AF sensor for GT.B - where do I get one (at a decent price)?

[Manaz]

Hi all,

Yesterday, my car was diagnosed with a faulty AF/O2 sensor (front - Subaru seem to confuse the two when I call them, everyone else I ask says "front or rear", Subaru insist on calling them "top or bottom"), which may explain why it's chewing fuel at a ridiculous rate (16+L/100km in gentle driving) - replacement plugs have been fitted, silicon hoses are now all fitted (MAF hose, turbo inlet and throttle-body), and the car has been smoke tested and come up clean for boost leaks.

Subaru want $580+ for a replacement (they advised that it's recommended that it's replaced every 75,000km too). I have a feeling that may be a little more than I really need to pay.

I've found plenty of references to these part numbers online, and prices vary wildly.

Questions:

1. Should I stick with genuine? If so, are there any reliable sources of genuine parts from overseas I can trust to get me the part at a decent price?
2. If there are after-market/non-genuine options, what do I look for? There's plenty of AF/O2'lambda sensors listed online, but which one do I want/need?
3. Once I do have a replacement sensor in place, is there anything I can do to check that it's actually working correctly? I'm concerned that the ECU hasn't picked up the error (yet measuring resistance across the sensor apparently shows it plainly).

[Boostaddict]

There is a company called A&E or something.

I wish i could remember. But you can get repco or any mechanic to order thru them as i dont think they do cash sales.

I replaced my rear one in the exhaust and its the cheaper of the 2. The front one or AF sensor in the headers is the expensive one.

Ill see if i can get a company name

[Manaz]

$50 for a second hand one from a wrecker = #winning.

And even if that doesn't work, less than $150 for one shipped from the US (http://www.subarugenuineparts.com/, etc).