FF5052 ST20706 OEM Spin-On Diesel Fuel Filter The FF5052 fuel filter with cross reference part number ST20706 is a heavy-duty spin-on primary diesel fuel filter designed for medium & heavy-duty diesel engines widely used on commercial trucks, construction excavators, agricultural machinery and stationary generator sets. As the core protection component of the engine fuel delivery system, it effectively intercepts solid contaminants including metal rust particles, sand, carbon sludge, colloidal sediments and tiny abrasive impurities inside diesel fuel before oil flows into high-pressure fuel pumps and precision injectors. Manufactured strictly in compliance with ISO/TS16949 automotive quality standards, it perfectly matches Cummins 4BTA3.9, 6BTA5.9, QSB5.9 engines and Komatsu 6D102 excavator power systems. It maintains stable 17μm precision filtration performance under long-time high-load operation, dusty mining sites, low-temperature cold weather and high-humidity working environments. This filter acts as a perfect aftermarket direct OEM replacement part, fully protecting expensive fuel system precision components, reducing breakdown risks, and securing stable power output for engineering equipment and highway heavy trucks.
Product Material Description:
High-Strength Carbon Steel Outer Housing: Thickened cold-rolled carbon steel shell with full electrophoretic anti-rust & anti-corrosion coating. It boasts outstanding pressure resistance and impact resistance, capable of enduring long-term fuel system working pressure without deformation, cracking or fuel leakage, offering comprehensive outer protection for internal filter media.
Gradient Composite Filter Media: Multi-layer high-density wood pulp composite filter paper with hydrophobic resin treatment, adopting deep dense pleated folding technology to maximize the effective filtration area. The progressive gradient density structure realizes staged precise particle trapping, achieving 96% filtration efficiency for 17μm fine particles while keeping smooth fuel flow steadily.
Industrial NBR Sealing Assembly: High-temperature resistant nitrile rubber sealing gasket, resistant to long-term diesel erosion, aging and temperature fluctuation. It keeps stable sealing elasticity within -35℃ ~ 125℃ working range, thoroughly preventing unfiltered fuel bypass and installation joint oil leakage.
Precision CNC Thread Base: Machined solid carbon steel base with standard M16×1.5 internal thread, precise dimensional tolerance and firm structure, supporting easy spin-on installation and quick disassembly during routine maintenance.
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