Dongfeng KR Complete vehicle intake duct assembly 1109710-KS1A0

Designed to work seamlessly with Dongfeng KR’s original air filter (filter precision: 5μm), the intake duct features a tapered airflow guide structure that optimizes air velocity before it reaches the filter. This design reduces turbulence by 30%, allowing the filter to capture dust, sand, and debris more effectively—achieving a filtration efficiency of over 99.5% for particles larger than 3μm. The duct also includes a built-in drain valve at the lowest point, which collects and discharges condensed moisture or accumulated dust, preventing filter clogging and extending the filter’s service life by up to 20%

The intake duct is constructed with a smooth, one-piece HDPE (high-density polyethylene) tube with a wall thickness of 4mm, featuring an aerodynamic curved profile that minimizes airflow resistance. Computational Fluid Dynamics (CFD) testing shows the duct reduces pressure drop to less than 2kPa at maximum air flow (300m³/h), ensuring the engine receives a steady, high-volume air supply. This optimized airflow improves the engine’s air-fuel mixture ratio, enhancing combustion efficiency—resulting in a 2-3% increase in power output and a 1.5% reduction in fuel consumption for long-haul driving scenarios

The HDPE material of the intake duct offers excellent resistance to UV radiation (passing 3000-hour UV exposure testing without brittleness), chemical corrosion (compatible with engine oils and coolants), and extreme temperatures (operating range: -40℃ to 85℃). The duct’s outer surface is treated with an anti-scratch coating, protecting it from damage during off-road driving or maintenance. Additionally, all connection points are reinforced with fiber-reinforced plastic (FRP) sleeves, increasing tensile strength by 50% and preventing cracking or deformation under vibration (up to 20Hz) during vehicle operation

The intake duct assembly is designed for quick, tool-free installation, featuring click-lock joints and pre-installed mounting clips that attach directly to the chassis brackets. The entire assembly can be installed in 15-20 minutes by a single technician, without the need for specialized equipment. For maintenance, the duct’s modular design allows easy removal of specific sections (e.g., the filter-side segment) to access the air filter or clean the drain valve. The transparent inspection window on the duct also enables visual checks of airflow and debris accumulation, reducing maintenance time and ensuring the intake system remains in optimal condition