The Ace Race Parts brand of NPT Weld Bungs are available in size ranges from 1/8" NPT to 3/4" NPT and are an affordable option for applications that require a "Butt-Weld x Thread" connection style. Our NPT Weld Bungs are precision CNC Machined from solid bar stock and are available in both 304 Stainless and 6061-T6 Aluminum.
Other O2 Sensor and Weld Bung options: