Quote Originally Posted by RedHeartbeat View Post
18mm male and 1/8 NPT? Little bitty fitting for the OP gauge, right? If not then you have the one that is 3/8" NPT. Is it too small for your sender?
My adapter is to small on both ends. The end that screws into the block is to small, and the hole that the sensor screws in is to small. so the sensor wont screw into it.