Install any 1/8 NPT pressure or temperature sensor into an Aluminum pipe. Bung is required to be welded onto an aluminum pipe or manifold.Banks precision made high-quality NPT weld-on bungs. Whether you are adding pressure/temperature sensors to your engine, injection nozzles, an EGT to your exhaust (or anything for that matter), these weld-in bungs are exactly what you need. Build out your custom system to fit your needs.