Just got a new NTK(NGK) universal O2 Sensor. I noticed on the back it says:
Torque new oxygen sensor to:
with 18mm threads = 20-25 lb/ft
with 12mm threads = 13.5-16 lb/ft

Is this reffering to the threads of the hole it goes into? And if so, what is the thread mm on a stock exhaust manifold for S5 NA? Or what should I torque it to in other words? Thanks in advance.

 

Where did you find it? I'm curious. edit: nevermind you mean a reg. sensor don't you?

As far as the size, it'd be 18mm. Their torque#s are fine. You have one of those special sockets?

Cheers

 

Reg Sensor? not sure what that is. If you just mean a regular generic o2 sensor then yes it is, universal fit. I found it at a local auto parts store, cost me $40(canadian).

Special sockets? no I don't think I do. Was just gonna try to use a deep socket on a torque wrench, or an open end box end wrench. I know how much 20-25lb/ft feels like pretty much and was gonna tighten till it felt right.

 

Yeah I was thinking wideband, sorry.

The socket I was thinking of has a place for the wire to go.

I'm terrible about just doing things by feel.

 

ahhh.....no don't think I have one of those sockets. I am sure I can figure something out though. Thanks for the help.