Cat Swing Cylinder Rod Assembly for 424D, 428C, 428D, 432D & More – 1257894

Fits Models At A Glance:

• Caterpillar Backhoe Loaders:
  • 424D
  • 428C
  • 428D
  • 432D
  • 438C
  • 438D
  • 416B — Serial Number Prefix 8ZK: Serial Number 8ZK06000 to 8ZK11031

Key Notes:

• Part Numbers: 1257894, 125-7894
• Weight: 22.20 lbs (10.07 kg)
• Type: Swing cylinder rod assembly
• Supersedes: 6E-0289 (6E0289)
• Serial Number Note: Serial number breaks apply — verify your machine serial number before ordering
• Seal Kit: The seal kit is unchanged between the old and updated rod — you do not need a different seal kit
• Application: Replacement swing cylinder rod assembly for Caterpillar 424D, 428C, 428D and other backhoe loaders
• Condition: Aftermarket replacement part

Important — Updated Rod Requires Two Additional Parts:

Caterpillar updated this rod assembly, and the new rod is not compatible with the old piston and nut. If your cylinder has not been updated yet, you must order all three pieces together:

• Piston: 112-1773 (1121773) — required
• Nut: 8J-9992 (8J9992) — required

What changed:

If your cylinder has already been updated and is running the 112-1773 piston and 8J-9992 nut, you only need this rod. Check the piston and nut in your cylinder before ordering.

Common Use Case or Symptoms: Use when the swing cylinder rod is bent, scored, pitted or leaking past the seals — a damaged rod chews through new seals quickly and will not hold the swing position.

Why Choose Broken Tractor:

• ✅ Current Cat Update Level Supplied – 125-7894 replaces the superseded 6E-0289 rod
• ✅ We Tell You the Two Parts You Also Need – the 112-1773 piston and 8J-9992 nut are required when updating an older cylinder
• ✅ Fast Shipping from a U.S.-Based Team – ready to ship from our U.S. warehouses