How do I confirm pilotpart170512 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

Return Piping Check Valve 4277666 for Hitachi Excavator EX400-3 ZX450

For Hitachi Engine Assembly

Engine Assembly 4277666 for Hitachi

Q: What part numbers are associated with this Engine Assembly?

4277666, EX400-3, EX400-3C, EX400-5, EX450H-5, FV30, ZX450, ZX450H, ZX450H-HHE, ZX460LCH-AMS, ZX460LCH-HCME, ZX480MT

OEM / REF: 4277666SKU: pilotpart170512

Return Piping Check Valve 4277666 for Hitachi Excavator EX400-3 ZX450 is a Engine Assembly replacement part indexed for Part Number and Hitachi Excavator: EX400-3,EX400-3C,EX400-5,EX450H-5,FV30,ZX450,ZX450H,ZX450H-HHE,ZX460LCH-AMS,ZX460LCH-HCME,ZX480MT,ZX480MTH,ZX500LC,ZX500LCH For John Deere Excavator: 450CLC,450LC...

Stock: In stock
Condition: New
Fitment: Hitachi Machinery & Equipment
Category: Engine Assembly

Fitment support before you order
Worldwide delivery options

In stock — ready to order

$118.57USD/EA

~~$31,599.00~~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

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.

Engine Assembly Description

This Engine Assembly is indexed for Part Number; Hitachi Excavator: EX400-3,EX400-3C,EX400-5,EX450H-5,FV30,ZX450,ZX450H,ZX450H-HHE,ZX460LCH-AMS,ZX460LCH-HCME,ZX480MT,ZX480MTH,ZX500LC,ZX500LCH For John Deere Excavator: 450CLC,450LC,992ELC; Hitachi Hitachi Excavator: EX400-3,EX400-3C,EX400-5,EX450H-5,FV30,ZX450,ZX450H,ZX450H-HHE,ZX460LCH-AMS,ZX460LCH-HCME,ZX480MT,ZX480MTH,ZX500LC,ZX500LCH For John Deere Excavator:450CLC,450LC,992ELC. Compare reference number 4277666 against the label on your existing Hitachi component before ordering.

Additional cross references on file: EX400-3, EX400-3C, EX400-5. If your machine plate shows a different number, submit a fitment inquiry with photos before checkout.

Part Numbers and Cross References

4277666 EX400-3 EX400-3C EX400-5 EX450H-5FV30ZX450 ZX450H ZX450H-HHE ZX460LCH-AMS ZX460LCH-HCME ZX480MT

Applications

Part Number
Hitachi Excavator: EX400-3,EX400-3C,EX400-5,EX450H-5,FV30,ZX450,ZX450H,ZX450H-HHE,ZX460LCH-AMS,ZX460LCH-HCME,ZX480MT,ZX480MTH,ZX500LC,ZX500LCH For John Deere Excavator: 450CLC,450LC,992ELC
Hitachi Hitachi Excavator: EX400-3,EX400-3C,EX400-5,EX450H-5,FV30,ZX450,ZX450H,ZX450H-HHE,ZX460LCH-AMS,ZX460LCH-HCME,ZX480MT,ZX480MTH,ZX500LC,ZX500LCH For John Deere Excavator:450CLC,450LC,992ELC

Specifications

Part Number	4277666

Fitment Notes

Brand or application signal: Hitachi Machinery & Equipment
Product family: Engine Assembly
System category: Machinery & Equipment > Engine & Power Systems > Engine Assembly
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.