How do I confirm pilotpart431521 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

New Engine Water Pump N401420 Compatible With Isuzu Npr Nqr Npr-Hd 4.8L L4 Cyl 290 Cid 1998 1999 2000 2001 2002

For Isuzu Water Pump

Water Pump 42227HD for Isuzu 4.8L L4 CYL 290 CID Engine

Q: What part numbers are associated with this Water Pump?

42227HD, 42239HD, 8-97073-951-0, 9-97109-676-0, N401420

OEM / REF: 42227HDSKU: pilotpart431521

New Engine Water Pump N401420 Compatible With Isuzu Npr Nqr Npr-Hd 4.8L L4 Cyl 290 Cid 1998 1999 2000 2001 2002 is a Water Pump replacement part indexed for Isuzu NPR · 4.8L L4 CYL 290 CID · 1998-2004 and Isuzu NPR-HD · 4.8L L4 CYL 290 CID · 1998-2004, with 3 application records on file. Match OEM part number 42227H...

Stock: In stock
Condition: New
Fitment: Isuzu Engine Spare Parts
Category: Water Pump

Fitment support before you order
Worldwide delivery options

In stock — ready to order

$78.42USD/EA

~~$8,062.00~~Save 99%

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.

Water Pump Description

This Water Pump is indexed for Isuzu NPR · 4.8L L4 CYL 290 CID · 1998-2004; Isuzu NPR-HD · 4.8L L4 CYL 290 CID · 1998-2004; Isuzu NQR · 4.8L L4 CYL 290 CID · 1998-2004. Compare reference number 42227HD against the label on your existing Isuzu component before ordering.

Additional cross references on file: 42239HD, 8-97073-951-0, 9-97109-676-0. If your machine plate shows a different number, submit a fitment inquiry with photos before checkout.

Part Numbers and Cross References

42227HD 42239HD 8-97073-951-0 9-97109-676-0 N401420

Applications

Isuzu NPR · 4.8L L4 CYL 290 CID · 1998-2004
Isuzu NPR-HD · 4.8L L4 CYL 290 CID · 1998-2004
Isuzu NQR · 4.8L L4 CYL 290 CID · 1998-2004

Specifications

Gasket	Included
Part Number (GATES)	42227HD, 42239HD
Part Number (ISUZU)	8-97073-951-0, 8970739510, 9-97109-676-0, 9971096760
Part Number (NAPA)	N401420
Part Number	GATES: 42227HD, 42239HD ISUZU: 8-97073-951-0, 8970739510, 9-97109-676-0, 9971096760 NAPA: N401420

Fitment Notes

Brand or application signal: Isuzu Engine Spare Parts
Product family: Water Pump
System category: Engine Spare Parts > Lubrication & Cooling Systems > Water Pump
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.