8943997230 Original Excavator Oil Filler Cap for ISUZU 6HK1 ENGINE

The original oil filler cap part number 8943997230 (also written as 8-9439723-0) is a sealing component for the lubrication system of the ISUZU 6HK1 diesel engine (displacement 7.790L, power approximately 184kW). This filler cap is mainly suitable for excavators from brands such as Hitachi, Sumitomo, Shengang, Kais, XCMG, Sany, and Xiagong that are equipped with 6HK1 engines, such as Hitachi ZX330, ZX360, Sumitomo SH350, and Shengang SK350. Its universal model is often labeled as 6HK1, which belongs to the threaded screw in filling cap and is usually installed on the cylinder head cover or oil filling pipe. When ordering, the complete engine model and serial number must be provided to ensure that its thread specifications, sealing diameter, and original filling port are fully matched.

This product is an original oil filler cap assembly, usually made of glass fiber reinforced PA66 or die cast aluminum material, with an integrated fuel resistant O-ring seal inside. Its design can withstand continuous high temperatures (about 120 ℃), splashing oil, and high vibration conditions of the engine, effectively sealing the crankcase and controlling the exhaust. According to the maintenance manual, the installation torque for the oil port cover of the 6HK1 engine is 39.2N · m (4.0kg · m/29lb · ft). As an original component, its thread accuracy and sealing lip design are strictly matched with the filling port of the 6HK1 engine, ensuring zero leakage, dust prevention, and tamper resistance during long-term use.

It is recommended to check the O-ring of the filler cap for aging and cracking every 250 working hours; Whether the cover has cracks or deformation; Are there still oil stains seeping out after tightening. Cleaning and maintenance: Before adding engine oil, use a clean cloth to wipe the threads and sealing surfaces of the filling port and cover to prevent impurities from entering the lubrication system. Installation points: During installation, the O-ring should be correctly inserted into the groove, then manually screwed into the cover, and finally tightened with a torque wrench to a torque of 39.2N · m to avoid thread damage or excessive compression of the sealing ring caused by over tightening. Fault prediction: If oil sludge accumulates around the filling port or there is an oil smell during cold start, it may be due to the failure of the cover seal and needs to be replaced immediately.