Excavator Filters

326-1644 Fuel Water Separator for Cat C7 C9 320D 330D 336D Excavators

Q: What numbers are documented for 326-1644?

Primary Cat Part Number: 326-1644. Same-number Formatting Variant: 3261644. Relationship labels distinguish formatting aliases, direct interchanges, remanufactured references and related assemblies.

Q: How do I confirm 326-1644 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.

326-1644 Fuel Water Separator for Cat C7 C9 320D 330D 336D Excavators, OEM/reference 326-1644, Advanced-Efficiency Fuel Water Separator, product view 1

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

OEM / reference326-1644

SpecificationAdvanced-Efficiency Fuel Water Separator

Catalog ID53468167

Product Type: Advanced-efficiency fuel water separator
Filter Function: Separates free and emulsified water and fuel-system contaminants
Filter Media: Cat-described pleated media with nylon center tube and molded end caps

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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 Cat Part Number	Official Cat product identity	326-1644
Same-number Formatting Variant	Search alias only	3261644

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

326-1644

Formatting alias

3261644

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

Advanced-Efficiency Fuel Water Separator

Category: Excavator Filters
Catalog ID: 53468167
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

Official Cat engine families: C7 / C9
Official Cat excavator examples: 320D / 320D L / 320D GC / 330D / 330D L / 336D / 336D L
Additional official equipment examples: IT62H / 815B / M325D MH / 12M / 140M / 160M
Fitment limitation: Confirm 326-1644, filter head, seal interface and machine serial range

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 326-1644

Which machines use 326-1644?

Recorded compatible model references include Official Cat engine families: C7 / C9, Official Cat excavator examples: 320D / 320D L / 320D GC / 330D / 330D L / 336D / 336D L, Additional official equipment examples: IT62H / 815B / M325D MH / 12M / 140M / 160M, Fitment limitation: Confirm 326-1644, filter head, seal interface and machine serial range. Confirm the complete part number and machine serial range before ordering.

What numbers are documented for 326-1644?

Formatting aliases for the same number: 3261644.

How do I confirm 326-1644 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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