
FS1040 (Fleetguard) Fuel Water Separator
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Product Descreiption
Specifications
- Type: Spin-on fuel water separator
- Thread: M85 × 2-7H internal thread
- Outer Diameter: 118.11 mm (4.65 in)
- Overall Height: 293.98 mm (11.57 in)
- Filtration rating: 10 micron, 99% efficiency per SAE J1985
- Water separation efficiency: ≥95% for free water
- Cross reference: P551047, BF1277-SPS, 33423
Installation Position
It is installed on the diesel fuel supply line, upstream of the engine fuel injection pump and fuel fine filter. It serves as the primary fuel pre-filter, mounted between the fuel tank and engine.
Function
- Remove solid contaminants such as rust, sand and particles from diesel fuel.
- Separate free water out of diesel to avoid water damage to injectors and high-pressure fuel pumps.
- Protect the engine fuel system and extend the service life of downstream fuel filters and injection components.
- Equipped with a drain valve at the bottom for periodic draining of accumulated water.




