380905902 XCMG GR2605 motor grader air inlet pipe

380905902 XCMG GR2605 motor grader air inlet pipe

The XCMG GR2605 grader’s intake manifold (model 380905902) is a key airflow guide component in the engine’s intake system. Manufactured strictly according to XCMG’s original factory design standards and process specifications, it is specifically designed for the Cummins QSB6.7 turbocharged intercooled engine, suitable for harsh working conditions such as highway construction, airport construction, mining operations, and large-scale earthmoving, characterized by high dust, high loads, and fluctuating high and low temperatures. As a “dedicated channel” for air entering the engine, it is responsible for stably guiding clean air, purified by the air filter, into the turbocharger and intercooler, directly affecting intake efficiency, fuel-air mixture uniformity, and engine power output stability. It is a high-quality original factory part for the maintenance and replacement of the GR2605 grader’s intake system.

This intake manifold is integrally injection molded from high-strength glass fiber reinforced PA66 engineering plastic. The inner wall undergoes a high-gloss finish treatment (surface roughness Ra≤0.8μm), reducing airflow resistance by more than 12% compared to traditional metal pipes. This reduces intake losses and improves charging efficiency. The pipe structure has been optimized through fluid dynamics simulation, employing a smooth-transition swirling air passage design that generates stable vortices during intake, enhancing air-fuel mixing and promoting complete combustion. Combined with the engine’s high-pressure common rail system, this further improves fuel economy and power performance. Stainless steel reinforcing frames are embedded in key parts of the pipe body to enhance structural rigidity and withstand the high-pressure impact of the turbocharger system (maximum withstand pressure ≥0.6MPa), preventing deformation or cracking. The surface is treated with UV-resistant and anti-aging modifiers, enabling it to operate in a wide temperature range from -30℃ to 120℃, and is less prone to brittleness and cracking under long-term exposure to outdoor and engine compartment high-temperature environments. The intake manifold is equipped with original equipment manufacturer (OEM) fluororubber sealing connectors at both ends (with excellent oil and temperature resistance). These connectors fit tightly against the air filter outlet and turbocharger inlet, providing excellent sealing performance and effectively preventing dust and moisture intrusion while preventing pressurized air leakage, ensuring stable intake pressure. The connectors use quick-release clamps for easy installation and removal, requiring no special tools. The pipeline has pre-installed pressure sensor mounting interfaces and drain holes, ensuring full compatibility with the engine’s electronic control system. This allows for real-time monitoring of intake pressure, ensuring precise intelligent engine control. The drain hole design promptly removes condensate from the pipeline, preventing corrosion or icing that could affect intake.

The product’s mounting clips and brackets precisely match the original vehicle’s pre-drilled positions, with hole tolerances controlled within ±0.03mm. This ensures strong compatibility with other components of the intake system. No additional drilling or modification is required during installation; simply align and tighten. This quickly restores the intake system’s sealing and airflow performance, ensuring stable engine operation.

Core Technical Parameters

Part Model: 380905902
Part Name: Air Inlet Pipe (Dedicated for Air Inlet Guiding)
Applicable Model: XCMG GR2605 Motor Grader
Compatible Engine: Cummins QSB6.7 Turbocharged Intercooled Engine
Material: Glass fiber reinforced PA66 engineering plastic, stainless steel reinforced frame, fluororubber sealing joint
Process: One-piece injection molding, high-gloss inner wall treatment, fluid dynamics optimized design
Structural Features: Swirl-type air passage, smooth transition pipeline, embedded reinforced frame
Tolerance Range: Temperature -30℃ to 120℃, maximum withstand pressure ≥0.6MPa
Surface roughness: Ra≤0.8μm
Functions: Intake airflow guidance, vortex generation, leak-proof sealing, pressure stabilization, condensate drainage

Core Advantages

Original factory standard precise fit, easy installation; glass fiber reinforced material balances lightweight and high strength; fluid optimization design for high intake efficiency; fluororubber seal for excellent leak and dust prevention; wide temperature and pressure resistance, suitable for harsh working conditions; contributes to stable engine power output and reduces maintenance costs.

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