00200665 PTO Clutch Replacement for Ariens & Gravely | Replaces Ogura GT1A-HU02, 00899800

Overview

This 00200665 PTO clutch replacement is an aftermarket electric PTO clutch for select Gravely and Ariens mower applications using the Ogura GT1A-HU02 clutch path. It replaces Gravely / Ariens 00200665 and superseded numbers 00899800 and 200665.

This clutch is commonly associated with select Gravely ZT HD, Pro-Walk, Pro-Stance, Ariens Max Zoom, Ariens Professional Walk, and related commercial mower platforms. Fitment can vary by model, serial number, wiring setup, and mounting hardware, so always confirm the original clutch number before ordering.

Built with a 1-inch crankshaft bore, CCW rotation from the pulley side, and a dual-profile V-groove pulley design, this clutch is engineered to restore smooth PTO engagement and reliable mower deck operation.

Key Features

• Aftermarket electric PTO clutch replacement for Ariens and Gravely applications
• Replaces OEM Numbers: 00200665, 00899800, 200665
• Ogura Reference: GT1A-HU02
• Crankshaft Bore: 1 inch
• Rotation: CCW from pulley side
• Voltage: 12V electric PTO clutch
• Pulley Style: Dual-profile V-groove pulley design
• Belt Path: Commonly referenced with 1/2-inch and 5/8-inch belt applications
• Encapsulated electromagnetic coil for dependable engagement
• High-temperature bearing design for demanding mower deck use
• Fully assembled and ready to install

Compatible Brands & Model Series

This PTO clutch is intended for select Ariens and Gravely mower platforms using the 00200665 / Ogura GT1A-HU02 clutch path.

Common compatible model families may include:

• Gravely ZT HD Series: select ZT HD 44, ZT HD 48, ZT HD 52, and ZT HD 60 applications using 00200665
• Gravely Pro-Walk: select gear-drive and hydro walk-behind applications
• Gravely Pro-Stance: select stand-on mower applications using the GT1A-HU02 clutch path
• Ariens Max Zoom: select Max Zoom and Max Zoom HD applications
• Ariens Professional Walk: select commercial walk-behind mower applications
• Ariens Surfer / Scorpion: select stand-on mower applications using the same clutch specification

Important: Do not order by model name alone. Match the OEM number on your original clutch first, then confirm bore size, pulley setup, rotation, connector style, wire length, anti-rotation setup, belt width, and mower serial number.

Replaces OEM Part Numbers

• Gravely: 00200665, 00899800, 200665
• Ariens: 00200665, 00899800
• Ogura: GT1A-HU02

Related Ogura GT1A-HU02 Fitment Guide

This Ariens / Gravely listing covers the 00200665, 00899800, and 200665 side of the Ogura GT1A-HU02 clutch family.

The same Ogura clutch family is also commonly searched under Husqvarna 539112233, John Deere TCA20484, Snapper 885443, and Simplicity 885443YP.

For the full cross-reference map, pulley measurement explanation, and Gravely serial-number split, see the Ogura GT1A-HU02 PTO Clutch Fitment Guide.

If you are replacing a clutch on a Husqvarna, John Deere, Snapper, Simplicity, AYP, Craftsman, Dixon, or Jonsered mower, see the 539112233 PTO Clutch Replacement for Husqvarna & John Deere for that brand-side fitment path.

Important Gravely 991084 Serial Number Check

If you are replacing the PTO clutch on a Gravely 991084 ZT HD 60, check your serial number before ordering. This 00200665 / Ogura GT1A-HU02 clutch path is for the early serial range only.

Do not order this 00200665 clutch for later Gravely 991084 serial ranges unless your original clutch number confirms the match. Later serial ranges route to 04387900, which may use a different plug, harness length, or installation setup.

Fitment check: Match the original clutch number first, then confirm mower serial number, connector style, wire length, anti-rotation setup, mounting bolt requirements, bore size, pulley profile, and belt path before ordering.

Pulley Measurement Note

You may see different pulley measurements online for the GT1A-HU02 clutch path, including measurements around 5-5/16 inch, 5-15/16 inch, 6.00 inch, or 6.10 inch.

This can happen because V-groove PTO clutch pulleys may be measured at different points. A narrower belt can ride deeper in the groove, while a wider belt can ride higher. Some listings measure the effective belt contact area, while others measure the outer pulley flange.

Fitment rule: Match the original clutch part number first, then confirm bore size, belt width, connector style, anti-rotation setup, and pulley geometry before ordering.

Before Ordering

Before ordering this Ariens / Gravely PTO clutch replacement, confirm:

• Original clutch part number is 00200665, 00899800, 200665, or Ogura GT1A-HU02
• Crankshaft bore is 1 inch
• Rotation is CCW from pulley side
• Connector style matches or can be safely connected
• Wire harness can be routed safely away from moving and hot parts
• Anti-rotation slot and anchor setup match your mower
• Belt width and pulley profile match your mower deck belt path
• Mounting bolt length is correct for your engine crankshaft
• Mower model and serial number support this clutch path

Do not order by appearance alone. Similar-looking PTO clutches can have different pulley offsets, wire lengths, bolt requirements, torque ratings, or anti-rotation setups.

What’s Included

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

Note: Mounting hardware may vary by supplier. Reuse the correct factory mounting bolt when required by your mower and engine setup.

Why Buy From PTO Direct USA?

• Fast USA shipping
• Fitment guarantee 
• 1-year warranty
• Fitment-first product descriptions
• 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, and mower ID tag before ordering.

FAQ

Does this replace Gravely 00200665?

Yes, this listing is built for the Gravely / Ariens 00200665 clutch path, which is commonly referenced as Ogura GT1A-HU02. Confirm your original clutch number before ordering.

Does this replace Ariens 00899800?

Yes, 00899800 is commonly treated as a superseded Ariens / Gravely number that routes to 00200665 and the Ogura GT1A-HU02 clutch path.

Why do different listings show different pulley diameters?

The GT1A-HU02 clutch path may be listed with different pulley measurements because sellers measure different points of the V-groove pulley. Some measure the belt contact area, while others measure the outside flange. Match the original clutch number and confirm the physical setup before ordering.

Does this fit every Gravely ZT HD mower?

No. Some Gravely ZT HD models have a serial-number split between the earlier 00200665 / Ogura GT1A-HU02 path and the later 04387900 / Ogura GT1A path. Confirm your serial number and original clutch number before ordering.

Can I use this if my mower originally used 04387900?

No. If your mower parts diagram or original clutch points to 04387900, use the 04387900 PTO clutch replacement instead. The plug, harness length, or installation setup may differ from the earlier 00200665 / GT1A-HU02 path.

What should I check before replacing the PTO clutch?

Check the PTO switch, battery voltage, wiring, fuse, ground, deck belt routing, spindle drag, idler pulleys, and clutch connector before replacing the clutch.

Need a different clutch? Browse all electric PTO clutches, or shop by brand: Gravely PTO clutches | Ariens PTO clutches.