This pre‑fuel filter (part number: WG9412551301/2) acts as the primary fuel pre‑filter for heavy‑duty commercial vehicles. It is specially developed for heavy‑truck diesel systems, effectively separating water, sediment, rust particles and large‑size impurities from diesel fuel before fuel enters the fine filter and high‑pressure fuel injection pump. By intercepting harmful contaminants in advance, it protects expensive injectors and fuel pump assemblies, reduces component wear, stabilizes fuel supply performance and extends the service life of the whole fuel system. It performs excellently under poor‑quality fuel conditions, which are common in mining areas, remote construction sites and overseas markets.

This assembly combines an aluminum filter bracket and spin‑on filter cartridge. The precision‑cast aluminum mounting bracket offers high structural strength, good vibration resistance and stable thread interfaces for easy vehicle installation. The spin‑on filter canister adopts corrosion‑resistant shell material, suitable for long‑term work in complex temperature and humidity environments.

Inside the filter canister, high‑efficiency filter media achieves solid‑liquid separation. It traps dirt particles while gathering free water from diesel. Water and heavy contaminants sink to the bottom of the filter housing. Users can drain accumulated water through the bottom drain plug regularly to maintain filtering capacity. Sealing rubber components resist diesel corrosion to prevent fuel leakage at connecting joints.

1. Efficient water‑fuel separation: Effectively removes moisture mixed in diesel to avoid fuel‑system corrosion and injector damage.
2. Strong impurity interception: Captures sand, rust and sludge, greatly lowering failure risks of high‑pressure pumps and fuel injectors.
3. Anti‑vibration aluminum bracket: Durable casting bracket adapts to bumpy road conditions of dump trucks and engineering vehicles.
4. Convenient maintenance: Spin‑on cartridge design allows quick replacement, with a bottom drain screw for regular water discharge.
5. Strict quality inspection: Each unit passes leakage and pressure testing, reliable for long‑haul transportation and heavy‑load engineering operations.

Mainly compatible with HOWO heavy‑duty trucks, dump trucks and construction machinery. Widely exported to Africa, Latin America and other regions, it is an indispensable regular‑maintenance spare part for vehicle fleets and repair workshops.

Check sealing condition during installation. Periodically drain water from the filter bottom according to local fuel quality. Replace the whole pre‑fuel filter element on schedule to guarantee fuel‑system protection.