Dipper Arm at Boom Spacer Bushing for Hitachi EX150 & John Deere 590D Excavators | 4163454

Fits Models At A Glance:

• Hitachi Excavators: EX150
• John Deere Excavators: 590D

Key Notes:

• Part Number: 4163454
• Supersedes: TH104460 (prior part number — 4163454 is the current replacement)
• Type: Dipper arm at boom spacer bushing
• Manufactured: Made in the USA
• Sold: Individually — one bushing per order
• Condition: Aftermarket replacement part

Common Use Case or Symptoms: Use when the dipper arm at boom spacer bushing is worn, collapsed, or causing excessive play at the boom-to-arm pivot — worn spacer bushings at this position allow the dipper arm to shift laterally on the boom, accelerate pin wear, and reduce digging precision on applicable Hitachi and John Deere excavators.

Why Choose Broken Tractor:

• ✅ Supersession Confirmed: 4163454 supersedes TH104460 — if your parts manual or service record shows TH104460, 4163454 is the correct current part to order.
• ✅ Hitachi & John Deere Cross-Reference: Part number 4163454 is used by both Hitachi (EX150) and John Deere (590D) — the same bushing services both machine families at this boom-to-arm spacer position.
• ✅ Made in the USA: Manufactured domestically to OEM dimensional tolerances for a precise fit at this critical pivot point.
• ✅ Fast Shipping from a U.S.-Based Team: In-stock and ready to ship from our U.S. warehouses.