2006 Acura RSX with 16 PSI Cap Radiator Cap Honda OEM 19045-PAA-A01

Hi, I’m Mike from 1A Auto. We’ve been selling auto parts for over 30 years!

We're going to replace this radiator cap. You want to make sure that the engine is cold whenever you take this radiator cap off. Some of the signs that you have a bad radiator cap could be that the radiator cap itself is not releasing the pressure and it's causing the engine to boil over, and that would cause an overheating issue.

Another sign would be that the hoses are collapsed, over here. And also the coolant reservoir full of coolant, or overflowing. That would be caused by the vacuum system, the vacuum return in the cap. That could be stuck closed, and that's a sign that it's bad. And also it could be leaking or it could be sucking in air because of a bad seal. So at this point, we are going to twist this off to the left. There should be two tabs to go through. There's a radiator cap, that would be the vacuum return side and then the spring side and then the seals.

Here's our old radiator cap. Here's our new radiator cap from 1AAuto.com. They are similar designs, same seals, same retainers that hold it on. So what we'll do at this point, we'll install this. We're going to align this up with the tabs, we go this way. There's going to be one click and then you're going to do another click.

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