Excavator Filters

326-1643 Fuel Water Separator for CAT D6R XL III Dozer

Q: What numbers are documented for 326-1643?

Primary Part Number: 326-1643. Catalog Cross-Reference - Verify Configuration: CA1R1809. Catalog Cross-Reference - Verify Configuration: 1R-1809. Catalog Cross-Reference - Verify Configuration: CA3383540. Catalog Cross-Reference - Verify Configuration: 338-3540. Catalog Cross-Reference - Verify Configuration: CA3283655. Catalog Cross-Reference - Verify Configuration: 328-3655. Catalog Cross-Reference - Verify Configuration: CA3261644. Catalog Cross-Reference - Verify Configuration: 326-1644. Catalog Cross-Reference - Verify Configuration: CA3261643. Same-number Formatting Variant: 3261643. Catalog Cross-Reference - Verify Configuration: CA1R1808. Relationship labels distinguish formatting aliases, direct interchanges, remanufactured references and related assemblies.

Q: How do I confirm 326-1643 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.

326-1643 Fuel Water Separator for CAT D6R XL III Dozer, OEM/reference 326-1643, Fuel Water Separator Filter, product view 1

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OEM / reference326-1643

SpecificationFuel Water Separator Filter

Catalog ID53450656

Product Type: Fuel Water Separator Filter
Product Brand: EexcavaStart
Model Number: 326-1643
Engine Model: CAT
Condition: New replacement part

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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 Part Number	Source catalog	326-1643
Cross-reference (fitment check required)	Source catalog	CA1R1809
Cross-reference (fitment check required)	Source catalog	1R-1809
Cross-reference (fitment check required)	Source catalog	CA3383540
Cross-reference (fitment check required)	Source catalog	338-3540
Cross-reference (fitment check required)	Source catalog	CA3283655
Cross-reference (fitment check required)	Source catalog	328-3655
Cross-reference (fitment check required)	Source catalog	CA3261644
Cross-reference (fitment check required)	Source catalog	326-1644
Cross-reference (fitment check required)	Source catalog	CA3261643
Same-number Formatting Variant	Source catalog	3261643
Cross-reference (fitment check required)	Source catalog	CA1R1808
Cross-reference (fitment check required)	Source catalog	1R-1808
Cross-reference (fitment check required)	Source catalog	CA6i2501
Cross-reference (fitment check required)	Source catalog	6i-2501
Cross-reference (fitment check required)	Source catalog	CA6I2502
Cross-reference (fitment check required)	Source catalog	6I-2502

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

326-1643

Formatting alias

3261643

Cross-reference (fitment check required)

CA1R1809
1R-1809
CA3383540
338-3540
CA3283655
328-3655
CA3261644
326-1644
CA3261643
CA1R1808
1R-1808
CA6i2501
6i-2501
CA6I2502
6I-2502

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 Filter

Category: Excavator Filters
Catalog ID: 53450656
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

4 model references

Recorded application: CAT
Recorded application: Caterpillar CAT Dozer: D6R XL III
Recorded application: Caterpillar CAT Dozer: 1X Oil Filter
Recorded application: Caterpillar CAT Dozer

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 326-1643

Which machines use 326-1643?

Recorded compatible model references include Recorded application: CAT, Recorded application: Caterpillar CAT Dozer: D6R XL III, Recorded application: Caterpillar CAT Dozer: 1X Oil Filter, Recorded application: Caterpillar CAT Dozer. Confirm the complete part number and machine serial range before ordering.

What numbers are documented for 326-1643?

Cross-references are listed in the relationship table above. Compare specifications and the original unit before treating a reference as interchangeable. Formatting aliases for the same number: 3261643.

How do I confirm 326-1643 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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