Exhaust oxygen sensor

[scrappyslexus]

Gents,

Does anyone know the size bolt i need to keep the sensor in place. The bolts in the photo are not the correct ones.
Also, am i missing a gasket between the two pieces?

Thanks you in advance.

 

[flintknapper]

You have 'studs' on the exhaust flange which is typical of Toyota's O2 sensor mounting process. (stud with nut). M8x 1.25 usually, and yes, it looks as if you are missing the gasket.

 

[scrappyslexus]

Thank you, would you know the gasket part number

 

[flintknapper]

Thank you, would you know the gasket part number

Toyota OEM Oxygen Sensor Gasket - 89466-20020

 

[Mark WV]

Dorman #47021. At your local parts store for $8 or so

 

[scrappyslexus]

Got the gasket does it go under or over the bottom metal piece

 

[Mark WV]

Remove the two nuts. Pull out the o2 sensor, Place the gasket down on the two studs on the exhaust, then reinstall the sensor onto the exhaust on top of the gasket.