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Lambda sensor infront of the cat

Discussion in 'A3/S3 Forum (8L Chassis)' started by cruisah, Jun 13, 2012.

  1. cruisah
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    cruisah New Member

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    [Jun 13, 2012]
    Anyone knows the part# of the lambda sensor that is installed before the catalytic converter ?
    I had a track day few days ago, and the old lambda sensor was ripped out of the downpipe (it had poor thread already which is now completely gone)

    I was looking on 1-2-3 auction site but i dont know which one is the right one.

    Thanks for help guys!
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  3. cruisah
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    cruisah New Member

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  4. <tuffty/>
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    <tuffty/> Badger 5 Edition Staff Member Moderator

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    [Jun 13, 2012]
    Model/year of car may help... best bet is to have a look on Euro Car Parts or GSF and get a Bosch one not a copy/pattern part...

    <tuffty/>
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  5. cruisah
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    cruisah New Member

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    [Jun 13, 2012]
    Ofcoruse, stupid me :)
    It's an S3 from 2001, facelift model, 210hp.
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  6. cruisah
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    cruisah New Member

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    [Jun 13, 2012]
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  7. <tuffty/>
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    <tuffty/> Badger 5 Edition Staff Member Moderator

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    [Jun 13, 2012]
    As long as its a Bosch sensor then looks like the fella... GSF are fairly cheap for sensors... maybe worth seeing if you have one close to you..

    <tuffty/>
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  8. cruisah
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    cruisah New Member

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    [Jun 13, 2012]
    I'm from central Europe, so looking to buy online
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  9. kwistof
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    kwistof South East Events Moderator Regional Rep

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    [Jun 13, 2012]
    Not to sure if GSF sell Bosch lambda sensors for the S3- I tried getting one today but there ordering one in to find out. The bloke there said the part number didn't look familiar so I'll post up once I find out. £69 inc vat though which would be the cheapest Bosch lambda sensor I've found anywhere.

    If GSF turns out to be a copy then I'll be getting it from this place I think-

    Air Flow Meters, Lambda Sensors & Other Cheap Japanese Car Parts

    They post pretty much anywhere from the looks of things OP and sell the Bosch lambda sensors- I'd give them a call if your still unsure which one you need
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  10. cruisah
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    cruisah New Member

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    [Jun 14, 2012]
    I did a little research and it seems that pre-facelift models had same pre and post car lambda sensors.
    Facelift model front lambda sensor is a wideband one and has 5 cables. Its playing an active role in adjusting A/F ratio.
    And yes, its more expensive :)
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  11. <tuffty/>
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    <tuffty/> Badger 5 Edition Staff Member Moderator

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    [Jun 14, 2012]
    GSF do sell Bosch sensors... I bought mine from there :)


    You are correct :)

    APY prefacelift S3's are narrow band, AMK/BAM facelift S3's are wideband...

    I don't know if Euro Car Parts post outside the UK... if you get really stuck drop Bill at Badger5 an email as I am sure he can sort you one out... he sends stuff everywhere :)

    <tuffty/>
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  12. kwistof
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    kwistof South East Events Moderator Regional Rep

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    [Jun 14, 2012]
    Mine's an APY prefacelift S3 so narrow band :) Although when it was on the rollers Bill was saying it was a lot higher than narrow bands would reach/show :uhm: (Or something along those lines! lol)

    May be GSF don't do a Bosch pre-cat lambda for mine....still waiting for the call for them though!

    Can you remember what you paid for yours out of interest Tuffty?
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  13. <tuffty/>
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    <tuffty/> Badger 5 Edition Staff Member Moderator

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    [Jun 14, 2012]
    Mine was wideband and paid about £80 but that was nearly 2 years ago...

    <tuffty/>
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