Final Drive Pinion Shaft for John Deere 450B–455E Dozers & Loaders – T31999

Fits Models At A Glance:

• John Deere Crawler Dozers: 450B, 450C, 450D, 450E — Standard Track, Before Serial Number 719252
• John Deere Crawler Loaders: 455D, 455E

Key Notes:

• Part Numbers: T31999, T19252
• Weight: 14.00 lbs (6.35 kg)
• Teeth: 12
• Splines: 23
• Length: 8-3/4 in (222 mm)
• Material: Precision-machined hardened steel
• Quantity Required: Two (2) per machine — one per side
• Type: Final drive pinion shaft
• Serial Number Note: Fits 450B, 450C, 450D, and 450E Standard Track Before Serial Number 719252 — 450E Standard Track After Serial Number 719253 uses T81193; 450E Long Track uses a different pinion; verify your serial number and track type before ordering
• Application: Transmits power through the final drive on mid-series John Deere crawler dozers and loaders; meshes with the final drive bull gear to drive the sprocket shaft

Common Use Case or Symptoms:
Use when the final drive is noisy, has worn or chipped pinion teeth, or is being rebuilt — a worn pinion shaft causes power loss, noise, and accelerated bull gear wear. Replace in pairs and inspect the mating bull gear during service.

Why Choose Broken Tractor:

✅ Serial-Number-Specific Fit — correct pinion for 450B–450E standard track before serial 719252, so you order the right shaft for your machine
✅ Fast Shipping from a U.S.-Based Team — in-stock and ready to ship from our U.S. warehouses