What is this plug?
Seasoned HDF Member
Joined: Mar 2010
Posts: 38,528
Likes: 6,407
From: Honah Lee
Welcome Chad. Keeping you on top. WV transplant myself. Only as as suggestion, make you next new post over in the new member welcome area to say hello.
Hope you continue to enjoy your ride here with us on the HDFORUM.
Only as a suggestion, but very important, create a signature line similar to mine on your bike with year, model, and all the letters Harley assigned to the bike. It will appear at bottom of your post.
You can also add a favorite picture to the signature line.
Doing this will be helpful if you ask a question or to someone asking a question. All Harleys aren't the same with many changes and variations over the years.
You can also add a favorite picture for an Aviator postage stamp you see at the top left of your post.
Hope you continue to enjoy your ride here with us on the HDFORUM.
Only as a suggestion, but very important, create a signature line similar to mine on your bike with year, model, and all the letters Harley assigned to the bike. It will appear at bottom of your post.
You can also add a favorite picture to the signature line.
Doing this will be helpful if you ask a question or to someone asking a question. All Harleys aren't the same with many changes and variations over the years.
You can also add a favorite picture for an Aviator postage stamp you see at the top left of your post.
Stellar HDF Member
Joined: Jan 2017
Posts: 2,673
Likes: 2,077
From: Massachusetts
Its not for O2 sensor. There are two btw, one black and one gray, front and rear.
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Stellar HDF Member
Joined: Jan 2017
Posts: 2,673
Likes: 2,077
From: Massachusetts
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6th Gear
Joined: Apr 2023
Posts: 11
Likes: 3
From: WV
2022 FLHX by the way.
I think it has to be the optional third O2 sensor, bank 1 sensor 2. The service manual shows its location as under the right side cover. On mine its clipped to the brake line and one of the wire colors is off. Sure looks black/red on my bike and manual says black/orange. i didnt notice it didnt have anything plugged into it until I removed the exhaust. And since the plug is open without a rubber stopper I was a little concerned. Theres definitely not an O2 sensor on the crossover pipe, so I guess Ill just seal it up and maybe tie it up under the side cover.
I think it has to be the optional third O2 sensor, bank 1 sensor 2. The service manual shows its location as under the right side cover. On mine its clipped to the brake line and one of the wire colors is off. Sure looks black/red on my bike and manual says black/orange. i didnt notice it didnt have anything plugged into it until I removed the exhaust. And since the plug is open without a rubber stopper I was a little concerned. Theres definitely not an O2 sensor on the crossover pipe, so I guess Ill just seal it up and maybe tie it up under the side cover.
