Dongfeng GX truck parts Urea tank oil and air filter assembly 1205610-T13H0

Designed to remove both oil vapor and particulate contaminants from the air entering the Dongfeng GX’s urea tank, the assembly features a dual-stage filtration structure. The first stage uses a hydrophobic oil-adsorbing foam that traps 99% of oil vapor (common in engine crankcase ventilation) to prevent urea solution contamination—oil mixing with urea causes crystal formation, which clogs SCR injectors and catalyst. The second stage adopts a pleated micro-paper media (80 pleats, 5μm pore size) that filters 99.5% of dust, dirt, and debris, preventing particulate buildup in the urea tank. Unlike single-stage filters that only remove particles, this dual design ensures comprehensive protection for the urea system, extending the life of SCR components by up to 50%

Built to withstand the harsh chemical environment of urea systems (exposure to aqueous urea solution, which is slightly alkaline), the assembly uses corrosion-resistant materials. The filter housing is crafted from glass fiber-reinforced polyamide (PA66-GF30), a durable plastic that resists degradation from urea and road salt, maintaining structural integrity in temperatures ranging from -40°C to 120°C. The oil-adsorbing foam is made of nitrile rubber (NBR) that repels urea while retaining oil, and the micro-paper media is coated with a water-resistant layer to prevent moisture absorption. All metal components (e.g., mounting clips, hardware) are made of 304 stainless steel, avoiding rust and ensuring long-term stability—critical for parts exposed to urea and road moisture

Engineered for reliable operation and convenient upkeep, the assembly includes user-friendly features. It integrates a pressure relief valve that automatically opens when filter resistance exceeds 5 kPa (Dongfeng GX’s system specification), preventing damage to the urea tank or air intake pipeline from excessive pressure. The filter housing has a transparent top cover that allows technicians to visually inspect the media for contamination, eliminating the need for disassembly to check filter condition. Additionally, the filter element is designed for tool-free replacement: simply twisting the top cover releases the old element, and the new one snaps into place (taking 5–10 minutes). The assembly also includes a service reminder label printed with the recommended replacement interval (15,000 km or 12 months, per Dongfeng GX’s maintenance schedule), ensuring timely filter changes

By maintaining clean air in the urea tank, this assembly directly supports the Dongfeng GX’s SCR system performance and emission compliance. Clean air prevents urea contamination and tank buildup, ensuring consistent urea dosing to the SCR catalyst—critical for reducing nitrogen oxide (NOₓ) emissions to meet China VI and Euro V standards. A clogged or inefficient filter can cause urea crystallization, leading to SCR system errors, reduced fuel efficiency, and potential non-compliance with emission regulations. The assembly is manufactured in an IATF 16949 certified facility and undergoes strict testing—including filtration efficiency checks, pressure drop testing, and chemical resistance tests—to meet Dongfeng GX’s specifications. Backed by a 24-month warranty against manufacturing defects (e.g., housing cracking, valve failure, media tearing), it provides reliable protection for the SCR system and peace of mind for truck owners