Any one know the part number for the Bosch o2 sensors(up stream). Are they 2 wire 3 wire or what? Where is the best place to get them? How much are they?

 

I think they are two wire. I paid $180. Have them done by a mechanic..

 

O2 sensors for a 1997 F-150 have four wires. Two for the heater circuit.

 

I got mine from Advanced Auto, any auto parts store should have em.
Just have em look it up in the computer. I think they were like $45 a piece when I got em. Make sure you get the removal tool, makes things easier.

 

There are 4 prongs in the plug, but Id swear there were only 2 wires....

 

Cant remeber how many wires but dont pay someone to do it. BUy them online for like 40 bucks and take about 40 minutes to replace both upstream. They are a joke. All it is is turning a wrench. Ford wanted 550 to change my front two Thing is those Bosch ones I dont trust. I continued to throw codes and ended up swapping them out twice. See if you can price some Motorcraft ones. And if they arent too pricey stick with those. IF they are bad you ought to see some better mpg

 

Thanks guys

 

Who makes the Motorcraft O2 sensors? Isn't it Bosch?

 

Yes, the motorcraft o2 sensors are made by bosch.