How do I confirm pilotpart325758 fits my machine?

Compare the OEM or reference part number, machine model, engine model, and serial number. You can also submit a fitment inquiry before ordering.

In Stock

Arm Cylinder Seal Kit 21W-63-66141 for Komatsu PC75UU-1 Excavator

For Komatsu Seal Kits

Seal Kits 21W-63-66141 for Komatsu

Q: What part numbers are associated with this Seal Kits?

21W-63-66141, PC75UU-1, 1001-UP

OEM / REF: 21W-63-66141SKU: pilotpart325758

Komatsu Seal Kits 21W-63-66141 is listed under Seals, Filters & Maintenance Parts > Seal Kits with catalog data including Part Number: 21W-63-66141,21W6366141. Verify fitment for Komatsu Seals, Filters & Maintenance Parts using the OEM number, mounting points, and photos of your existing part.

Stock: In stock
Condition: New
Fitment: Komatsu Seals, Filters & Maintenance Parts
Category: Seal Kits

Fitment support before you order
Worldwide delivery options

In stock — ready to order

$105.31USD/EA

~~$29,899.00~~Save 100%

Estimated delivery by quantity

Estimated delivery windows
Qty	Estimated delivery
1	Oct 22 – Oct 29
10	Oct 20 – Oct 27
50	Oct 18 – Oct 25

Estimates from today; confirm exact lead time before payment.

Quantity

Confirm fitment before ordering →

Lead times can vary by freight route and customs. Contact support for expedited shipping.

Seal Kits Description

This Seal Kits is indexed for Part Number. Compare reference number 21W-63-66141 against the label on your existing Komatsu component before ordering.

Additional cross references on file: PC75UU-1, 1001-UP. If your machine plate shows a different number, submit a fitment inquiry with photos before checkout.

Part Numbers and Cross References

21W-63-66141 PC75UU-1 1001-UP

Applications

Part Number

Specifications

Part Number	21W-63-66141,21W6366141

Fitment Notes

Brand or application signal: Komatsu Seals, Filters & Maintenance Parts
Product family: Seal Kits
System category: Seals, Filters & Maintenance Parts > Seal Kits > Seal Kits
Recommended verification: OEM number, engine model, serial number, old part photos, and dimensions.

Shipping & Returns

Availability: InStock
Shipping: Shipping quotes can be confirmed before payment for heavy or urgent orders.
Returns: Returns are easier when fitment is confirmed before ordering.
B2B support: Bulk, fleet, and repair-shop requests can be handled through the inquiry form.

Frequently Asked Questions

How do I confirm this part fits my machine?

Match the OEM or reference number first, then verify machine model, engine model, serial number, connector layout, mounting points, and old part photos.

Can I order if my part number is not listed?

Yes. Send the old part number, machine plate, and photos through the fitment inquiry form. Support can review possible replacements or alternatives.

Is this an OEM part?

Products are indexed as replacement parts unless explicitly marked otherwise. Always compare reference numbers and confirm fitment before purchase.