8970320250 Original Excavator Oil Cooler for ISUZU 4BG1 ENGINE

The original oil cooler part number 8970320250 is the core cooling component of the lubrication system for the ISUZU 4BG1 diesel engine (displacement of approximately 3.5L, power of 70-85kW). This cooler is mainly suitable for excavators from brands such as Hitachi, Shengang, Sumitomo, and XCMG that are equipped with 4BG1 engines, such as Hitachi ZX120, ZX130, ZX160, Shengang SK120-5.5, XCG140W-8, and other models. Its common models are often labeled as 4BG1 and 4BG1T, which belong to water-cooled oil coolers and are usually integrated with the oil filter base for installation. When ordering, the complete engine model and serial number must be provided to ensure that its interface size, heat dissipation efficiency, and original lubrication system are fully matched.

This product is an original water-cooled oil cooler, usually with an aluminum alloy shell and copper core tube structure. The internal cooling water circulation exchanges heat with high-temperature oil to maintain the oil temperature within the optimal working range of 90-120 ℃. Its design can withstand the thermal shock of the engine under high load conditions, effectively preventing the viscosity of the oil from decreasing and the lubrication performance from deteriorating due to high-temperature oxidation. As an original component, its sealing gasket and interface thread are strictly matched with the oil circuit of the 4BG1 engine, ensuring zero leakage and long service life in high-pressure and high vibration environments. Some models also integrate an oil filter seat, achieving a compact layout.

It is recommended to check the inlet and outlet oil pipes of the cooler for leaks and the shell for cracks every 250 working hours; Monitor the engine for any abnormal noise caused by overheating of the oil. Regular maintenance: Check the sealing gasket for aging every 1000 working hours or when changing the oil, and replace the original sealing components if necessary. Installation points: Before disassembling the old cooler, the cooling system needs to be emptied; When installing new parts, it is necessary to evenly apply high-temperature resistant sealant on the joint surface and tighten the fixing bolts diagonally with a torque of 24.5 ± 4.9N · m. Fault prediction: If there is oil emulsification (milky white), oil film in the coolant expansion tank, or abnormal increase in oil temperature, it may be an internal leak in the cooler and immediate shutdown for maintenance is required.