Leaderboard

Tekton makes a 7/8" hex slotted socket for a 3/8" drive. The slot running down the side of the socket is to get by the wire coming out the top of the O2 sensor. I was told some years ago the this was the correct socket for removing 3800 V6 Buick O2 sensors.

Here are some pics of the O2 sensor, and removing it: Came out real easy....not stuck like some are. I used the 22mm O2 socket which fit perfect: Not too dirty, but some black carbon did come out when using a wire brush: Cleaned: Stamped "AC Spary".......Could this be original "fac-tree" equipment? New O2 Sensor should be here in a couple days.