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FUEL FILTER 400504-00325-EP
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Product Overview
This spin-on fuel filter / water separator is designed for the diesel fuel system of compact wheeled excavators. It combines particulate filtration and free-water separation in one serviceable unit, helping protect the high-pressure fuel pump and injectors from early wear and corrosion caused by particles and water. The spin-on design allows straightforward replacement and fits the corresponding filter head.
Technical Specifications

Compatibility
Machine Model Notes DX57W-5 wheeled excavator Primary application; D24 4-cylinder diesel, 42.5 kW (57 hp) FAQ
Q: Is this a genuine part?
A: Yes. This is a genuine replacement part manufactured to the corresponding specifications.Q: How often should it be replaced?
A: Every 500 operating hours or 12 months under normal conditions, whichever comes first. Reduce to 250 hours in dusty, high-humidity, or inconsistent fuel-quality conditions.Q: Will it fit DX57W-7 or DX60-9C?
A: It is primarily listed for DX57W-5. Before use on other models, verify thread size and gasket diameter.Q: What is the micron rating?
A: Comparable spin-on diesel water separators typically rate 10–25 microns at ≥95% efficiency (SAE J1985), with free-water separation ≥95%. This product is manufactured to that performance class.Q: Can it be used with biodiesel blends?
A: It is compatible with B5 and B20 blends. For higher ratios, confirm fuel-system material compatibility before use.Q: Is a thin oil film on the threads normal?
A: Yes. It is a storage anti-corrosion coating and does not need to be removed before installation.Model names are used for identification and fitment reference only.
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