Supplier and part numbers for good aftermarket o2 sensors

[cuh8er]

Just visited Toyota and they want $320 each for new oxygen sensors for my 1UZ.
I'm attempting to find the cause for my poor fuel economy and have read that the oxygen sensors are the best place to start.

Can anyone shed some light on where to get decent aftermarket sensors from and part numbers if possible?

Have heard Bosch are good, but don't know where to get them.

Any ideas/previous experiences welcome.

Cheers

 

[MX73 V8]

Bosch FTW.

Most good auto places will order it in for you if you know the part number.
http://www.bosch.com.au/content/language1/downloads/Oxgen_Sensor__Cat_WEB.pdf

There are pictures in the back of the catalogue as well to confirm the part numbers.

 

[cuh8er]

Priceless info cheers mate.
Lists a 'universal' 4-wire sensor for our 1UZ's.
The ones on all my engines are only single wire though.

Doesn't seem right to me.

 

[MX73 V8]

Some of the 1UZ's were four wire according to some wiring diagrams I have seen.

All I have seen are single wire as well.

(I used one of the universal flanged single wire ones on my other car (not a 1uz) seems to work)

 

[Bushwhacker]

Also, make sure your EFI coolant sensor is working, (code 22) the green sensor on the water bridge behind the coil. If it's disconnected/broken overfuelling will result, kinda like having the choke on all the time.

 

[Sudsy]

I got mine through Autopro. About $40 ea from memory

 

[cuh8er]

Sudsy, got a part number by chance?
Or a brand at least?

Cheers for the info, replaced the coolant sensor around 4 months back when I originally did the swap.