Cat 320D, 325D, 325D L, 328D LCR, 329D, 329D L Excavator Boom Cylinder Seal Kit 2344566

Fits Models At A Glance:

• Caterpillar Excavators: 320D, 325D, 325D L, 328D LCR, 329D, 329D L

Key Notes:

• Supersession: 4560200 is the current Cat number and replaces the earlier 2344566.
• Part Number(s): 2344566 (234-4566)
• Application: Seal kit for the boom cylinder
• Cat Cylinder Groups: Boom cylinder & seal groups 266-7935 (325D / 325D L DBH00001-UP), 225-4584 (320D GKS00001-UP) and 289-7752 (325D L H3N00001-UP)
• Quantity: Reseals one cylinder — order two for both boom cylinders
• Serial Number Notes: Cataloged across the listed models without a serial break. Sister kits: 2344587 bucket and 2478792 stick on the same models; 2344576 / 3500974 / 3500975 are later boom kits that add the 320E/329E — match your cylinder gp.
• Condition: Aftermarket replacement part

Common Use Case or Symptoms:

Use when the boom settles when parked, leaks at the boom cylinder gland, or lift force fades on a Cat 320D, 325D or 329D.

Why Choose Broken Tractor:

• ✅ Boom kit, clearly labeled — Boom, stick and bucket kits carry near-identical numbers on these excavators — we say which is which and list the sisters.
• ✅ 6 models covered — One Cat kit for the machines listed above.
• ✅ Fast Shipping from a U.S.-Based Team — ready to ship from our U.S. warehouses.