Dongfeng DFAC truck parts Oil cooler filter element 15209T156A-B

Equipped with a multi-layer glass fiber filter media (120μm nominal filtration rating), the element captures 99.5% of solid impurities in engine oil—including metal shavings (from gear wear), carbon deposits (from incomplete combustion), and dust particles (from air intake leaks). The media’s pleated structure (60 pleats, 8mm depth) provides a filtration area of 0.8 m²—30% larger than cellulose media—extending the filter’s service life to 15,000 km (or 6 months) under heavy-duty use (e.g., construction, long-haul transport). It also maintains high flow rates (≥12 L/min at 40°C oil temperature) to avoid restricting oil circulation to the cooler, ensuring the engine’s oil temperature stays within the optimal 80–90°C range. Unlike low-quality media that clogs quickly, this glass fiber design balances filtration efficiency and flow performance, critical for DFAC trucks operating in dusty environments

Built to withstand high oil pressure and temperature fluctuations (common in commercial vehicle engines), the filter’s outer casing uses 0.8mm-thick cold-rolled steel (CR4 grade) with a tensile strength of 340 MPa, resisting bulging or cracking even at 10 bar maximum pressure (exceeding DFAC’s 7 bar system pressure). The top and bottom end caps are welded to the casing via ultrasonic technology, ensuring a leak-proof seal (tested to 8 bar pressure for 1 hour without oil seepage). A central steel tube (1.5mm wall thickness) supports the filter media, preventing collapse under high flow rates—avoiding media fragmentation that could contaminate the oil cooler or engine. The casing’s exterior is coated with a zinc phosphate layer (60μm thickness) for anti-corrosion protection, ensuring durability in humid under-hood environments

Engineered to perform in extreme oil temperatures (ranging from -30°C to 150°C, the full operating range of DFAC’s diesel engines), the filter media uses a heat-resistant resin binder that retains structural integrity at 150°C—preventing media degradation or fiber shedding into the oil. The nitrile rubber seal ring (Shore A hardness 70±5) maintains elasticity at low temperatures (-30°C), ensuring a tight seal during cold starts, and resists hardening at high temperatures (120°C), avoiding oil leaks. Even after 1,000 hours of exposure to 130°C oil (simulating long-term heavy use), the filter retains 98% of its original filtration efficiency and flow rate. This high-temperature stability ensures reliable performance year-round, regardless of climate or operating conditions

Designed for quick replacement by fleet technicians or DIY owners, the filter features a standard thread (M20×1.5) that matches DFAC’s oil cooler housing, allowing installation with a common filter wrench in 5–8 minutes. The top of the casing includes a knurled edge for hand-tightening (initial installation) before torquing to 25 N·m (per DFAC’s maintenance specs). Each filter is individually packaged in a moisture-proof plastic bag, preventing contamination before use, and includes a small packet of thread sealant (to enhance leak protection). It meets or exceeds DFAC’s original performance standards (ISO 4548-12 filtration efficiency testing) and is backed by a 12-month warranty against defects (e.g., media clogging, casing cracking, seal leakage). Regular replacement of this filter extends the oil cooler’s service life by 50% and reduces engine wear, lowering overall maintenance costs for DFAC truck fleets