803077507 XCMG GR2605 motor grader radiator assembly

803077507 XCMG GR2605 motor grader radiator assembly

The XCMG GR2605 grader radiator assembly (803077507) is a core integrated component of the engine cooling system. It includes the radiator core, inlet and outlet water pipes, radiator cap, drain valve, and shroud. Manufactured strictly according to XCMG’s original factory design standards, cooling parameters, and process specifications, it is specifically designed for the Cummins QSB6.7 engine and suitable for harsh operating environments with high loads, high temperatures, and high dust levels, such as highway construction, airport construction, mining operations, and large-scale earthmoving. As the engine’s “cooling core,” it quickly dissipates heat from the engine coolant through forced air cooling, stabilizing the coolant temperature within the optimal operating range of 80-90℃. This prevents serious engine malfunctions such as power loss, cylinder scoring, and bearing failure due to overheating, directly ensuring continuous and stable engine operation. It is a high-quality original factory replacement assembly for GR2605 grader cooling systems that have aged, leaked, or experienced reduced cooling efficiency.

This radiator assembly features a high-efficiency all-aluminum heat dissipation core design. The heat dissipation pipes are made of aerospace-grade corrosion-resistant aluminum alloy, precision extruded (16mm diameter, 1.2mm wall thickness), and feature an internal rib reinforcement structure, increasing the heat exchange area by 30% compared to traditional bare pipes. The heat dissipation fins are manufactured using a corrugated stamping process with a fin spacing of 2.5mm, and are connected to the heat dissipation pipes via a mechanical expansion and brazing composite process, resulting in a tight fit and high heat conduction efficiency. The overall heat dissipation power reaches 38kW, easily meeting the cooling needs of an engine operating at full load. The core frame is welded from high-strength aluminum alloy profiles and has undergone pressure testing (pressure resistance ≥0.6MPa), demonstrating strong structural rigidity and the ability to withstand severe vibrations and impacts from sand and gravel during equipment operation, preventing deformation and leakage.

The radiator surface is equipped with an original factory-designed air shield, made of cold-rolled steel sheet and stamped with electrophoretic anti-corrosion treatment. This shield guides airflow through the radiator core, improving heat dissipation efficiency, and prevents damage to the fins from external debris. The inlet and outlet water pipes are made of temperature- and oil-resistant rubber hoses, secured to the core interface with clamps and fitted with nitrile rubber sealing gaskets for a tight, leak-proof seal. They can withstand a wide temperature range of -40℃ to 120℃ and will not age or crack with long-term use. The water tank cap features a pressure-regulating design with an opening pressure of 0.08-0.12MPa, effectively raising the coolant boiling point and preventing high-temperature boiling. It also has a pressure relief protection function to prevent damage to components from excessive system pressure.

The internal core employs a zoned flow channel design, optimized through fluid dynamics simulation, resulting in low coolant flow resistance and high circulation efficiency. The radiator fins are treated with a hydrophilic coating to reduce dust adhesion and scale buildup, lowering the risk of clogging and extending cleaning intervals. The radiator adopts a modular assembly process. All mounting brackets and bolt holes are precisely matched with the reserved positions of the XCMG GR2605 original vehicle cooling system. The hole tolerance is controlled within ±0.03mm. It fits seamlessly with the connection interface of the fan, air guide ring and coolant pipeline. It comes with complete installation accessories (clamps, sealing washers, fixing bolts). No additional modification or drilling is required during installation. Assembly can be completed by simply aligning and tightening. It is convenient and efficient to assemble and disassemble.

Core Technical Parameters

Part Model: 803077507
Part Name: Radiator Assembly (Engine Cooling Core)
Applicable Model: XCMG GR2605 Motor Grader
Compatible Engine: Cummins QSB6.7 Turbocharged Intercooled Engine
Material: Aerospace-grade corrosion-resistant aluminum alloy (radiator pipes/fins), cold-rolled steel sheet shroud, high-temperature resistant rubber hose, nitrile rubber seals
Process: Precision extrusion molding, mechanical expansion + brazing, corrugated fin stamping, electrophoretic anti-corrosion treatment
Heat Dissipation Power: 38kW
Tolerance Range: Temperature -40℃ to 120℃, Working Pressure 0.08-0.12MPa (Water Tank Cap Opening Pressure)
Structural Parameters: Radiator pipe diameter 16mm, fin spacing 2.5mm
Features: Highly efficient heat dissipation, vibration and corrosion resistant, reliable sealing, easy to clean and clog-proof, precise installation
Functions: Cools engine coolant, maintains system constant temperature, prevents engine overheating, protects stable powertrain operation

Core Advantages

Original factory standard precise fit, heat dissipation parameters perfectly matched with the engine; all-aluminum core + reinforced heat exchange structure, industry-leading heat dissipation efficiency; pressure-resistant sealing design, no risk of leakage; wind shield + hydrophilic coating, suitable for dusty environments; modular assembly, convenient installation and maintenance; ensures constant engine temperature operation, extending powertrain lifespan.

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3 805046570 Bolt M16×25 GB/T5783-2000
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