MADE IN THE USA !     18 mm X 1.5 thread pitch, Wide band O2 sensor bung.   1. inch OD.  .625 total length.  18 mm. X 1.5 thread pitch.  These are precurved to fit most all exhaust tubes                                 Will fit most standard as well as most Wide band O2 sensors. Made from 6061 ALUMINUM Very weldable.)    Most vehicles use a standard 18 mm x 1.5 thread O2 sensor port. These bungs will accept most all standard sensors from most manufactures. If your O2 port is stripped or damaged, or the sensor is frozen in the port, These bungs are what you need to repair your exhaust system. If you are building a custom exhaust, or just replacing a stock exhaust system, these bungs are what you need. These weld bungs can be welded over an existing hole.                                  $1.00 shipping  to continental USA only!                         We make hundreds of these bungs, spacers, bushings and bosses. "inch and metric."  Email me thru Ebay with questions and we can list the part and quantity you want. This is for two pieces.