Excavator Engine Parts
1 product video · 3 product photos · Swipe on mobile, or hover and select a thumbnail.
Fuel-injection pump identified by Delphi reference 9521A031H and CAT equipment number 398-1498. The official CAT record identifies 398-1498 as a fuel-injection pump and lists the 320D2 excavator as a compatible model. Exact-number pump catalogs map 9521A031H to the same application family; 9521A030H is retained only as a related pump-family number requiring nameplate and calibration verification. Three owned views show one consistent pump body, flange, fuel ports and control hardware. Confirm both numbers, pump nameplate, calibration code, engine arrangement and machine serial before ordering.
Send the machine model, engine model or nameplate photo so our team can confirm compatibility before shipment.
| Relationship | Reference family | Number |
|---|---|---|
| Primary Pump Number | Delphi pump reference | 9521A031H |
| Equipment Manufacturer Number | Official CAT fuel-injection pump number | 398-1498 |
| Official Reman Service Alternative | CAT remanufactured pump alternative | 20R-4819 |
| Related Pump Number - Verify Calibration | Published in the same pump family | 9521A030H |
Product fitment guide
Quickly compare the reference number and recorded machine applications. Use the original photos and the checklist before ordering.
Part identification
Formatting aliases are the same number written differently. Related assemblies and remanufactured numbers are not presented as direct interchanges.
Product summary
Before ordering
Machine fitment
2 model references
Compatibility lists identify searchable model families, not every production serial range. Confirm the original part number and machine serial number before purchase.
Quick fitment answers
Recorded compatible model references include Official compatible excavator: CAT 320D2, Fitment limitation: Confirm engine arrangement, machine serial, pump nameplate and calibration code. Confirm the complete part number and machine serial range before ordering.
Manufacturer number: 398-1498. Remanufactured references: 20R-4819. Related assembly numbers (not direct interchanges): 9521A030H.
Match the complete part number on the original component. Compare connectors, mounting points and visible dimensions with the product photos. Confirm the exact machine or engine model and serial range before ordering. Send clear photos of the original unit and connector layout when requesting a quote.
Continue comparing verified references from the same system.
Excavator Engine Parts15521-03040 Complete Cylinder Head for Kubota D1402 Engine15521-03040
Excavator Engine Parts20160413000 Mechanical Water Pump with Gasket for Volvo and Renault Applications20160413000
Excavator Engine Parts094000-0430 HP0 Fuel Injection Pump for Hino P11C094000-0430
Excavator Engine Parts8-98063668-1 Water Connector for Isuzu 4LE28-98063668-1
