FUAN Universal Radiator Cap 0.9

Product was used in an ongoing classic muscle car restoration project. It met my strict quality requirements.

Works as specified.

I installed one of these when doing a system refresh; new hoses, new radiator, and ran only with genuine Toyota coolant. Three years later I was tracking down a small coolant leak and found the inner part of the cap all rotted away, and the center section badly corroded. That's right, the COOLANT it is supposed to work with ate the metal away. Rubish.