Description:

Radiator Cap for Toyota 4Runner Tacoma Tundra Highlander Sienna and Lexus Scion. This essential cooling system component acts as a two way pressure valve to prevent coolant from boiling and evaporating, protecting your engine from overheating.

• Fitment. Replaces part numbers 16401 31650, 16401 31520, 16401 31480, and 16401 46610
• Pressure Control. Maintains critical cooling system pressure to safeguard the engine against overheating damage
• Durable Construction. Built from materials resistant to high temperatures, corrosion, and oxidation
• Versatile Compatibility. Works with both open cooling systems and overflow reservoir type systems
• Easy Installation. Straightforward replacement process requiring no special tools
• Package Quantity. Includes 2 radiator caps