MA-GT-JD2 PTO Clutch Replacement for Older John Deere 111 with External Crankshaft Key
MA-GT-JD2 PTO Clutch Replacement for Older John Deere 111 with External Crankshaft Key
Overview
This aftermarket MA-GT-JD2 electric PTO clutch is a replacement for select older John Deere 111 and other lawn tractors using the original Ogura MA-GT-JD2 or MAGTJD2 keyed-clutch path.
This replacement is designed for a 1-inch keyed crankshaft. The engine crankshaft must have a keyseat with an external drive key, and the clutch bore must have the matching internal keyway. The supplied clutch uses an approximately 5.32-inch / 5-5/16-inch pulley, CCW rotation from the pulley side, and a 120 ft-lb aftermarket torque rating.
Key Features
- Aftermarket electric PTO clutch assembly
- Primary Original Clutch Number: Ogura MA-GT-JD2
- Alternate Number Format: MAGTJD2
- Crankshaft Bore: 1 inch
- Keyway Configuration: internal keyway in clutch bore
- Pulley Diameter: approximately 5.32 inch / 5-5/16 inch
- Rotation: CCW from pulley side
- Belt Compatibility: 1/2-inch or 5/8-inch V-belt path
- Aftermarket Rated Torque: 120 ft-lbs
- Original Reference Torque Path: 95 ft-lbs
- Connection Type: clutch-side wire lead and connector as pictured
- Clutch Type: electric PTO clutch with integrated brake
- Complete assembled replacement clutch
Torque warning: The 120 ft-lb figure is the clutch torque rating. It is not the crankshaft mounting-bolt torque. Use the mower or engine service manual for the correct installation-bolt specification.
Compatible Brands & Model Series
This is a part-number-first replacement for equipment using the original Ogura MA-GT-JD2 configuration.
John Deere Applications
- John Deere 111: select older lawn tractor models using an original Ogura MA-GT-JD2 clutch
John Deere 111 fitment warning: Not every John Deere 111 uses this clutch. If your crankshaft has an internal keyway grove requiring an external key on the clutch side your correct part is the AM100979 / Warner 5215-35 PTO clutch.
Replaces OEM & Manufacturer Part Numbers
- Ogura: MA-GT-JD2, MAGTJD2
John Deere number note: This listing does not claim a specific John Deere OEM clutch number. The verified buyer path is based on the original Ogura MA-GT-JD2 marking and the matching keyed physical configuration. This Ogura manufacture part number can span multiple brands such as John Deere, Cub Cadet and others.
Aftermarket Cross-Reference Numbers
- Xtreme: X0488A, X0491A
- Stens: 255-644X
Cross-reference note: Current aftermarket catalogs may route MA-GT-JD2 through more than one Xtreme package number. Match the original Ogura number and complete physical configuration instead of ordering from an Xtreme number alone.
Before Ordering
- Match the original clutch number to MA-GT-JD2 or MAGTJD2
- Confirm a 1-inch engine crankshaft
- Confirm the crankshaft has a machined keyseat
- Confirm an external drive key is used between the crankshaft and clutch hub
- Confirm the original clutch bore has a matching internal keyway
- Confirm an approximately 5.32-inch / 5-5/16-inch pulley
- Confirm CCW rotation from the pulley side
- Confirm the 1/2-inch or 5/8-inch deck-belt path
- Compare pulley offset and deck-belt alignment
- Compare the wire lead, connector, terminal orientation, and polarity
- Compare the clutch housing, mounting position, and anti-rotation setup
- Confirm available clearance around the pulley, frame, belt, and clutch housing
- Do not install, alter, or wire the clutch until fitment is confirmed
Key and hardware warning: Do not assume the crankshaft key, mounting bolt, washer, spacer, mower-side wiring, or other tractor-specific hardware is included unless it is clearly shown in the product photos.
Common Symptoms of a Failing PTO Clutch
- Blades will not engage when the PTO switch is activated
- The clutch clicks but the mower deck does not begin turning
- Blades engage when cold and stop after the clutch heats up
- The clutch slips or loses blade speed under load
- The deck belt squeals, smokes, or overheats during engagement
- Burning smell near the engine crankshaft or clutch
- Grinding, rumbling, or excessive pulley-bearing noise
- Intermittent blade engagement
- Visible heat damage near the clutch coil or connector
- Movement, wear, or damage at the crankshaft key and clutch-bore keyway
A weak battery, charging-system problem, damaged PTO switch, poor ground, damaged wiring, worn drive key, damaged crankshaft keyseat, slipping belt, seized spindle, or dragging idler can produce similar symptoms. Diagnose the complete electrical and deck-drive system before replacing the clutch.
What’s Included
- 1 complete aftermarket electric PTO clutch assembly
- Integrated approximately 5.32-inch pulley
- Integrated electromagnetic coil and brake assembly
- Clutch-side wire lead and connector as pictured
- Pre-installed pulley-bearing assembly
Not automatically included: crankshaft drive key, crankshaft bolt, washer, spacer, mower-side wiring, mounting hardware, belt, or tractor-specific brackets unless shown in the product photos.
Why Buy From PTO Direct USA?
- Part-number-first PTO clutch listings
- Clear keyed-bore and smooth-bore fitment separation
- Fitment-focused product descriptions
- Fast USA shipping
- 1-year warranty
- Support for mower owners, repair shops, and vintage tractor owners
Need Help Confirming Fitment?
Send PTO Direct USA the complete tractor model, serial number, engine model, &/or original clutch number before ordering.
FAQ
What PTO clutch replaces Ogura MA-GT-JD2?
This aftermarket electric PTO clutch replaces Ogura MA-GT-JD2, also written as MAGTJD2, when the original physical keyed-bore configuration matches.
Does this PTO clutch fit an older John Deere 111?
It fits select older John Deere 111 lawn tractors using an original Ogura MA-GT-JD2 clutch, a 1-inch crankshaft with an external drive key to match the internal keyway in the clutch bore. It does not fit every John Deere 111.
What size bore does the MA-GT-JD2 clutch use?
This clutch uses a 1-inch bore with an internal keyway.
What pulley diameter does this clutch use?
The published MA-GT-JD2 replacement path uses an approximately 5.32-inch / 5-5/16-inch pulley.
What direction does this clutch rotate?
This clutch uses CCW rotation from the pulley side.
What belt width does this clutch support?
The published replacement path supports compatible applications using a 1/2-inch or 5/8-inch V-belt. Confirm the original belt groove and deck-belt alignment before installation.
Is MA-GT-JD2 the same as AM100979 or Warner 5215-35?
No. The MA-GT-JD2 path uses a keyed clutch bore for a crankshaft with an external drive key. The AM100979 / Warner 5215-35 listing is a separate keyway style clutch path.
What is the clutch torque rating?
The current aftermarket replacement is rated at 120 ft-lbs, compared with the original 95 ft-lb reference path.
Is 120 ft-lbs the mounting-bolt torque?
No. The 120 ft-lb figure is the clutch torque rating. Follow the tractor or engine service manual for the correct crankshaft mounting-bolt torque.
Can I order this clutch by appearance alone?
No. Similar-looking clutches can use different bore styles, keyways, pulley diameters, offsets, connectors, mounting configurations, and torque ratings. Match the original MA-GT-JD2 number and keyed configuration first.