Agree vac can for emmisions.
What year?
What car?
What engine?
CAP?
If you're going for OEM restoration I get it. But if not just bypass it. I have my CAP can installed and hooked up but the spring is full tight making it effectively inoperative.
I think moparmarks nailed it
Mopar 71 Cuda Challenger Dart Roadrunner NOX Valve Solenoid PT 3438474 for sale online | eBay
