Typically you won’t need to replace a radiator cap very often, but it’s recommended you do so every 5 years to prevent issues from popping up.

How long do radiator caps last?

Typically you won’t need to replace a radiator cap very often, but it’s recommended you do so every 5 years to prevent issues from popping up.

Do coolant caps go bad?

You may have a bad cap if the radiator hose collapses. The vacuum won’t be released properly and it will cause the radiator hose to collapse during the cooling down period. If this happens, inspect the cap to see if there is any damage. If there is, replace it immediately.