oldieoldie, the factory check valve is directly behind the white item, it's mounted to the firewall. Maybe the original wasn't holding vacuum and someone fabb'd in the plastic one. Hard copper pipe will have a different diameter than the original steel line, I used soft copper (Air Conditioning/Refrigeration) for a short section due to the 1/2" od being the same as the steel. As long as you secure it so it can't vibrate, it should hold up quite-a-few years.
Last edited by 78buckshot; 01/01/2025 8:56 PM.
