Question about Edelbrock RPM Airgap - thermostat housing leak

69_340_GTS said
The only way I've ever gotten them to not leak was by replacing the housing with a billet aluminum one that seals with an o-ring. All the steel ones, like yours, and the die cast "chrome" ones totally suck.

This is what I'm running.

Mine is clear coated aluminum, but you can get them in different colors. Red, blue, aluminum, black. I think I paid around $80, but it was worth it.

CVR Thermostat Housings