SyderJL

What size wrench goes on to the stock O2 sensor? I am the mild of a DP install and thats all I have left but I need to buy a stubby wrench to tighten it but I can;t figure out what the size is.
Any help would be great.
Thanks Justus

rynberg

I don't know for sure, but I would guess 17mm. Don't forget some anti-seize for the threads.

GsrSol

I think it's alot bigger then 17mm but not sure. Just take a 19mm, 21mm, and 22mm under there with you

lilgt6

I think it is a 17mm......... I just did my DP a couple of weeks ago, but I guess my memory isn't what it used to be.

SyderJL

Well I am pretty sure its larger than a 19mm but I don't have larger wrenches than that.
Any one sure of the size>??

Mahjik

iTrader: (1)

Just run up to your local Autozone or similar store. They should have an O2 sensor socket that should fit (which is what I used).

SyderJL

I would use the socket but I have no way to get a ratchet in there that is why I need the stubby open end wrench.
If someone has an o2 socket could you please tell me what size it is??
Thanks again Justus

Mahjik

iTrader: (1)

Looks like a 22mm.

I do remember that my stock O2 and replacement where different sizes, but not too far off.

SyderJL

Thank you Mahjik after doing more research on the web I found the same answer 22mm.
http://www.scuderiaciriani.com/rx7/O...r_install.html
Thanks Justus

LT1-7

so you have the DP off? Why not just install the O2 when the new DP is still out of the car? Then you wouldn't have to use a stubby. Just use a good old cresent wrench

SyderJL

No the DP is already installed in the car, I didn't think about installing it beofre I put it in, now I wish I had b/c thats all I have to do is tighten it down.

wingsfan

I think it's 22mm. I used a 7/8" crows foot wrench for mine. Worked like a charm.

rotorbrain

the threaded portion is 18mm so that throws the 17mm crowd out of the equation. . . go with 22mm or vice-grips. hahahaha.

paul

IRPerformance

iTrader: (41)

Its 23mm.

SyderJL

Its 22mm just read the posts I figured it out
I even gave link and bought the wrench.
Thanks for the replies though

rotorbrain

i just wanted to make sure you knew that the threaded portion was 18mm. . .

paul