This fuel tank cap is intended for secure and reliable sealing of the tank on Chinese 4500 series chainsaws. It is made of a tough, high-density polymer that is completely resistant to the aggressive action of petrol, additives and the mixture, preventing deformation of the material and loss of elasticity. Thanks to the precise thread manufacture and the integrated rubber gasket, the cap hermetically closes the tank, preventing dangerous fuel leakage and evaporation while the machine is working in the field. Timely replacement of a damaged, cracked or worn cap is key to the operator's safety and the correct operation of the engine. A faulty cap can allow sawdust, dust and moisture to enter the fuel system, which directly causes clogging of the fuel filter and carburettor. This replacement part is an ideal solution for quickly replacing an old or lost cap, allowing stable and safe continuation of work in all conditions. Technical specifications (dimensions): Manufacturer/Brand: high-precision replacement brand Outer diameter of the cap: about 60–62 mm Outer diameter of the thread: about 32–34 mm Inner diameter of the thread: about 28–30 mm Total height: about 18–22 mm Part type: high-precision replacement part Compatibility (list of models and application): Intended for all models of Chinese G-4500 series chainsaws of 45 cc, as well as other regional brands built on this chassis. Efficiently prevents spillage of the mixture and the entry of impurities into the tank while cutting wood in all positions. The time for replacement comes when the cap starts to leak fuel, when the thread slips from overtightening, or when cracks appear on the plastic body due to vibration and ageing of the material.