AM133209 PTO Clutch Replacement for John Deere GX335, GX345 Serial 120001+ | Ogura GT1A-JD10

Overview

This AM133209 PTO clutch replacement is an aftermarket electric PTO clutch for select John Deere lawn and garden tractor applications, including John Deere 325, GX325, GX335, and GX345. It is the later 1-inch bore clutch path used on specific serial-number applications.

This clutch replaces John Deere AM133209, AM126101, and AM131778, and cross-references Ogura GT1A-JD10 and Xtreme X0422.

Built with a 1-inch crankshaft bore, 5-5/16 inch pulley diameter, counter-clockwise rotation, and pulley compatibility for 1/2 inch or 5/8 inch belts, this clutch is designed to restore reliable mower deck blade engagement when matched to the correct tractor, serial range, and original clutch number.

Key Features

• Aftermarket electric PTO clutch replacement for listed John Deere applications
• Crankshaft Bore: 1"
• Pulley Diameter: 5-5/16"
• Belt Width: accepts 1/2" or 5/8" belt
• Rotation: CCW from pulley side
• Integrated brake assembly for controlled blade stopping
• Fully assembled and ready to install

Compatible Brands & Models

This PTO clutch fits select John Deere 300 Series and GX Series lawn and garden tractors. Fitment depends on serial number, original clutch number, and crankshaft bore.

Confirmed John Deere Applications

• John Deere 325: serial number 070,001 and higher
• John Deere GX325: verify specs and clutch number if available
• John Deere GX335: serial number 120,001 and higher
• John Deere GX345: serial number 120,001 and higher

Other John Deere Applications to Verify

• John Deere 335: verify original clutch number and 1-inch crankshaft bore before ordering
• John Deere 345: verify original clutch number and 1-inch crankshaft bore before ordering
• John Deere GX355: verify original clutch number, serial range, and crankshaft bore before ordering

Serial number note: Do not choose this clutch by model number alone. If your original clutch is marked AM133209, AM126101, AM131778, GT1A-JD10, or X0422, this is the correct replacement path. However, carefully match specs if relying on model information alone.

Replaces OEM Part Numbers

• John Deere: AM133209
• John Deere: AM126101
• John Deere: AM131778

Supersession note: AM133209 is commonly used as the replacement path for AM126101 and AM131778 on compatible John Deere applications. Always confirm by the original clutch number, tractor serial number, and crankshaft bore.

Cross-Reference Aftermarket Numbers

• Ogura: GT1A-JD10
• Xtreme: X0422
• Stens: 255-910X
• Additional reference: 19-422

What’s Included

• Complete electric PTO clutch assembly
• Factory-balanced 5-5/16" pulley
• Pre-installed bearing assembly
• Encapsulated electromagnetic coil
• Integrated brake assembly
• Wiring lead and connector as shown in product photos

Why Buy From PTO Direct USA?

• Fast USA shipping
• fitment guarantee
• 1-year warranty
• Fitment-first product support
• Clear product images for easier clutch identification
• Trusted replacement supplier for homeowners, repair shops, and mower service professionals

FAQ

Does AM133209 fit a John Deere GX335?

Yes. This clutch fits John Deere GX335 applications with serial number 120,001 and higher. If your GX335 is serial number 120,000 or lower, check the AM131779 clutch family instead.

Does AM133209 fit a John Deere GX345?

Yes. This clutch fits John Deere GX345 applications with serial number 120,001 and higher. Later GX345 tractors commonly use the 1-inch bore AM133209 path, while earlier tractors commonly use the 1-1/8 inch bore AM131779 path.

Does AM133209 fit a John Deere 325?

Yes. This clutch is listed for John Deere 325 tractors with serial number 070,001 and higher. Confirm the original clutch number before ordering.

Does AM133209 fit a John Deere 335 or 345?

Some aftermarket catalogs list this clutch for John Deere 335 and 345 applications, but serial range and original clutch number matter. Confirm your original clutch number and verify a 1-inch crankshaft bore before ordering.

Does AM133209 fit a John Deere GX355?

GX355 fitment can vary across catalogs. Before ordering for a John Deere GX355, verify the original clutch number, serial range, and crankshaft bore. This clutch uses a 1-inch bore.

What is the difference between AM133209 and AM131779?

The key difference is the crankshaft bore. AM133209 uses a 1-inch bore. The earlier AM131779 clutch family commonly uses a 1-1/8 inch bore. These clutches are not interchangeable if the crankshaft size is different.

Does AM133209 replace AM126101?

Yes. AM133209 is commonly used as the replacement path for AM126101 on compatible John Deere applications.

Is Ogura GT1A-JD10 the same fitment as AM133209?

Ogura GT1A-JD10 is the Ogura reference commonly associated with the John Deere AM133209 clutch family.

Is Xtreme X0422 the same fitment as AM133209?

Xtreme X0422 is an aftermarket cross-reference for the John Deere AM133209 PTO clutch family.

What bore size does AM133209 use?

This clutch uses a 1-inch bore. If your mower has a 1-1/8 inch crankshaft, this clutch is not correct.

What belt width does this clutch use?

This clutch pulley is commonly listed for 1/2 inch or 5/8 inch belt applications. Confirm your deck belt and original pulley style before ordering.

What are common signs of a failing PTO clutch?

Common symptoms include mower blades not engaging, the PTO clutch clicking but the blades not spinning, slipping under load, intermittent blade engagement, or blades slowing down after the mower heats up. A worn coil can work cold, then weaken after 10 to 30 minutes of mowing.

Can PTO Direct USA help me confirm fitment?

Yes. Email support@ptodirectusa.com with your mower model number, serial number, deck size, original clutch number, and clear photos of the old clutch. For the best fitment help, include photos of the clutch label or stamped number, wiring connector, pulley, anti-rotation bracket, and crankshaft area.

Need installation help? Read the PTO clutch installation guide.

Need a different John Deere clutch? Browse the John Deere PTO clutch collection or the full electric PTO clutch catalog.