326-1644 OEM Advanced High Efficiency Fuel/Water Separator for Cat
Items included:
This listing is for a brand-new, genuine OEM Caterpillar 326-1644 Fuel/Water Separator.
This advanced high-efficiency filter is engineered to remove water, sediment, and fine contaminants from diesel fuel systems — protecting injectors, pumps, and critical engine components.
This is the same OEM filter sold by Caterpillar dealers, ensuring reliable performance in demanding environments.
Brand: Caterpillar (CAT)
OEM Part Number: 326-1644 (also written as 3261644)
Type: Fuel/Water Separator Filter
Efficiency: Advanced High Efficiency (AHE)
Condition: New (never installed)
Application: Diesel engines & fuel systems requiring water separation
High-efficiency filtration media captures fine particulates
Water-separating barrier prevents moisture from entering the injection system
Protects high-pressure injectors and fuel pumps
Designed for harsh off-road, industrial, and construction environments
Genuine Caterpillar quality — consistent, reliable performance
Helps improve fuel system life and reduce downtime
This filter is used on many Caterpillar machines and engines, including:
Construction equipment
Off-highway trucks
Compact and heavy machinery
Industrial diesel engines
Power generation units
Always confirm your equipment’s OEM part number (326-1644) before purchasing.
The CAT 326-1644 may cross with:
Donaldson: P551047
Fleetguard: FS1065
Wix: 33375
Baldwin: BF1286-D
Luber-Finer: LFF5485
(Cross-refs included for buyers searching by alternate part numbers.)
-Please review photos to judge condition.
-Comes as photographed with a 30 day DOA warranty.
-Please refer to the pictures as it will be the exact item you will receive and message me with any questions you may have.
-Free shipping.
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