///M Lambda / o2 sensor

[TomK]

I'm not sure, I wasn't going to, now I'm thinking I might. :? Z222M did you notice the markings or lack of? Sounds like yours have been fine.

 

[srhutch]

Looks to me as if the identification has been removed on the larger diameter. THe picture on page one is brass couloured where as that section the picture above is silver as if it's been scotch brited off. Has bosch marking on the plug though.

 

[AndyBeech]

On the connector, just noted that the connector number is slightly different to the BMW one I posted and also BMW one is code A and yours is Code 1......not sure what that means.....

 

[TomK]

Yes noticed that too, however I think the connectors are fairly generic across different bosch probes and I guess entirely possible that there are different revisions of it? If as I think it is used for many different applications that might explain why it's ok to have the bosch logo there?
I'd agree with srhutch that's exactly what it looks like to me, been removed off the sensor.

 

[GuidoK]

If there's no markings on the sensor itself, how do you know what sensor you have?

These are the ones (LSU 4.9) I have ordered some time ago (for an afr meter project ) from a company that specializes in making AFR meters etc
http://www.14point7.com/products/bosch-lsu-4-9
about £50 each (ex p&p)


it reads 0 258 017 025
connector:


lenght about 100cm from end connector to end sensor:


A quick google shows that these can even be had for as low as £40,- (incl P&P) on ebay:
http://www.ebay.com/itm/0258017025-Bosch-Oxygen-Sensor-Lambda-Sensor-5-Wire-17025-LSU-4-9-/131591674992

http://www.ebay.com/itm/Bosch-17025-LSU-4-9-Wide-Band-O2-Sensor-0-258-017-025-/141644525351

So you can save a considerable amount, especially if you need 2

 

[AndyBeech]

If there's no markings on the sensor itself, how do you know what sensor you have?

These are the ones (LSU 4.9) I have ordered some time ago (for an afr meter project ) from a company that specializes in making AFR meters etc
http://www.14point7.com/products/bosch-lsu-4-9
about £50 each (ex p&p)


it reads 0 258 017 025
connector:


lenght about 100cm from end connector to end sensor:


A quick google shows that these can even be had for as low as £40,- (incl P&P) on ebay:
http://www.ebay.com/itm/0258017025-Bosch-Oxygen-Sensor-Lambda-Sensor-5-Wire-17025-LSU-4-9-/131591674992

So you can save a considerable amount, especially if you need 2

Excellent info and funnily enough just spoke to a chap at finjector.com who are out of stock and can't get any in of the BMW part number (surprise surprise) but gave the part number 0 258 017 025 that you've also mentioned as exactly the same as the BMW one save for the wire is 5cm longer. Even has the same code on the connector as the BMW one. He gets them direct from Bosch Germany with all the markings intact and has them in stock ready to send for £133 delivered, for both, to the UK!
Finally settled on these for definite this time, direct from Bosch so should be totally legit

http://www.finjector.com/verkkokauppa/eng/client/search_results/0258017025

 

[Polarbert]

I'm pretty sure my o2 sensor is failing and throwing a check engine light how did these end up working out? I realise this was ages ago so the chap may not even have the motor anymore

 

[AndyBeech]

I'm pretty sure my o2 sensor is failing and throwing a check engine light how did these end up working out? I realise this was ages ago so the chap may not even have the motor anymore

The chap does still have the motor :wink: Working absolutely fine, no issues since fitting and done a fair bit of mileage since then. Seem to be a lot easier to find now than they used to be as well. Wonder how much the BMW part is these days.......