JD 450, 450B, 450C, 550, 650 Final Drive Parts

Final drive rebuild kits, bull gears, pinion shafts, axle shafts, seals, and housings for John Deere 450 through 650 series dozers, covering new and used components across multiple track and serial number configurations.

Fits Models At A Glance

• 450 Series: 450, 450B, 450C, 450D, 450E, 450G, 450J, 450K
• 550 Series: 550, 550A, 550B, 550G, 550J, 550K
• 650 Series: 650, 650B, 650G, 650J, 650K

Key Notes

• Application: Final drive assemblies, bull gears, pinion and axle shafts, and rebuild kits
• Fitment: Coverage varies by track type and serial number break
• Condition: New replacement and inspected used components available
• Seals: Double seal axle designs for improved contamination protection

Why Choose Broken Tractor

• ✅ Deep inventory of new and used final drive parts
• ✅ Fast shipping from two US warehouses
• ✅ Fitment support by serial number and track type

Frequently Asked Questions

How do I know which final drive pinion shaft fits my John Deere 450E?

Pinion shaft fitment on the 450E splits at a serial number break. Broken Tractor carries T31999 for 450E Standard Track before S/N 719252 and T81193 for 450E Standard Track after S/N 719253. Check your serial number and match it to the part number, or confirm with our parts team before ordering.

What is in a John Deere 450C final drive rebuild kit?

Our final drive bearing and seal kits for the 450C include the bearings, seals, and races needed to service the final drive. SKU T31998-KIT covers 450B and 450C, while AT31047-KIT covers 450C through 455E applications. Match the kit to your specific model and serial number since coverage varies by configuration.

Which final drive bull gear fits a John Deere 450B versus a 450C?

The correct bull gear depends on spline count. Broken Tractor offers a 68 tooth, 25 spline bull gear (T112137, T161934) for the 450B and 450C, and a 68 tooth, 64 spline bull gear (T112130) for 450C, 450D, 450E, and 455 series units. Confirm your spline count to order the right gear.

Does the used final drive axle shaft fit any 450C dozer?

The used final drive axle shaft (T61032, T32000) fits the 450B and the 450C before serial number 35666. If your 450C is at or after that serial number break, this shaft will not fit. Verify your serial number before ordering.

What final drive axle seal fits John Deere 450 through 650 dozers?

Broken Tractor carries a double seal design axle seal (AT72157) that fits a wide range of models including the 450, 450B, 450C, 450D, 450E, 450G, 450J, 450K, 550B, 550G, 550J, 550K, 650G, 650J, and 650K. The double seal design helps improve contamination protection at the axle.