Крышка наливной горловины радиатора Caterpillar 4865339

The Radiator Filler Cap is used to seal the top of the radiator and maintain proper pressure within the engine cooling system of equipment. It regulates coolant pressure, allowing the system to operate at optimal temperature ranges and preventing the coolant from boiling or evaporating prematurely. The cap includes a calibrated mechanism that opens at a specific pressure threshold to release excess coolant into the overflow tank and closes once pressure normalizes, ensuring consistent circulation. This process helps prevent overheating and maintains engine temperature stability under load.Attributes:• Enables coolant expansion and contraction control.• Supports frequent pressure fluctuations without failure.• Fits securely to resist vibration-related loosening.Applications:The Radiator Filler Cap is mounted at the radiator's fill neck to regulate coolant pressure, seal the system during operation, and manage overflow return.