How do I confirm pilotpart565203 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

Main Relief Valve 4707029 for Yanmar Engine 4TNV88C Hitachi ZX40U-3 ZX48U-3 ZX50U-3 ZX52U-3 John Deere 50P 50G Excavator

For Komatsu Main & Relief Valve

Main & Relief Valve ZX40U-3U for Komatsu

OEM / REF: ZX40U-3USKU: pilotpart565203

Main Relief Valve 4707029 for Yanmar Engine 4TNV88C Hitachi ZX40U-3 ZX48U-3 ZX50U-3 ZX52U-3 John Deere 50P 50G Excavator is a Main & Relief Valve replacement part for Komatsu Hydraulic & Pneumatic Parts, categorized under Hydraulic & Pneumatic Parts > Main & Relief Valve. Use OEM part number ZX40U-3U and confirm mac...

Stock: In stock
Condition: New
Fitment: Komatsu Hydraulic & Pneumatic Parts
Category: Main & Relief Valve

Fitment support before you order
Worldwide delivery options

In stock — ready to order

$65.00USD/EA

Estimated delivery by quantity

Estimated delivery windows
Qty	Estimated delivery
1	Aug 19 – Aug 26
10	Aug 17 – Aug 24
50	Aug 15 – Aug 22

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.

Main & Relief Valve Description

This Main & Relief Valve is indexed for Komatsu s: Fit For Hitachi Excavator: ZX40U-3, ZX40U-3U, ZX40U-5A, ZX48U-3, ZX48U-3F, ZX50U-3, ZX50U-3F, ZX50U-3U, ZX50U-5A, ZX50U-5N, ZX50UNA-3, ZX52U-3, ZX52U-3F Fit For John Deere Excavator: 50P, 50G. Compare reference number ZX40U-3U against the label on your existing Komatsu component before ordering.

Additional cross references on file: ZX40U-5A, ZX48U-3, ZX48U-3F. If your machine plate shows a different number, submit a fitment inquiry with photos before checkout.

Part Numbers and Cross References

ZX40U-3U ZX40U-5A ZX48U-3 ZX48U-3F ZX50U-3 ZX50U-3F ZX50U-3U ZX50U-5A ZX50U-5N ZX50UNA-3 ZX52U-3

Applications

Komatsu s: Fit For Hitachi Excavator: ZX40U-3, ZX40U-3U, ZX40U-5A, ZX48U-3, ZX48U-3F, ZX50U-3, ZX50U-3F, ZX50U-3U, ZX50U-5A, ZX50U-5N, ZX50UNA-3, ZX52U-3, ZX52U-3F Fit For John Deere Excavator: 50P, 50G

Fitment Notes

Brand or application signal: Komatsu Hydraulic & Pneumatic Parts
Product family: Main & Relief Valve
System category: Hydraulic & Pneumatic Parts > Hydraulic & Pneumatic Valves > Main & Relief 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.