🔧 Improved Radiator Vent Valve by GM Genuine Parts - 13267637 Review

I'm giving 4 stars because A) this plug shouldn't be plastic and B) the original shouldn't have failed in less than 7 years and there wouldn't be if it wasn't plastic.

Exact OE Replacement. It was a junk and so I had to replace it because it broke. GM should have redesigned this piece of shit a long time ago. A drain plug is a pretty simple thing. The price is too high for a cheap part that has been in production for so long and probably costs 20 cents to build.

I don't like that it's plastic because when it gets hot and you try to bleed the system by unscrewing the valve the plastic tends to soften. Too many attempts to unscrew the valve will result in the breather head breaking off or, if it cools but does not cool completely, the breather head will break. Most importantly, do not overtighten the exhaust valve. You may need to loosen the valve to remove any air bubbles from the radiator. The rest fits fine. I prefer to use a 12mm socket to loosen the