The TOYOTA OEM RADIATOR CAP 16401-36020 is a genuine Toyota cooling system component designed to regulate pressure inside the radiator.
A radiator cap plays an important role in maintaining the correct cooling system pressure. It uses a pressure-controlled valve to help prevent premature coolant boiling and allows excess coolant to move into the recovery reservoir when system pressure rises. As the engine cools, the vacuum valve helps return coolant to the radiator.
A properly functioning radiator cap supports stable engine temperature management and helps protect cooling system components. A damaged or incorrect pressure cap may contribute to coolant leakage, overheating or cooling system pressure problems.
This part replaces selected earlier Toyota radiator cap references, including 16401-31520, 16401-31792 and 16401-62100. Always verify compatibility and pressure specifications before installation.
SPECIFICATIONS
Quality: OEM / Genuine
Full OEM Part Number: 16401-36020
Short Reference: 36020
Manufacturer Description: Cap Sub-Assembly, Radiator
Function: Regulates radiator cooling system pressure
Cooling System: Engine cooling system
Valve Type: Pressure and vacuum valve assembly
Related Replacement Numbers: 16401-31520, 16401-31792, 16401-62100
Pressure Rating: Commonly listed as approximately 108 kPa (1.1 bar); verify the original cap specification
Country of Origin: Japan
Package Quantity: 1 Piece
