Cummins ISL9.5 engine auto parts fuel filter FF5866 in stocked

Built as a dual-functional purification component, FF5866 integrates multi-stage filtration to eliminate fuel contaminants and water. The outer layer is a coarse synthetic fiber layer that traps large particles (20-50μm) like dust, rust, and metal shavings, preventing clogging of inner layers. The middle layer is a micro-glass fiber media with 3μm pore size, capturing 99.8% of fine impurities (e.g., carbon deposits, injector wear debris) that cause fuel injector damage. The inner layer features a hydrophobic polypropylene membrane that separates free water from diesel (water separation efficiency ≥95%), draining it via the filter’s bottom water sensor port. This system reduces injector wear by 70% and extends fuel system service life by 40% for ISL9.5 engines

Optimized for minimal flow resistance while maintaining filtration efficiency, FF5866 adopts a high-flow structural design. The filtration media is pleated into 140 folds (8mm pleat height), maximizing the effective filtration area to 1.5㎡—35% larger than standard filters. This design reduces pressure drop to ≤8kPa at the ISL9.5’s maximum fuel flow rate (120L/h), ensuring consistent fuel supply to the common-rail system even under full-load conditions (e.g., a city bus climbing a slope with full passengers). The smooth inner surface of the filter housing minimizes fluid turbulence, further enhancing flow efficiency. By maintaining stable fuel pressure, it supports the engine’s rated power output (350-450hp) and prevents performance degradation caused by fuel starvation

Engineered for long-term reliability in harsh operating environments, FF5866 uses premium materials and robust construction. The filter housing is made of high-impact polypropylene (PP) with a tensile strength of 35MPa, resisting deformation and cracking from vibration or accidental impacts. The filtration media is bonded with heat-resistant epoxy resin (operating temperature range -40℃ to 120℃), avoiding media collapse under high flow rates. The nitrile rubber sealing ring maintains elasticity and sealing performance for ≥25,000km, preventing unfiltered fuel bypass. The filter undergoes 100,000-cycle pressure pulse testing (50-600kPa), ensuring no leakage or media damage—extending service intervals to 25,000km, 30% longer than aftermarket alternatives

FF5866 directly contributes to Cummins ISL9.5 engines meeting strict emission standards (EPA 2017, Euro VI, China National VI). By removing fine contaminants and water, it protects the fuel injectors’ precision components (e.g., solenoid valves, nozzle holes), ensuring accurate fuel injection and complete combustion—reducing NOx emissions by 15% and particulate matter (PM) by 20%. The extended service life reduces filter replacement frequency, cutting maintenance labor costs by 40%. It also avoids expensive injector repairs (costing up to $2,000 per unit) caused by contaminated fuel. Backed by a 1-year/25,000km warranty, the filter provides cost-effective protection for fleet operators, minimizing downtime and ensuring compliance with environmental regulations