View Full Version : Extender for Bolt-on Oxygen Sensors

07-25-2008, 01:48 AM
The pre-cat o2 sensor in my '92 Toyota Celica bolts on to the exhaust manifold rather than threading in (see picture below). I ceated a model of what I think would work for an extender for this type of sensor, which I know is in a lot of Toyotas and I think I also read somewhere that they are also in Saturns. Does anybody know what the cost would be to get something like this machined? Would it cost more than an EFIE?

07-27-2008, 01:26 PM
I have a 99 lexus that has an 02 sensor like the one you show ( its a toy you know). I found a relpacement sensor that has a bolts on adaptor that the 02 sensor serewes into. Advance Auto Parts has it. Beck/Arnley Oxygen Sensor Part Number 1568401 $152.51. With this setup you can screw in a spark plug antifouler.

My car got the same miles with or wo HHO. Thinking of getting this part.

Let me know if you try.

07-28-2008, 07:14 AM
Found the part at rockauto.com for $53.73 including shipping.:D

07-28-2008, 10:25 PM
just my 2 cents but sounds like you can by an efie cheaper and know it has been tested and could always sale it if it didn't work...