What electrical plug is this?
Le Mans Master
Joined: Dec 2013
Posts: 6,338
Likes: 5,115
From: Charles Town WV
2024 Corvette of the Year Finalist - Modified
2023 C6 of the Year Winner - Modified
2022 C6 of the Year Finalist - Modified
o2 sensor harness... or whats left of it... not sure if its upstream or down stream off the top of my head.
Racer
Joined: Oct 2021
Posts: 299
Likes: 105
From: Dothan, AL
I agree, O2 sensor. Square plugs are downstream. Upstream have a trapezoid connector. With the headers, the downstream sensors were probably deleted. I bough my car with headers already on it and it only has the 2 upstream sensors.
Thread Starter
2nd Gear
Joined: Feb 2022
Posts: 2
Likes: 0
Thank you guys! So in that case, with the setup I have, that O2 sensor plug doesn’t do anything anyways. So I’ll just leave it out to the side?
Racer
Joined: Oct 2021
Posts: 299
Likes: 105
From: Dothan, AL
Yes, if nothing was plugged into it, you should be good. It will only be an issue if you ever decide to go back to stock manifolds and cats. And for the O2 sensors you do have, maybe check on the connectors at the sensors next time you or whoever is under it. Make sure they are well away from the headers.
