K3011-10050 PTO Clutch Replacement for Kubota Z-Series | Replaces K3071-10050, Ogura GT1A-EH01

Overview

This K3011-10050 PTO clutch replacement is an aftermarket electric PTO clutch for select Kubota Z-Series zero-turn mowers, Kubota ZG-Series mowers, and select Kubota T-Series lawn tractors using the K3011-10050 / K3071-10050 / Ogura GT1A-EH01 clutch path.

It replaces Kubota K3011-10050, Kubota K3071-10050, and Ogura GT1A-EH01 clutch references.

This clutch is commonly associated with select Kubota Z100, Z200, Z400, ZG, and T-Series applications. Fitment can vary by model, serial number, deck size, engine package, wiring connector, and production configuration, so always confirm the original clutch number before ordering.

Built with a 1-1/8 inch crankshaft bore, 6.00-inch pulley, CCW rotation from the pulley side, and a 12V electric PTO clutch design, this replacement is intended for mower applications that originally used the Kubota K3011-10050 clutch family.

Key Features

• Electric PTO clutch replacement for select Kubota mower applications
• Replaces Kubota Numbers: K3011-10050, K3071-10050
• Ogura Reference: GT1A-EH01, GT1AEH01
• Crankshaft Bore: 1-1/8 inch
• Pulley Diameter: 6.00 inches
• Rotation: CCW from pulley side
• Voltage: 12V electric PTO clutch
• Connector Style: 2-wire pigtail harness with white 2-pin plug
• Belt Compatibility: commonly used with 1/2-inch or 5/8-inch V-belt applications
• Designed for dependable mower deck engagement when matched to the correct OEM clutch path
• Fully assembled and ready to install after fitment verification

Compatible Brands & Model Series

This PTO clutch is intended for select Kubota mower platforms using the K3011-10050 / K3071-10050 / Ogura GT1A-EH01 clutch path.

Kubota Z100 Series Applications

• Z121SKH: select 48-inch applications
• Z122EBR: select 48-inch applications
• Z122RKW: select 42-inch applications
• Z125EBR: select 54-inch applications
• Z125SKH: select 54-inch applications

Kubota Z200 Series Applications

• Z231BR: select 48-inch applications
• Z231KH: select 48-inch applications
• Z231KW: select 42-inch applications
• Z232KW: select applications using the K3011-10050 clutch path
• Z251BR: select 54-inch applications
• Z251KH: select 54-inch applications

Kubota Z400 Series Applications

• Z411KW: select 48-inch applications
• Z411KW-3: select applications using the K3011-10050 clutch path
• Z411KWNC: select applications using the K3011-10050 clutch path
• Z412KW: select applications using the K3011-10050 clutch path
• Z412KWNC: select applications using the K3011-10050 clutch path
• Z421KW: select 54-inch applications
• Z421KW-3: select applications using the K3011-10050 clutch path
• Z421KWT-3: select applications using the K3011-10050 clutch path
• Z421KWT-60: select 60-inch applications
• Z422KW: select applications using the K3011-10050 clutch path
• Z422KWT: select applications using the K3011-10050 clutch path

Kubota ZG Series Applications

• ZG123S: select applications using the K3011-10050 clutch path
• ZG124E: select applications using the K3011-10050 clutch path
• ZG127E: select applications using the K3011-10050 clutch path
• ZG127S: select applications using the K3011-10050 clutch path

Kubota T Series Applications

• T2090BR: select applications using the K3011-10050 clutch path
• T2290KWTNC: select applications using the K3011-10050 clutch path

Important: Match the OEM part number or manufacturer part number on your original clutch whenever possible. Then confirm bore size, pulley diameter, rotation, and connector style before ordering. If you are relying on model information alone and cannot confirm the original clutch number, contact support before purchasing.

Replaces OEM Part Numbers

• Kubota: K3011-10050, K3071-10050
• Ogura: GT1A-EH01, GT1AEH01

Supersession note: Kubota K3071-10050 is commonly treated as the earlier clutch path superseded by K3011-10050. Confirm your original clutch number, mower model, and physical specs before ordering.

Aftermarket Cross-Reference Numbers

• Xtreme: X0831
• Rotary: 17685
• HD Switch: GT1A-EH01 replacement path
• 8TEN: Gen 3 K3011-10050 replacement path
• The ROP Shop: 101630 / GT1A-EH01 replacement path

Before Ordering

Before ordering this K3011-10050 PTO clutch replacement, confirm:

• Original clutch number matches K3011-10050, K3071-10050, or Ogura GT1A-EH01
• Crankshaft bore is 1-1/8 inch
• Pulley diameter is 6.00 inches
• Rotation is CCW from pulley side
• Belt width and pulley profile match your mower deck belt path
• Connector style and wire lead match or can be safely connected
• Anti-rotation setup aligns correctly with your mower
• Mower model, serial number, deck size, and engine package support this clutch path

Do not install or test-mount the clutch until fitment is confirmed. Installation marks can affect return eligibility.

Common Symptoms of a Failing PTO Clutch

• Blades will not engage when the PTO switch is activated
• PTO clutch clicks but the mower deck does not start
• Deck engagement slips under load
• Blades engage cold but stop after the mower heats up
• Fuse blows when the PTO is engaged
• Burning smell near the clutch or belt area
• Grinding, rattling, or bearing noise near the clutch
• Visible heat damage, wobble, or bearing play

Before replacing the clutch, also check the PTO switch, battery voltage, fuse, ground, wiring connector, deck belt routing, spindle drag, idler pulleys, and belt condition.

Installation and Burnishing Note

New electric PTO clutches may require a proper burnishing procedure after installation. Burnishing helps seat the friction surfaces so the clutch can develop full holding power under load.

After installation, cycle the clutch on and off at moderate engine speed with no cutting load. Avoid immediately engaging the deck at full throttle in heavy grass before the clutch has been properly seated.

For removal tips, wiring checks, torque guidance, and burnishing steps, read the PTO Clutch Installation Guide before installation.

What’s Included

• Complete electric PTO clutch assembly
• Pre-installed 6.00-inch pulley assembly
• Encapsulated electromagnetic coil
• Pre-installed bearings
• Wiring lead / connector assembly

Why Buy From PTO Direct USA?

• Fast USA shipping
• Fitment guarantee
• 1-year warranty
• Fitment-first product descriptions
• Clear part-number routing for mower clutch replacements
• Real-world replacement support for homeowners, repair shops, and commercial mower owners

Need Help Confirming Fitment?

If you are unsure whether this clutch fits your mower, send us your mower model, serial number, original clutch number, and clear photos of the clutch label, wiring connector, pulley, anti-rotation setup, crankshaft area, and mower ID tag before ordering.

FAQ

Does this replace Kubota K3011-10050?

Yes, this listing is built for the Kubota K3011-10050 PTO clutch path. Confirm your original clutch number and physical specs before ordering.

Does this replace Kubota K3071-10050?

Yes, K3071-10050 is commonly treated as the earlier clutch path superseded by K3011-10050. Confirm your mower model, serial number, and original clutch number before ordering.

What Ogura number does this replace?

This clutch path is commonly associated with Ogura GT1A-EH01, also searched as GT1AEH01.

What bore size does this clutch use?

This clutch path uses a 1-1/8 inch crankshaft bore. Do not order this clutch for applications that require a 1-inch or 7/8-inch bore.

What pulley size does this clutch use?

This listing uses a 6.00-inch pulley. Do not substitute a similar-looking Kubota clutch with a smaller 5-3/8 inch pulley unless your original clutch number confirms that path.

Does this fit Kubota TG1860 or TG1860G?

No. Kubota TG1860 and TG1860G applications commonly use the K1211-32010 / K1211-32011 clutch path, which is different from this K3011-10050 listing.

Does this fit Kubota Z723, Z724, or Z725 models?

Do not assume fitment on Kubota Z700 models. Some Z700 applications use the K3881-10140 clutch path with a smaller 7/8 inch bore. Check your official Kubota parts diagram and original clutch number before ordering.

Is K3011-10050 the same as K3011-10030 or K3011-10040?

No. K3011-10050 is a PTO clutch. K3011-10030 and K3011-10040 are transaxle-related part numbers and are not PTO clutches.

Does this fit every Kubota Z-Series mower?

No. Kubota uses different PTO clutch paths depending on model, serial number, deck size, engine package, wiring setup, and production configuration. Match the OEM or Ogura clutch number whenever possible.

What should I check before replacing the PTO clutch?

Check the original clutch number, crankshaft bore, pulley diameter, rotation, connector style, anti-rotation setup, mounting hardware, deck belt routing, PTO switch, battery voltage, fuse, and ground before replacing the clutch.

Need a different fitment? Browse the full electric PTO clutch catalog to view all available replacement options.