Hydrostatic Drive Motor Gearbox Magnetic Plug w/ O-Ring for John Deere 319D–333G – AT388629

Fits Models At A Glance:

• John Deere Skid Steer Loaders: 319D, 319E, 323D, 323E, 329D, 329E, 333D, 333E
• John Deere Compact Track Loaders: 325G, 333G

Key Notes:

• Part Number: AT388629
• Weight: 0.01 lbs
• Type: Magnetic oil plug with O-ring — fits the gear housing of the Torque Hub hydrostatic drive motor (not the end cover)
• Application: Seals the oil drain/fill port on the drive motor gear housing and captures ferrous metal wear particles in suspension via integrated magnet, preventing circulating debris from causing accelerated gear and bearing wear inside the final drive
• Sold Individually — one plug per listing; two drive motors per machine (one per side)
• Origin: Made in USA
• Manufacturer: PVE Products

Common Use Case or Symptoms:
Use during drive motor oil changes, after final drive service, or when replacing a damaged, stripped, or missing plug — a leaking or absent plug causes gear oil loss and allows contamination into the drive motor housing, leading to premature final drive failure.

Why Choose Broken Tractor:
✅ Magnetic Design Captures Wear Particles — the integrated magnet pulls ferrous debris out of circulation during normal operation, protecting gears and bearings between service intervals
✅ Made in USA by PVE Products — correct O-ring included for a leak-free seal at the Torque Hub gear housing port
✅ Fast Shipping from a U.S.-Based Team — in-stock and ready to ship from our U.S. warehouses