Moroso Valve Cover Bung - 1/2in NPT - Aluminum - 2 Pack

If you're setting up a custom breather system or need to add a port to your valve covers for a PCV setup, these Moroso bungs are what you'll want. They're designed to be welded onto your valve covers, giving you a clean, threaded 1/2 inch NPT port to work with. This makes it easy to connect hoses for crankcase ventilation or to run a vacuum line.

These bungs are made from aluminum, which is a good choice for this application because it's lightweight and easy to weld onto aluminum valve covers. You get a pair of them in this package, so you can outfit both sides of your engine if needed. Having a solid, threaded port like this makes a custom setup much more reliable than trying to jury-rig something else.