HANDLES PRESSURE WITHOUT A HITCH

All materials and operating fluids of an engine cooling system are exposed to extreme temperature fluctuations. In cold winter weather, the engine starts at sub-zero temperatures and in some areas it reaches an operating temperature of more than 100° Celsius.

The system coolant level fluctuates correspondingly. Furthermore, when the cooling system warms up, an overpressure of more than 1 bar is generated and, when it cools down, a slight vacuum. The radiator cap plays a decisive role here: With its pressure relief valve, it protects the cooling system from excessive overpressure and equalises the vacuum generated when the system cools down.

Cool Facts

• High-grade material consisting of environmentally friendly, extremely sturdy and resilient polypropylene (plastic)

• Good heat-resistance for lasting durability

• Available as reservoir alone or complete with cap and sensor