Excavator Engine Parts

9521A031H 398-1498 Fuel Injection Pump for CAT 320D2

Q: What numbers are documented for 9521A031H?

Primary Pump Number: 9521A031H. Equipment Manufacturer Number: 398-1498. Official Reman Service Alternative: 20R-4819. Related Pump Number - Verify Calibration: 9521A030H. Relationship labels distinguish formatting aliases, direct interchanges, remanufactured references and related assemblies.

Q: How do I confirm 9521A031H before ordering?

Match the complete part number, compare the connector or mounting arrangement with the product photos, and confirm the machine or engine model and serial range. Send clear photos of the original unit when requesting a quote.

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OEM / reference9521A031H

SpecificationFuel Injection Pump Assembly

Catalog ID53087344

Product Type: Fuel-injection pump assembly
Official CAT Number: 398-1498
Published CAT Dimensions: 274.32 mm L x 261.62 mm W x 210.82 mm H
Calibration: Must match the physical pump nameplate
Condition: New/service replacement; confirm quotation

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Send the machine model, engine model or nameplate photo so our team can confirm compatibility before shipment.

Quotation details: MOQ, availability, lead time, item condition (new or remanufactured) and warranty coverage must be confirmed in your quotation before ordering.

Part-number relationships

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

Part numbers and compatible models

Quickly compare the reference number and recorded machine applications. Use the original photos and the checklist before ordering.

Part identification

Reference numbers

Primary number

9521A031H

Manufacturer number

398-1498

Remanufactured number

20R-4819

Related assembly

9521A030H

Formatting aliases are the same number written differently. Cross-references require a specification and fitment check; they do not by themselves confirm direct interchangeability. Related assemblies and remanufactured numbers are separate relationship types.

Product summary

Fuel Injection Pump Assembly

Category: Excavator Engine Parts
Catalog ID: 53087344
Photo views: 3

Before ordering

Confirm these details

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.

Machine fitment

Compatible model references

1 model reference

Official compatible excavator: CAT 320D2

Fitment / evidence notes

Fitment limitation: Confirm engine arrangement, machine serial, pump nameplate and calibration code

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

Common questions about 9521A031H

Which machines use 9521A031H?

Recorded compatible model references include Official compatible excavator: CAT 320D2. Recorded fitment/evidence notes: Fitment limitation: Confirm engine arrangement, machine serial, pump nameplate and calibration code. Confirm the complete part number and machine serial range before ordering.

What numbers are documented for 9521A031H?

Manufacturer number: 398-1498. Remanufactured references: 20R-4819. Related assembly numbers (not direct interchanges): 9521A030H.

How do I confirm 9521A031H before ordering?

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.

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