803400570 XCMG GR2605 motor grader primary fuel filter

803400570 XCMG GR2605 motor grader primary fuel filter

The XCMG GR2605 grader’s 803400570 primary fuel filter is a core component of the engine’s fuel system. Manufactured strictly according to XCMG’s original factory design standards, filtration precision, and installation specifications, it is specifically designed for the Cummins QSB6.7 high-pressure common rail engine. It is suitable for harsh working environments with high levels of fuel impurities and complex conditions, such as highway construction, airport construction, mining operations, and large-scale earthmoving. As the “first purification barrier” before the fuel enters the fine filter, it efficiently filters large particulate impurities (≥10μm) such as water, rust, sand, and gum from the fuel. This significantly reduces the filtration load on the fine fuel filter, preventing sticking, leakage, or poor fuel atomization in precision components such as the high-pressure fuel pump and injectors due to wear caused by impurities. This directly ensures the stability of the engine’s fuel supply and power output, making it a high-quality original factory part for fuel system maintenance and restoring the pre-filter performance of the GR2605 grader.

This fuel pre-filter features an integrated filter element structure design. The core filter material is high-strength composite filter paper, specially impregnated to provide excellent filtration performance and dust holding capacity. It achieves a filtration efficiency of over 98% for particles ≥10μm, while effectively separating free water from the fuel with a water separation efficiency of ≥95%. Accumulated water can be easily drained through the bottom drain valve, preventing water corrosion of fuel system components. The filter element shell is made of thickened engineering plastic (PA66 + glass fiber reinforcement) through a single injection molding process. It boasts high compressive strength and can withstand high pressure in the fuel system for extended periods (maximum withstand pressure ≥1.6MPa). It is also resistant to deformation and cracking under severe equipment vibration and alternating high and low temperature conditions (-40℃ to 85℃), exhibiting excellent sealing performance.

The filter element is equipped with original factory-specific nitrile rubber sealing gaskets at both ends, ensuring a tight fit with the filter seat interface. The sealing gap is ≤0.05mm, preventing unfiltered fuel bypass leakage. The filter seat connection threads are precision-machined and rolled for reinforcement, with an anti-loosening design, ensuring a reliable and secure fit after installation, and preventing loosening under long-term vibration. An integrated metal support mesh inside the filter element enhances the stability of the filter paper structure, preventing damage caused by high-pressure fuel impact. An anti-static coating on the surface effectively eliminates static electricity generated by fuel flow, reducing safety hazards.

The product dimensions and installation interface are precisely matched to the XCMG GR2605 original vehicle fuel lines and filter seats, with hole tolerances controlled within ±0.02mm. It forms a synergistic filtration system with the fuel filter, requiring no additional modification or adjustment during installation; simply tighten to secure. Disassembly is convenient, and replacement can be completed by a single person without professional tools. The filter element surface is printed with original manufacturer specifications and replacement cycle reminders, allowing users to maintain it promptly according to operating conditions (recommended replacement every 200 hours or when fuel consumption reaches 1000L), further extending the service life of the engine fuel system.

Core Technical Parameters

Part Model: 803400570
Part Name: Primary Fuel Filter (Pre-Fuel Purification)
Applicable Models: XCMG GR2605 Motor Grader
Compatible Engine: Cummins QSB6.7 High-Pressure Common Rail Engine
Material: Composite filter paper, PA66 + glass fiber reinforced shell, nitrile rubber sealing gasket, metal support mesh
Process: Impregnation treatment, one-piece injection molding, precision thread machining, antistatic coating
Filtration Accuracy: ≥10μm particulate matter filtration efficiency ≥98%
Water Separation Efficiency: ≥95%
Tolerance Range: Temperature -40℃ to 85℃, maximum withstand pressure ≥1.6MPa
Features: Highly efficient impurity filtration, strong water separation, high pressure resistance and vibration resistance, leak-proof sealing, easy replacement
Functions: Pre-filter for fuel, water separation, protection of fuel filter and high-pressure common rail system, static electricity elimination

Core Advantages

Original factory standard precise fit, working in tandem with the filter for protection; high-efficiency composite filter paper, excellent in both impurity filtration and water separation; high-pressure resistant sealing design, compatible with high-pressure common rail system; easy disassembly and assembly, high maintenance efficiency; extends the life of precision components in the fuel system, reducing repair costs.

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