Excavator Filters

FS20121 5528103 Fuel Water Separator for Cummins B6.7 L9 Engines

Q: What numbers are documented for FS20121?

Primary Filter Number: FS20121. Manufacturer Cross-Reference: 5528103. Manufacturer Cross-Reference: 5444245. Relationship labels distinguish formatting aliases, direct interchanges, remanufactured references and related assemblies.

Q: How do I confirm FS20121 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.

FS20121 5528103 Fuel Water Separator for Cummins B6.7 L9 Engines, OEM/reference FS20121, Fuel Water Separator, product view 1

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4 product photos · Swipe on mobile, or hover and select a thumbnail.

OEM / referenceFS20121

SpecificationFuel Water Separator

Catalog ID51648729

Product Type: Fuel water separator

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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 Filter Number	Fuel/water separator	FS20121
Manufacturer Cross-Reference	Cummins service number	5528103
Manufacturer Cross-Reference	Cummins service number	5444245

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

FS20121

Manufacturer number

5528103
5444245

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 Water Separator

Category: Excavator Filters
Catalog ID: 51648729
Photo views: 4

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

2 model references

Cummins engine family: B6.7 / L9
Application range: 2021-on medium-duty applications in cited catalog

Fitment / evidence notes

Fitment limitation: Confirm engine CPL, emissions year and sensor/drain configuration

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 FS20121

Which machines use FS20121?

Recorded compatible model references include Cummins engine family: B6.7 / L9, Application range: 2021-on medium-duty applications in cited catalog. Recorded fitment/evidence notes: Fitment limitation: Confirm engine CPL, emissions year and sensor/drain configuration. Confirm the complete part number and machine serial range before ordering.

What numbers are documented for FS20121?

Manufacturer number: 5528103, 5444245.

How do I confirm FS20121 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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