Fuel Water Separator Filter 326-1644 for Caterpillar CAT C6.6 C7 C9 Engine 320C

Product Overview

This fuel water separator filter removes contaminants and water from diesel fuel feeding Caterpillar C6.6, C7, and C9 engines. Designed for the 320C excavator and other CAT machinery, the 326-1644 filter protects injectors and fuel system components. A direct replacement for OEM part 326-1644, it ensures clean fuel delivery for reliable performance.

Key Features & Performance

• High-efficiency water separation to prevent fuel system damage
• Fine filtration media captures dirt and debris down to micron level
• Direct fit for CAT C6.6, C7, C9 engines and 320C models
• Easy spin-on or cartridge replacement design
• Meets OEM specifications for flow rate and capacity

Fitment & Compatibility

• Caterpillar CAT C6.6 engine
• Caterpillar CAT C7 engine
• Caterpillar CAT C9 engine
• Caterpillar 320C excavator
• Replaces OEM part number 326-1644

Common Uses

• Routine fuel system maintenance on CAT heavy equipment
• Replacing clogged or worn separator filters in diesel engines
• Protecting injectors in construction and mining machinery

Technical Specifications

• Part Number(s): 326-1644
• Product Type: Fuel Water Separator Filter

Frequently Asked Questions

Q: Can this filter be used on a CAT C7 engine in a highway truck? A: Yes, it is designed for C7 engines in various applications, but always verify your specific filter housing and serial number.

Q: Does this filter include a water drain valve? A: The filter element itself does not include a drain; use your existing housing drain to purge collected water.

Product appearance and specifications may vary slightly by batch. Compatibility may vary by serial number. Verify fitment before purchase.