Dongfeng KR truck spare parts cab Warm air outlet pipe 8101032-C5103

Built to optimize the heating efficiency of Dongfeng KR’s cab, this warm air outlet pipe features a double-layer insulation structure that minimizes heat loss. The inner layer is made of heat-resistant PP (Polypropylene) with a smooth surface (Ra ≤0.2μm) to reduce airflow resistance, while the outer layer is wrapped in EPE (Expandable Polyethylene) foam insulation (8mm thickness) with a thermal conductivity of ≤0.03 W/(m·K). This design reduces heat loss by 75% compared to single-layer pipes—when the heater core outputs 80℃ warm air, the pipe delivers 75℃ air to the outlets, even in -30℃ ambient temperatures (northeast China winters). The 3-way diversion structure distributes air evenly (30% to dashboard, 40% to footwell, 30% to defroster), ensuring the entire cab reaches a comfortable 20℃ within 10 minutes of heater activation

Engineered for the dynamic cab environment of Dongfeng KR trucks, the pipe exhibits exceptional flexibility and structural durability. The PP inner layer offers a bend radius of ≥50mm, allowing slight adjustments during installation without cracking, while the EPE foam outer layer absorbs vibration (5-2000Hz, ISO 16750-3) to prevent pipe displacement. The pipe’s wall thickness (3mm for PP layer) resists impact from cab interior components and accidental bumps, withstanding a compressive load of 500N without deformation. The 3-way connector is reinforced with glass fiber-reinforced PP (GF30), ensuring no air leakage at the junction even after 100,000 opening/closing cycles of the heater system. This durability ensures the pipe maintains structural integrity for ≥150,000km of service

Designed to address the condensation and moisture issues in cab HVAC systems, the pipe integrates anti-condensation and corrosion-resistant features. The EPE foam insulation prevents temperature differences between the warm pipe and cold cab air, eliminating water droplet formation on the pipe surface—avoiding mold growth and cab interior water damage. The PP inner layer is inert to the slight moisture and dust in the HVAC system, with no degradation or discoloration after 2000-hour exposure to humid air (90% relative humidity). The plastic mounting clips are made of PA66+GF30, resisting UV aging (2000-hour QUV testing) and ensuring a secure hold on the cab sheet metal. Even in humid southern China or cold northern regions, the pipe remains free from corrosion and condensation-related issues

Optimized for efficient fleet maintenance, the warm air outlet pipe features a user-friendly plug-and-play design. The 3-way connector uses a snap-fit mechanism that mates with the heater core outlet and cab air ducts in 5 seconds, requiring no tools for connection. The 8 integrated mounting clips align with the cab’s original threaded holes, securing the pipe with M4×10 self-tapping screws—two technicians can complete the entire replacement process in 40 minutes, 50% faster than non-OE pipes. Clear “INLET/OUTLET” markings and color-coded diversion ports (red for dashboard, blue for footwell, green for defroster) prevent installation errors. The pipe’s lightweight design (1.2kg) makes handling easy, while the pre-formed bends eliminate the need for on-site shaping, ensuring quick and accurate maintenance for fleet operators