Part number lookup

PC78US-5 Replacement Parts

Cross-reference and compare 7 replacement listings for OEM / aftermarket part number PC78US-5. Use this part-number page — not a generic equipment or brand hub — to review price, availability, and fitment before ordering.

7 Matching Products

Boom Cylinder Seal Kit 707-98-43200 For Komatsu Excavator PC75UU-2 PC78US-5KomatsuBoom Cylinder Seal Kit 707-98-43200 For Komatsu Excavator PC75UU-2 PC78US-5$113.91Coupling 201-01-71120 2010171120 for Komatsu 4D95L-1GG 4D95LE-1B Engine PC60-7 PC70-7 PC78US-5 ExcavatorKomatsuCoupling 201-01-71120 2010171120 for Komatsu 4D95L-1GG 4D95LE-1B Engine PC60-7 PC70-7 PC78US-5 Excavator$221.83Decel Controller Assy 21W-06-21712 for Komatsu PC78US-5 PC75UU-3 PC75US-3 PC75UD-3 PC60-7 PC128US-2KomatsuDecel Controller Assy 21W-06-21712 for Komatsu PC78US-5 PC75UU-3 PC75US-3 PC75UD-3 PC60-7 PC128US-2$394.01Main Pump 705-24-29090 For Komatsu Excavator PC78US-5 PC75UD-3 PC75UU-3KomatsuMain Pump 705-24-29090 For Komatsu Excavator PC78US-5 PC75UD-3 PC75UU-3$682.46Monitor LCD Display Panel 7834-75-2102 For Komatsu Excavator PC78US-5KomatsuMonitor LCD Display Panel 7834-75-2102 For Komatsu Excavator PC78US-5$971.92Swing Gearbox 21W-26-00052 for Komatsu Excavator PC75UU-3 PC78US-5KomatsuSwing Gearbox 21W-26-00052 for Komatsu Excavator PC75UU-3 PC78US-5$2,345.00Unloading Relief Valve 723-20-70500 for Komatsu Excavator PC60-7 PC70-7 PC78US-5KomatsuUnloading Relief Valve 723-20-70500 for Komatsu Excavator PC60-7 PC70-7 PC78US-5$124.00

Part Numbers and Cross References

707-98-43210PC75UU-2PC78US-5PC75UD-2EPC75UU-2EBM020C-11001-UPBM020C-11001-UPPC75UU-25001-UPPC75UU-25001-UPPC75UD-25001-UPPC75UD-2E5001-UPPC78US-5201-01-71120178mmPC60-7PC60-7-BPC70-7PC70-7-BPC75UU-3PC78US-6PC78UU-64D95L-1GG4D95L-1GG-B21W-06-21712PC75US-3PC75UD-3PC158USLC-2PC158US-2PC128UU-2PC128UU-1705-24-2909015001-UP1001-UP7834-75-21027834752102PC78US-521W-26-00052WY21W-26-00052723-30-70100723-20-70500WY723-20-70500

Applications and Fitment Summary

  • Part Number
  • Komatsu Excavator PC75UU-2 PC78US-5 Boom Cylinder Seal Kit 707-98-43200
  • Komatsu · s: Komatsu Excavator: PC60-7, PC60-7-B, PC70-7, PC70-7-B, PC75UU-3, PC78US-5, PC78US-6, PC78UU-6 Komatsu Engine: 4D95L-1GG, 4D95L-1GG-B, 4D95L-1GG-BR, 4D95L-1GG-BW, 4D95L-1GG-S, 4D95L-1GG-SB, 4D95L-1GG-W, 4D95LE-1B, 4D95LE-1B-B Other: BA100-1, BR100JG-2 See Details: 4D95L-1GG S/N 131803-UP 4D95L-1GG-B S/N 131803-UP 4D95L-1GG-BR S/N 131803-UP 4D95L-1GG-BW S/N 131803-UP 4D95L-1GG-S S/N 131803-UP 4D95L-1GG-SB S/N 131803-UP 4D95L-1GG-W S/N 131803-UP 4D95LE-1B S/N 198831-UP 4D95LE-1B-B S/N 198831-UP BA100-1 S/N 1003-UP BR100JG-2 S/N 1301-UP BR100JG-2 S/N 1301-UP (Overseas Version) PC60-7 S/N 45001-UP PC60-7 S/N 45001-UP (For China) PC60-7 S/N 45001-UP (With Front Blade Spec.) PC60-7-B S/N 45001-UP PC70-7 S/N 45001-UP PC70-7-B S/N 45001-UP PC75UU-3 S/N 15001-UP PC78US-5 S/N 1001-UP PC78US-5 S/N 1001-UP (For North America) PC78US-6 S/N 4001-UP PC78US-6 S/N 4001-UP (For North America) PC78US-6 S/N 4001-UP (For Norway) PC78US-6 S/N 4001-UP (Overseas Version) PC78UU-6 S/N 22001-UP
  • Komatsu Excavator PC78US-5 PC75UD-3 PC75UU-3 Main Pump 705-24-29090
  • Komatsu Excavator PC78US-5 Monitor LCD Display Panel 7834-75-2102
  • Model: Komatsu Excavator PC78US-5 Details: PC78US-5 7834752102PC78US-5 S/N 1001-UP PC78US-5 S/N 1001-UP (For North America)

Frequently Asked Questions

What parts replace OEM number PC78US-5?

This page lists 7 replacement listings indexed under PC78US-5. Compare cross references, applications, and pricing before ordering.

How do I confirm fitment for PC78US-5?

Match the stamped part number first, then verify machine model, engine code, serial number, mounting points, and photos of your old part before checkout.

Can I request a quote if PC78US-5 is not an exact match?

Yes. Use the fitment inquiry form with your machine plate, engine model, and photos. Support can review alternatives or cross references.

Confirm fitment

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