Part number lookup

4001-UP Replacement Parts

Cross-reference and compare 8 replacement listings for OEM / aftermarket part number 4001-UP. Use this part-number page — not a generic equipment or brand hub — to review price, availability, and fitment before ordering.

8 Matching Products

Boom Cylinder Seal Kit 707-98-36700 For Komatsu Excavator PC78US-6 PC78MR-6 PC88MR-6 PW98MR-6KomatsuBoom Cylinder Seal Kit 707-98-36700 For Komatsu Excavator PC78US-6 PC78MR-6 PC88MR-6 PW98MR-6$155.57Bucket Cylinder Seal Kit 707-98-26720 For Komatsu Excavator PC78MR-6 PC78US-6 PC88MR-6KomatsuBucket Cylinder Seal Kit 707-98-26720 For Komatsu Excavator PC78MR-6 PC78US-6 PC88MR-6$147.07Hydraulic Main Pump Long Tail Pump 708-3T-00140 for Komatsu Excavator PC78US-6 With Bulldozer Without Vane PumpKomatsuHydraulic Main Pump Long Tail Pump 708-3T-00140 for Komatsu Excavator PC78US-6 With Bulldozer Without Vane Pump$9,137.80Hydraulic Main Pump Short Tail Pump 708-3T-00140 for Komatsu Excavator PC78US-6 Without Bulldozer and Vane PumpKomatsuHydraulic Main Pump Short Tail Pump 708-3T-00140 for Komatsu Excavator PC78US-6 Without Bulldozer and Vane Pump$8,108.51Hydraulic Pump 704-56-11101 For Komatsu Grader GS360-1 GD600R-1 GD31RC-3A GD605A-1KomatsuHydraulic Pump 704-56-11101 For Komatsu Grader GS360-1 GD600R-1 GD31RC-3A GD605A-1$2,172.17Hydraulic Pump Assembly 23B-60-11102 for Komatsu GD611 GD611A-1 GraderKomatsuHydraulic Pump Assembly 23B-60-11102 for Komatsu GD611 GD611A-1 Grader$1,237.03Pilot Pump Gear Pump 708-3T-04610 for Komatsu Excavator PC78UU-6 PC78US-6KomatsuPilot Pump Gear Pump 708-3T-04610 for Komatsu Excavator PC78UU-6 PC78US-6$1,132.85Water Separator 21W-04-41161 For Komatsu Excavator PC78MR-6 PC78US-6 PC78UU-6 PC88MR-6 PW98MR-6KomatsuWater Separator 21W-04-41161 For Komatsu Excavator PC78MR-6 PC78US-6 PC78UU-6 PC88MR-6 PW98MR-6$200.44

Part Numbers and Cross References

707-98-36700PC78MR-61001-UP4001-UPPC78US-64001-UP15001-UPPC78US-815001-UPUPPC88MR-85001-UPPC88MR-85001-UP707-98-26720PC78US-6PC78US-8PC78UU-622001-UPPC78UU-8PC88MR-6708-3T-001407083T00140708-3T-001207083T00120708-3T-001167083T00116708-3T-001157083T00115708-3T-001147083T0011490kgs7083T00120708-3T-001180kgs704-56-11101GS360-1GD600R-1GD31RC-3AGD605A-110003-UP50002-UP10002-UP23B-60-11102GD611GD611A-1GD505A-3A2001-UPGD521A-1E12001-UPGD521A-110001-UPGD605A-5SGD605A-5708-3T-04610PC78US-6PC78UU-6EXCAVATORSPC78US-6WY708-3T-0461021W-04-41161PW98MR-6

Applications and Fitment Summary

  • Part Number
  • Komatsu Excavator PC78US-6 PC78MR-6 PC88MR-6 PW98MR-6 Boom Cylinder Seal Kit 707-98-36700 Model NO:Komatsu Excavator PC78US-6
  • Boom Cylinder:707-00-0A631,707-00-0A630 Bore:115mm Rod:65mm Code:P-U-14 Details: PC78MR-6 S/N 1001-UP (For EU)PC78MR-6 S/N 1001-UP (For North America)PC78US-6 S/N 4001-UPPC78US-6 S/N 4001-UP (For North America)PC78US-6 S/N 4001-UP (For Norway)PC78US-8 S/N 15001-UPPC78US-8 S/N 15001-UP (EU Spec.)PC78US-8 S/N 15001-UP (North America Spec.)PC88MR-6 S/N F00003 AND UPPC88MR-8 S/N 5001-UPPC88MR-8 S/N 5001-UP (EU Spec.)PC88MR-8 S/N 5001-UP (North America Spec.)PC88MR-8 S/N A90001-UPPC88MR-8 S/N F80003 AND UPPC88MR-8(JPN) - FOR EU 2-PIECE BOOM Application S/N 5001-UpPW98MR-6 S/N F00003-UpPW98MR-8 S/N F80003 AND UP Note: Please contact us to confirm the hydraulic seal kit you need before buying, thank you!
  • Komatsu Excavator PC78MR-6 PC78US-6 PC88MR-6 Bucket Cylinder Seal Kit 707-98-26720 Model NO:Komatsu Excavator PC78MR-6 PC78US-6 PC88MR-6
  • Bucket Details: PC78MR-6 S/N 1001-UP (For EU) PC78MR-6 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-8 S/N 15001-UP PC78US-8 S/N 15001-UP (EU Spec.) PC78US-8 S/N 15001-UP (North America Spec.) PC78UU-6 S/N 22001-UP PC78UU-8 S/N 15001-UP PC88MR-6 S/N F00003 AND UP PC88MR-8 S/N 5001-UP PC88MR-8 S/N 5001-UP (EU Spec.) PC88MR-8 S/N 5001-UP (North America Spec.) PC88MR-8 S/N F80003 AND UP PC88MR-8(JPN) - FOR EU 2-PIECE BOOM APPLICATION S/N 5001-Up PW98MR-6 S/N F00003-Up PW98MR-8 S/N F80003 AND UP Note: Please contact us to confirm the hydraulic seal kit you need before buying, thank you!
  • Komatsu Grader GS360-1 GD600R-1 GD31RC-3A GD605A-1 Hydraulic Pump 704-56-11101
  • Komatsu · s: Excavator: PC78UU-6, PC78US-6 PC78UU-6 S/N 22001-UP EXCAVATORS PC78US-6 S/N 4001-UP EXCAVATORS
  • Komatsu Excavator PC78MR-6 PC78US-6 PC78UU-6 PC88MR-6 PW98MR-6 Water Separator 21W-04-41161
  • Komatsu Excavator Models: PC78MR-6,PC78US-6,PC78UU-6,PC88MR-6,PW98MR-6 Details: PC78MR-6 S/N 1001-UP (For EU) PC78MR-6 S/N 1001-UP (For EU) EXCAVATORS PC78MR-6 S/N 1001-UP (For North America) PC78MR-6 S/N 1001-UP (For North America) EXCAVATORS PC78US-6 S/N 4001-UP PC78US-6 S/N 4001-UP (For North America) PC78US-6 S/N 4001-UP (For North America) EXCAVATORS PC78US-6 S/N 4001-UP (For Norway) PC78US-6 S/N 4001-UP (For Norway) EXCAVATORS PC78US-6 S/N 4001-UP (Overseas Version) PC78US-6 S/N 4001-UP (Overseas Version) EXCAVATORS PC78US-6 S/N 4001-UP EXCAVATORS PC78UU-6 S/N 22001-UP PC78UU-6 S/N 22001-UP EXCAVATORS PC88MR-6 S/N F00003 AND UP PC88MR-6 S/N F00003 AND UP EXCAVATORS PW98MR-6 S/N F00003-Up PW98MR-6 S/N F00003-Up EXCAVATORS

Frequently Asked Questions

What parts replace OEM number 4001-UP?

This page lists 8 replacement listings indexed under 4001-UP. Compare cross references, applications, and pricing before ordering.

How do I confirm fitment for 4001-UP?

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 4001-UP 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

Send machine details before ordering high-risk parts.