Description
FF5369W Fuel Water Separator Filter — Heavy-Duty Diesel Protection
The FF5369W fuel water separator filter is engineered for Freightliner, Kenworth, Peterbilt, International, and Sterling heavy-duty diesel trucks. Combines 10-micron particulate filtration with advanced water separation in one spin-on element. Replaces 380087, 85105574, PF7548, 23521528, and P550414. Includes O-rings for complete installation.
Key Features
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Dual-Action Filtration: Removes both solid contaminants (10 micron) and emulsified water in a single element — simplifies maintenance and reduces filter inventory.
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Heavy-Duty Truck Compatible: Designed for Freightliner Cascadia, Kenworth T680/T880, Peterbilt 579/389, and International LT/ProStar with Detroit DD and Cummins ISX engines.
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Includes O-Rings: Complete installation kit with pre-lubricated O-rings — no hunting for gaskets or seals during filter changes.
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Hydrophobic Media: Advanced barrier layer coalesces micro-droplets into larger water particles that settle to the filter bowl for easy draining.
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IATF 16949 Certified: Same quality systems as major OEM filter suppliers.
Technical Specifications
| Specification |
Value |
| Part Number |
FF5369W / P550414 |
| Cross Reference |
380087, 85105574, PF7548, 23521528 |
| Filtration |
10 Micron Nominal |
| Water Separation |
≥95% Efficiency |
| Includes |
Filter Element + O-Ring Set |
Vehicle & Engine Compatibility
| Make |
Models |
Engines |
| Freightliner |
Cascadia, Columbia, Century, M2 |
Detroit DD13/DD15/DD16 |
| Kenworth |
T680, T880, W900 |
Cummins ISX15, PACCAR MX-13 |
| Peterbilt |
579, 389, 567 |
Cummins ISX15, PACCAR MX-13 |
| International |
LT Series, ProStar |
Cummins ISX15, A26 |
Why Choose This Product?
Water in diesel fuel is a silent engine killer — it causes injector tip erosion, promotes microbial growth (diesel bug), and freezes in cold weather. The FF5369W's dual-action filtration traps both particles and water, giving your injection system the protection it needs.
Frequently Asked Questions
Q: How often should this water separator filter be replaced?
A: Replace every 15,000-25,000 miles. Drain the water separator bowl weekly or when the WIF (Water In Fuel) light illuminates on your dash.
Q: What's the difference between FF5369 and FF5369W?
A: The FF5369W includes the water separation layer. The standard FF5369 is particulate-only. For most truck applications, the 'W' version is recommended.
Q: Does this come with the O-ring for the filter housing?
A: Yes. The FF5369W includes a complete O-ring kit. Always replace O-rings with each filter change to prevent vacuum leaks.
Q: Will this fit my Freightliner Cascadia with DD15?
A: Yes. This is the correct filter for Cascadia models with Detroit DD13, DD15, and DD16 engines using the chassis-mounted fuel filter housing.
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