I recently did a LT install and at the time I did not realize the front O2's were different from the rears. I've heard that mixing them up can cause a bank of cylinders to run dangerously lean. Is there a visual difference between the front and rear O2 senors? .. If there is I can check by unscrewing my rears (which are just plugging the rear holes in the Ypipe and not connected bcause I'm using O2 sims).

Thanks for the help,

Sean

 

I got the impression an O2 sensor is an O2 sensor with the only thing being different is the length of the lead. After headers I used the rears in the front because of the longer leads and the car runs rich if anything.

 

Cool that's what I thought too but was told otherwise.

If anyone else does think otherwise .. please post.

 

the only difference is the length of the leads.....after my headers, i swapped a rear into the front because the front was shot and the rear was just plugging up the hole in the y-pipe (i have O2 simms naturally)...anyway, it ran fine....

EDIT: the only possible difference is some O2 sensors are heated (the 4 wire kind) and some aren't (the 3 wire kind) but all 4 LS1 O2s are 4 wire...

 

Cool. Thanks.