C4989106 Diesel Fuel Filter is a high-efficiency fuel-water separation filter cartridge designed for ISD6.7 diesel engine fuel supply system. It traps rust, sediment and fine solid contaminants in diesel fuel, while isolating free water mixed in fuel to protect precision fuel injectors and transfer pump. This aftermarket replacement filter resolves insufficient fuel delivery, power drop under heavy load and injector carbon clogging caused by filter media blockage, material damage and water accumulation. Stable fuel purification maintains normal injection pressure and combustion efficiency, reducing breakdown risk for medium-heavy trucks used in municipal transport and continuous intercity freight assignments.

Product Advantages Constructed from multi-layer hydrophobic composite filter paper with high dirt holding capacity. Reinforced inner support skeleton prevents filter deformation under fluctuating fuel pressure. The filter medium resists degradation from diesel and common fuel additives. Each filter is tested for sealing and flow performance before delivery, OEM profile for easy installation during scheduled maintenance.

Applicable Models Compatible with medium and heavy commercial vehicles equipped with ISD6.7 diesel engine, widely adopted for engineering hauling and regional logistics transportation.

FAQ

Q1: What fault will be caused once the fuel filter is seriously clogged?
A1: Fuel supply flow is limited, engine power drops and may stall under heavy load.
Q2: Why must we bleed air after replacing this fuel filter?
A2: Air trapped inside the filter leads to difficult startup, rough idle and unstable power.
Q3: What regular maintenance action should be done on this fuel water separator?
A3: Drain the accumulated water from the drain valve periodically according to maintenance schedule.