USA help confirm fitment?
Yes. Email support@ptodirectusa.com with your mower model, serial number, original clutch number, and clear photos of the old clutch, especially the clutch bore and keyway.
Getting ready to install your PTO clutch? Read the PTO Clutch Installation Guide for removal, crankshaft preparation, mounting-bolt torque guidance, wiring, burnishing, and final torque checks.
Original clutch marked MA-GT-JD2? See the dedicated MA-GT-JD2 PTO clutch listing.
Need a different clutch? Browse the full electric PTO clutch catalog.