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O2 rear bungs

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Old Dec 21, 2004 | 05:48 PM
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Default O2 rear bungs

I recently purchased MACs with ORY. Obviously, I'll be running front sensors, but the rear ones will be deleted. However, I still have the two rear oxygen bungs to deal with.

Any idea how to cover them up on the Y-pipe ? Is there a plug that I can screw in, or do I need to weld them shut ?

Any ideas, comments would be appraciated.
Thanks
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Old Dec 21, 2004 | 08:16 PM
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Originally Posted by AdamSS
I recently purchased MACs with ORY. Obviously, I'll be running front sensors, but the rear ones will be deleted. However, I still have the two rear oxygen bungs to deal with.

Any idea how to cover them up on the Y-pipe ? Is there a plug that I can screw in, or do I need to weld them shut ?

Any ideas, comments would be appraciated.
Thanks
You can get a allen head plug. They are metric, I am drawing a total blank on the size?? I don't know if you can buy them separate, I got a plug when I bought a new 02 bung. Here's another idea take your old rear 02 sensor to a auto parts place, dig around in the bolt bins until you find a nut that will fit the sensor. Then you will know the size.
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Old Dec 21, 2004 | 08:45 PM
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There is a GM part for O2 sensor delete. I think the part number is posted on this board somewhere...
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Old Dec 21, 2004 | 09:51 PM
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ok thanks guys....both comments were very helpful...I'll try to look for both
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Old Dec 21, 2004 | 10:19 PM
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Cool - I found it at Jegs. o2-sensor fitting plug (18mm) p/n 555-30741
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Old Dec 21, 2004 | 11:23 PM
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Be sure to have the rear o2's tuned out of the PCM so you won't have a nice yellow SES light.
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