How do I confirm pilotpart310253 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

Boom Cylinder 4257642 4257643 for Hitachi EX120-2 EX120-2M EX120-3 EX120-3C EX120-3M EX120K-2 EX120K-2M EX120K-3 EX120K-3M

For Hitachi Hydraulic Cylinder

Hydraulic Cylinder 4257642 for Hitachi

Q: What part numbers are associated with this Hydraulic Cylinder?

4257642, 4257643, EX120-2, EX120-2M, EX120-3, EX120-3C, EX120-3M, EX120K-2, EX120K-2M, EX120K-3, EX120K-3M

OEM / REF: 4257642SKU: pilotpart310253

Boom Cylinder 4257642 4257643 for Hitachi EX120-2 EX120-2M EX120-3 EX120-3C EX120-3M EX120K-2 EX120K-2M EX120K-3 EX120K-3M is a Hydraulic Cylinder replacement part indexed for Part Number and Hitachi Excavator: EX120-2, EX120-2M, EX120-3, EX120-3C, EX120-3M, EX120K-2, EX120K-2M, EX120K-3, EX120K-3M, with 3 applicati...

Stock: In stock
Condition: New
Fitment: Hitachi Hydraulic & Pneumatic Parts
Category: Hydraulic Cylinder

Fitment support before you order
Worldwide delivery options

In stock — ready to order

$3,096.43USD/EA

~~$29,899.00~~Save 90%

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

Buy online now or add to your quote list for bulk pricing and fitment confirmation.

Confirm fitment before ordering →

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

Hydraulic Cylinder Description

This Hydraulic Cylinder is indexed for Part Number; Hitachi Excavator: EX120-2, EX120-2M, EX120-3, EX120-3C, EX120-3M, EX120K-2, EX120K-2M, EX120K-3, EX120K-3M; Hitachi s: Hitachi Excavator: EX120-2, EX120-2M, EX120-3, EX120-3C, EX120-3M, EX120K-2, EX120K-2M, EX120K-3, EX120K-3M; Hitachi s: Fit For Hitachi Excavator EX120-2, EX120-2M, EX120-3, EX120-3C, EX120-3M, EX120K-2, EX120K-2M, EX120K-3, EX120K-3M. Compare reference number 4257642 against the label on your existing Hitachi component before ordering.

Additional cross references on file: 4257643, EX120-2, EX120-2M. If your machine plate shows a different number, submit a fitment inquiry with photos before checkout.

Part Numbers and Cross References

4257642 4257643 EX120-2 EX120-2M EX120-3 EX120-3C EX120-3M EX120K-2 EX120K-2M EX120K-3 EX120K-3M

Applications

Part Number
Hitachi Excavator: EX120-2, EX120-2M, EX120-3, EX120-3C, EX120-3M, EX120K-2, EX120K-2M, EX120K-3, EX120K-3M
Hitachi s: Hitachi Excavator: EX120-2, EX120-2M, EX120-3, EX120-3C, EX120-3M, EX120K-2, EX120K-2M, EX120K-3, EX120K-3M
Hitachi s: Fit For Hitachi Excavator EX120-2, EX120-2M, EX120-3, EX120-3C, EX120-3M, EX120K-2, EX120K-2M, EX120K-3, EX120K-3M

Specifications

Part Number	4257642, 4257643

Fitment Notes

Brand or application signal: Hitachi Hydraulic & Pneumatic Parts
Product family: Hydraulic Cylinder
System category: Hydraulic & Pneumatic Parts > Hydraulic Cylinders & Components > Hydraulic Cylinder
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.