Dongfeng VR cabin Warm air inlet pipe 8101031-C1103

The inner wall of the warm air inlet pipe features a high-precision polished finish with no burrs, protrusions, or irregularities. This smooth surface minimizes airflow resistance, allowing heated air from the heater core to flow into the cab with maximum efficiency—reducing pressure loss by less than 5% (compared to aftermarket pipes with rough inner walls). The pipe’s uniform cross-sectional shape (consistent inner diameter throughout its length) ensures stable airflow volume, preventing hot air stagnation or uneven distribution. For Dongfeng VR drivers, this means faster cab warming in cold weather: the cabin can reach a comfortable temperature (e.g., 18-22°C) up to 20% quicker than with low-quality replacement pipes, enhancing driving comfort during winter or cold-region operations

Constructed from automotive-grade EPDM (Ethylene Propylene Diene Monomer) rubber composite material, this inlet pipe exhibits exceptional heat resistance and flexibility. It can withstand continuous exposure to high-temperature air (up to 120°C, the typical output temperature of truck heater cores) without softening, deforming, or releasing harmful odors. The EPDM material also maintains excellent flexibility in low temperatures (down to -40°C), preventing cracking or brittleness in freezing weather—critical for reliable performance in cold climates (e.g., northern China or high-altitude areas). Additionally, the material is resistant to oil, grease, and coolant (common fluids in the engine bay), ensuring it does not degrade or swell when in contact with these substances, extending the pipe’s service life to 3-5 years under normal use

To prevent warm air leakage and ensure maximum heating efficiency, the pipe is designed with double-lip sealing rings at both connection ports. These rings—made of high-density EPDM rubber—form a tight, airtight seal between the inlet pipe and the heater core/air intake manifold, eliminating air leakage (tested to retain over 98% of airflow under standard operating pressure). The pipe’s connection ports also feature a reinforced rib structure, which prevents deformation when clamped by hose clamps (included in the installation kit), ensuring the seal remains intact even under engine vibration. Additionally, the outer surface of the pipe is wrapped with a thin, heat-insulating layer (optional for some variants) that reduces heat loss during air transmission—further improving the heating system’s energy efficiency and minimizing waste of engine-generated heat

This warm air inlet pipe is engineered for hassle-free installation and future maintenance. First, it comes with pre-attached mounting clips that match the Dongfeng VR cab’s original mounting points, allowing installers to quickly secure the pipe to the cab interior or engine bay without drilling additional holes. Second, the pipe’s flexible material allows for slight adjustments during installation (up to 5° of angular flexibility), accommodating minor variations in component alignment and simplifying the connection process. Third, the included stainless steel hose clamps are easy to tighten with a standard screwdriver, ensuring a secure fit without damaging the pipe. Even for novice mechanics, installation can be completed in 15-25 minutes—significantly reducing maintenance time and labor costs. For long-term use, the pipe’s smooth outer surface is easy to clean, and its durable material requires no regular maintenance beyond visual inspections for cracks or leaks