Case 450, 550 Series Dozer Final Drive Parts

Final drive bearing and seal kits, pinion shafts, bull gears, sprocket shafts, bevel gear sets, seals, and complete final drive assemblies for Case 450, 450B, 450C, 455C, 550, and related crawler dozers.

Fits Models At A Glance

• 450 / 455 Series: 450, 450B, 450B LGP, 450C, 450C LGP, 455B, 455C
• 550 Series: 550, 550 LGP, 550E, 550E LGP, 550G, 550G LGP, 550H, 550H LGP
• 650 / 850 Series: 650, 650G, 750, 850, 850B, 850C, 850D, 850E, 850G, 850G LGP
• 1150 Series: 1150

Key Notes

• Application: Final drive components for Case 450, 550, and related crawler dozer final drive systems
• Coverage: Includes early and late final drive bearing and seal kits, pinion carrier bearing and gasket kits, top pinion shafts, bull gears in 33-spline and 38-spline configurations, sprocket shafts, bevel gears, bevel gear and pinion sets, final drive sprocket shaft seals, seal retainers, seal races, housing repair spacers, complete used and rebuilt final drives, final drive housings, and oil pans
• Function: Maintains final drive pinion, bull gear, bevel gear, and sprocket shaft function on Case 450, 550, and related crawler dozer platforms
• Fitment Note: Serial number breaks apply on 450 final drive kits and sprocket shafts — verify serial number when ordering

Why Choose Broken Tractor

• ✅ Final drive bearing and seal kits available for 450, 450B, 450C, and 550 series
• ✅ Bull gears, bevel gears, pinion shafts, and sprocket shafts all available
• ✅ Complete used and rebuilt final drive assemblies available

Frequently Asked Questions

Which final drive bearing and seal kit fits a Case 450 dozer?

It depends on the model and transmission serial number. The CS-450-EFD-KIT fits the 450 before transmission serial number 2682386, while the CS-450-LFD-KIT fits the 450 after transmission serial number 2681428 and the 450B. We also carry the G104180-KIT for the 450C, the 1342267C1-KIT for the 450C LGP and the 550, 550E, 550G and 550H (including LGP versions), and the G102682-Kit for the 450B LGP. Check your serial number before ordering, or call (800) 909-7060 to confirm the right kit.

Is the Case 450 dozer sprocket shaft different on early and late serial numbers?

Yes, the 450 uses different sprocket shafts depending on serial number. Broken Tractor offers a used 33-spline sprocket shaft (A50484) for the early 450 and a separate sprocket shaft (A51737) for late serial 450 dozers. The G105733 sprocket shaft fits the 450B and 450C, and the A50213 sprocket shaft spacer fits the 450 before serial number 3060306. Match your old part number or serial number to get the correct shaft.

Which bevel gear and pinion set fits a Case 450C or 550E dozer?

The 1997071C1 bevel gear and pinion set fits the Case 450C, 450C LGP, 550, 650, 650G, 850B, 850C and 850D. The 1348973C1 set fits the later 550E, 550G, 550H, 650G, 850E and 850G LGP. We also carry the G107897 bevel gear shaft for the 450C, 550E, 550G, 550H and several 650 and 850 series dozers.

Can a worn final drive housing seal area be repaired on a Case 450 or 550 dozer?

Yes, Broken Tractor carries the PV411 weld-on repair ring, a seal spacer for the final drive housing. It fits the Case 450, 450B, 450C, 550, 550E and 550G. We also offer the G101798 final drive housing seal for the 450, 450C, 550, 550E, 550G and 550H.

Can I replace the whole final drive on a Case 450 or 550 dozer instead of rebuilding it?

Yes, we offer complete final drive assemblies as well as the individual parts needed to rebuild one. The 1342267C1 complete final drive fits the Case 550, 550E, 550G and 550H. For the 450 and 450B, options include a used left hand final drive (G101519U), a rebuilt right final drive (G101518R) and a left final drive housing (A50563), plus a used left hand final drive (A50401U) for the early 450 before serial number 2682386.