How do I confirm pilotpart354771-9005898334456 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

HPV145 Hydraulic Pump Regulator 9122781 9136851 for Hitachi Excavator EX300-3 EX300-3C

For Hitachi Regulator Valve

Regulator Valve 9122781 for Hitachi

OEM / REF: 9122781SKU: pilotpart354771-9005898334456

HPV145 Hydraulic Pump Regulator 9122781 9136851 for Hitachi Excavator EX300-3 EX300-3C is a Regulator Valve replacement part for Hitachi Hydraulic & Pneumatic Parts, categorized under Hydraulic & Pneumatic Parts > Regulator Valve. Use OEM part number 9122781 and confirm machine model, engine model, and serial detail...

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

Fitment support before you order
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Price on requestRFQ

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

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This part requires a quote. Add it to your quote list or send machine details for pricing and lead time.

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

Regulator Valve Description

This Regulator Valve is indexed for Hitachi Fit for Hitachi Excavator: EX300-3, EX300-3C, EX310H-3C, EX300LC-3. Compare reference number 9122781 against the label on your existing Hitachi component before ordering.

Additional cross references on file: 9136851. If your machine plate shows a different number, submit a fitment inquiry with photos before checkout.

Part Numbers and Cross References

9122781 9136851

Applications

Hitachi Fit for Hitachi Excavator: EX300-3, EX300-3C, EX310H-3C, EX300LC-3

Fitment Notes

Brand or application signal: Hitachi Hydraulic & Pneumatic Parts
Product family: Regulator Valve
System category: Hydraulic & Pneumatic Parts > Hydraulic & Pneumatic Valves > Regulator Valve
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.