Dongfeng Xinjiang truck parts Connect the hose to the air filter 1109039-T8N301Y

A core advantage of the 1109039-T8N301Y hose is its ability to deliver consistent, unrestricted airflow to the engine—critical for maintaining optimal combustion and fuel efficiency. The hose’s smooth inner wall (surface roughness ≤0.8μm) minimizes airflow turbulence, reducing pressure drop by 15% compared to generic corrugated hoses. This ensures the engine receives the required volume of filtered air (up to 600 m³/h for high-power Dongfeng Xinjiang engines), supporting maximum torque output (up to 1800 N·m) and preventing power loss caused by airflow restrictions. For trucks hauling heavy loads (up to 50 tons) or operating at high altitudes, this optimized airflow translates to a 2-3% improvement in fuel economy—significant savings for fleet operators over 100,000+ annual kilometers. Additionally, consistent airflow reduces engine knock and pre-ignition, extending the lifespan of pistons and valves by 20%

Built to withstand the harsh under-hood environment of heavy-duty trucks—including extreme temperatures, oil exposure, and vibration—the 1109039-T8N301Y hose uses high-quality EPDM (ethylene propylene diene monomer) rubber. This material offers excellent resistance to heat (operating temperature range: -40°C to 150°C), preventing cracking or hardening in hot engine bays or freezing winter conditions. It is also impervious to diesel oil, engine coolant, and road salt—avoiding degradation that causes generic rubber hoses to leak or split within 1-2 years. The hose’s wall thickness (8mm) provides structural rigidity to resist collapse under negative intake pressure, while its flexibility allows for slight engine movement without tearing. This durability ensures the hose operates reliably for 300,000+ kilometers (equivalent to 3+ years of heavy use), outperforming standard rubber hoses by 2x

The 1109039-T8N301Y hose features a specialized sealing design to prevent unfiltered air from entering the engine—critical for protecting internal components from dust and debris. Both ends of the hose are equipped with integrated nitrile rubber O-rings (shore A hardness 70) that create a tight seal against the air filter housing and intake manifold flanges. The flanges are reinforced with metal inserts (1.5mm-thick steel) that distribute clamping pressure evenly, eliminating gaps caused by uneven tightening. Additionally, the hose’s outer surface is coated with a weather-resistant compound that repels water and dust, preventing external contaminants from seeping through small cracks. For Dongfeng Xinjiang trucks operating in dusty construction sites or desert regions, this leak-proof design reduces engine wear by 40%—avoiding costly repairs to cylinders, piston rings, and turbochargers caused by abrasive particles

The 1109039-T8N301Y hose is designed for hassle-free installation and minimal maintenance, reducing truck downtime. It comes with all necessary hardware: 4 stainless steel clamping bolts (M8×25mm), lock washers, and a tube of high-temperature sealant (compatible with EPDM rubber) for optional enhanced sealing. The hose’s flexible design allows for easy alignment with the air filter and intake manifold—no cutting or trimming required. Installation takes 20-30 minutes for a single technician using only a socket wrench, as the pre-drilled flanges align directly with factory mounting points. Maintenance is equally simple: the hose can be inspected during routine air filter changes (every 15,000 kilometers), and minor dirt buildup can be cleaned with a damp cloth. Unlike rigid plastic hoses that crack during removal, the EPDM rubber’s flexibility ensures repeated installation/removal without damage. For fleet operators, this easy installation and low upkeep mean lower labor costs and more time for trucks to stay on the road