Dongfeng xinjiang truck spare parts Return water hose 1311047-T5KE02Y

Built to handle the high-temperature coolant in Dongfeng Xinjiang’s engine cooling systems, this return water hose exhibits exceptional thermal stability. It is crafted from EPDM (Ethylene Propylene Diene Monomer) rubber with a reinforcement layer of high-strength polyester fiber, enabling it to withstand continuous operating temperatures of -40℃ to 135℃—covering extreme cold in northeast China and peak engine coolant temperatures (up to 120℃) during heavy-load operation. The EPDM material resists thermal aging, maintaining elasticity and structural integrity after 3000-hour exposure to 130℃ coolant. Unlike ordinary rubber hoses, it shows no hardening or cracking, ensuring reliable coolant circulation and preventing overheating-related engine damage

Engineered to endure the pressure fluctuations of truck cooling systems, the hose delivers excellent pressure-bearing capacity and leak-proof performance. Its 2-layer structure (EPDM inner layer + polyester fiber reinforcement) can withstand working pressures up to 1.2MPa, far exceeding the typical 0.5-0.8MPa operating pressure of Dongfeng Xinjiang’s cooling systems. The inner surface is smooth (Ra ≤0.4μm), reducing flow resistance and preventing coolant stagnation. The hose’s ends feature a textured design that enhances grip with hose clamps, ensuring a tight seal even under vibration (5-2000Hz, ISO 16750-3). It undergoes a 24-hour pressure test at 1.5MPa with no leakage, ensuring the cooling system maintains stable pressure and avoids coolant loss

Designed to be compatible with all common coolant types used in Dongfeng Xinjiang trucks, the return water hose exhibits strong chemical resistance. The EPDM inner layer is inert to ethylene glycol, propylene glycol, and corrosion inhibitors in coolants, with no swelling (volume change ≤3%) after 72-hour immersion. It resists degradation from road salt, diesel, and engine oil, preventing hose deterioration even in harsh working environments (e.g., coastal high-salt areas, construction sites). The polyester fiber reinforcement layer is resistant to moisture and mildew, avoiding structural weakening from long-term contact with coolant. This chemical stability ensures the hose’s service life of ≥150,000km, matching the truck’s maintenance cycle

Optimized for efficient fleet maintenance, the return water hose features a flexible design that simplifies installation. Its EPDM material offers excellent flexibility (bend radius ≥30mm), allowing easy alignment with the engine water pump and radiator connectors even in the crowded engine compartment. The pre-cut length (1200mm) and 45° bent section eliminate the need for on-site adjustments, while the included stainless steel hose clamps (M8×50) match the original mounting hardware. A single technician can complete replacement in 20 minutes using only a screwdriver and pliers—40% faster than non-OE hoses. The hose’s color-coded markings (blue stripe) and clear “IN/OUT” labels prevent installation errors, ensuring quick and accurate maintenance for fleet operators