🔧 ACDelco GM Original Equipment RC104 18 PSI Radiator Surge Tank Cap Review

This is the perfect replacement for my original coolant reservoir cap in my 2002 Caddy Deville. For me urgently needed and contemporary.

A good replacement for the old one. I've replaced the expansion tank, thermostat, water pump and radiator, I've decided I might as well build a complete house.

The radiator cap is just bare. The picture shows the lid that was used on top of the lid but it was not included. The lid worked but I sent it back as I needed a black lid.

This OEM radiator cap for my 2004 Cadillac DeVille is very difficult to remove. I can start removing the cap by turning it counter-clockwise to the safety stop, but from now on I have to press down really hard and apply a lot of torque to turn it counter-clockwise to remove the cap. I actually had to ask a friend to put pressure on it while I was shooting it. I tried it with a regular 18psi radiator cap and it went up and down fairly easily.

I bought a Dorman coolant overflow tank for my 1999 Cadillac Deville, the cap would not close. Revain, great company, replaced the tank with another, the new tank did the same, the lid would not close. I ordered an AC RC104 GM Original Equipment18 PSI gas cap. no more leaking from the tank. I might as well send this tank back and order a 1999 Cadillac Devil (AC delco) radiator coolant reservoir, both original equipment.

Installed and leaking. I got a cap tester from an auto parts store and it only read 12psi, NOT 18 as advertised. It was manufactured in India - not sure when AC Delco started manufacturing in India but there appear to be serious quality control issues. with this product. Revain will take it back and send me a new one - I'll keep the tester until I get it and test it before installing it. that's why it was rated when it was new, so I think the tester is probably accurate.