ShareZem PTO Clutch for Kubota Mowers K3011-10050 (X0831) — 6" Pulley, 1-1/8" Bore, Sealed Harness

The ShareZem K3011-10050 (X0831) PTO clutch is a direct-fit replacement designed to restore PTO power to compatible Kubota lawn and garden tractors.

If your Kubota mower is losing PTO engagement or the clutch has failed, this replacement unit provides the same mounting points, rotation direction and electrical harness design as the original. Built with a sealed wire harness and Cool Coil technology, it matches the original equipment dimensions — including a 6" pulley diameter and 1 1/8" bore — so it installs cleanly into compatible models listed below. This product listing explains what it fits, how it works, and practical details installers and owners need to know before buying.

Which Kubota models does this PTO clutch fit?

The K3011-10050 (also referenced as K3071-10050 and X0831) was produced to replace factory clutches on a range of Kubota zero-turn and lawn tractor models. Fitment covers several model families used on residential and light-commercial mowers.

• Compatible models include: Z121SKH, Z122EBR, Z122RKW, Z125EBR, Z125SKH, Z411KW, Z411KW-3, Z421KW-3, Z421KWT-3, ZG123S, ZG124E, ZG127E, ZG127S.
• Confirm your old part number (K3011-10050 / K3071-10050 / X0831) and pulley/bore specs before ordering.
• Not universal: verify rotation direction and shaft ID match your machine.

What are the key specifications and why they matter?

This clutch mirrors the OEM mechanical and electrical characteristics so it transmits power reliably to the mower deck. Important dimensions and features determine fit and performance under load.

• Pulley diameter: 6" — matches belt path geometry used on listed Kubota decks.
• Bore/ID: 1 1/8" — ensure your spindle or shaft matches this inner diameter.
• Belt width compatibility: 1/2" or 5/8" — supports the two common belt sizes on these tractors.
• Rotation: Counter-clockwise — must match your machine’s engagement direction.
• Electrical: Integrated clutch-side harness, water-tight and impact resistant for durability.

How difficult is installation and what tools are needed?

Installation is intended to be straightforward for someone with basic mechanical experience, but professional help is recommended if you’re unfamiliar with PTO systems. The unit installs as a direct replacement with the same mounting points and electrical connector orientation.

• Typical tools: socket/ratchet set, torque wrench, pulley/belt tools as required by your model.
• No specialized calibration required beyond re-tensioning belts and confirming rotation.
• Professional installation recommended to ensure correct engagement and safety interlocks.

What warranty, returns and quality features are included?

ShareZem packages this clutch with a customer-friendly return policy and features intended to improve longevity. The listing provides a 12-month return and exchange policy for buyer protection.

• 12-month return and exchange coverage for manufacturing defects or fitment issues.
• Cool Coil technology to help manage heat during engagement cycles.
• Water-tight, impact-resistant wiring to reduce corrosion and electrical faults.

Who is this for: This PTO clutch is aimed at owners and service technicians of Kubota Z-series and ZG-series residential and commercial mowers listed above who need a faithful, OEM-dimension replacement. If your machine shows poor blade engagement, electrical clutch failure, or a seized pulley and you have confirmed the part number and specs match your tractor, this unit offers a practical repair option. Choose professional installation if you want verified torque settings, correct belt tension and tested PTO engagement before returning the mower to service.