Ok so I installed a 4-2-1 header, and catback on my 97 civic hx. My problem is the rear o2 sensor is not long enough. I know there are extensions, my question is I will be ordering 2 new o2 sensors. Is there a o2 sensor that will be longer then what is available stock for my car? That will work? I have 4 wire o2 sensors. Or do I have to order a new sensor and an extension?

I will be getting new o2 sensors regardless as mine are probably shot.

 

Some aftermarket have longer ones, like Bosch has 2 stocks numbers for the same sensor, but one has a longer wire.

 

You more than likely will still need an extension.

 

why do you think your sensors are shot do you have a cell telling you that?? if you need to get a new on just get teh Bosh universal one cut wires to length and add your plug to it.

 

Front o2 sensor has a ripped wire right at the boot, the rear one has been running with a bad front o2 sensor and a crack in the exhaust manifold for who knows how long. I am replacing them just cause. So can anyone link me to a longer wired rear o2 sensor for a 97 hx civic?

 

auto zone and get the universal 4 wire sensor and cut and solder your plug to fit to the harness been running on one for over 10years now

 

i can sell you an extension of any size for 20 bucks