Noob AF Sensor/O2 Sensor question

[phuiie]

Hi i am looking to replace my current AF Sensor ( front one). Subaru has given me the part number (22680 AA310). while looking through some old threads. i can see that some users has mentioned 22641 AA391 as the Part number. can someone confirm me which AF sensor i need? i am planing to buy this @ http://www.amayama.com/ for $90-130


thanks

[phuiie]

Sorry the Part number that Subaru informed me is 22690-AA700. they gave me the wrong part number.. had to call them again.

[Ben]

Subaru do not sell the revised sensor. Garage 88 do. viewtopic.php?f=38&t=12832

You can buy the old one but your car will run much better with the revised version.

[kenks84]

So is this part number 22641AA391 the Subaru OEM one?

What Brand/Part Number is the revised version and can it be sourced from amayama.com?