JD 420, 430, 440 Dozer Final Drive Parts

JD 420, 430, 440 Dozer Final Drive Parts parts list
Image	Fits Model	Description	Details	Part #	Price	Product Details
	See Details	420, 440 Before Serial # 456800	Final Drive Bearing and Seal Kit		AT17724-KIT	$215.00	View Info
	See Details	440 (After Serial # 456801)	Final Drive Bearing and Seal Kit		AT17725-KIT	$215.00	View Info

Final drive rebuild kits and drive components for John Deere 420, 430, and 440 crawler dozers, with coverage split across early and late serial number breaks for accurate fitment.

Fits Models At A Glance

420 Series: 420 (Before SN 456800)
430 Series: 430
440 Series: 440 (Before SN 456800), 440 (After SN 456801)

Key Notes

Application: Rebuild kits restore worn final drive assemblies on early crawler dozers
Serial Break: Fitment differs before and after serial number 456800/456801
Kit Contents: Bearings, seals, and related hardware for a complete rebuild
Verify Fit: Match your machine serial number before ordering

Why Choose Broken Tractor

✅ Serial-specific kits for correct final drive fitment
✅ Fast shipping from two US warehouses
✅ Knowledgeable support for older JD crawlers

Frequently Asked Questions

What final drive rebuild kits are available for a John Deere 420 dozer?

Broken Tractor carries the Final Drive Rebuild Kit for JD 420, 440 Dozers (SKU AT17724-KIT), which fits the 420 before serial number 456800. This kit includes bearings, seals, and related hardware for a complete final drive rebuild. Match your machine serial number before ordering to confirm the correct fit.

Which final drive kit fits a John Deere 440 dozer by serial number?

It depends on your serial number break. The Final Drive Rebuild Kit SKU AT17724-KIT fits the 440 before serial number 456800, while SKU AT17725-KIT fits the 440 after serial number 456801. Check your machine serial number and match the part number so you order the right kit.

What is included in a JD 440 final drive rebuild kit?

The final drive rebuild kits for these John Deere crawler dozers include bearings, seals, and related hardware needed for a complete final drive rebuild. These kits are meant to restore worn final drive assemblies on early crawlers. Confirm your serial number before ordering to be sure the kit contents match your machine.

Do John Deere 420, 430, and 440 dozers use the same final drive parts?

Not always, because fitment differs by model and serial number. The kits Broken Tractor offers are split across an early and late serial break at 456800/456801, so the correct part depends on your specific machine. Match your serial number to the part number, or call our parts team at (800) 909-7060 to confirm the right kit.