Bosch 17351 Original Equipment Wideband Oxygen Sensor - Compatible With Select Audi A4, A8, TT, Quattro; Bentley Continental; Volkswagen Beetle, EuroVan, Golf, Jetta, Passat, Phaeton, Touareg

Extremely pleased with this purchase for my 2002 VW Passat 1.8T. It is almost one fifth of the price from my local garage - but is exactly the same product! I was a bit dubious at first, but I searched on the Bosch website for my vehicle model number - and up came this part number. So I was confident that it was the correct part, but thought maybe it was manufactured elsewhere, so perhaps not so good quality? But I was wrong! This is a 100% genuine full-spec Bosch part manufactured in Germany. See the pictures of the packaging I have uploaded. The sensor comes complete with a full installation kit and has the proper connector already fitted. Some other sensors don't include this and you have to fit the connector yourself. It is now installed in my car, and it works perfectly. I wasn't sure if my sensor needed replacing but after replacing half a dozen other components in the vacuum system and still having the MIL light coming on, I thought it worth a try, especially at this amazing price. A couple of tips if you are thinking of buying one. Firstly, do NOT remove the protective cap from the sensor until you intend to install it. It is there to keep the special lubricant in place so you can remove it in the future. Secondly, you must remove the old sensor whilst the exhaust is hot otherwise you can't get it out. Be very careful, protect your arms and hands from burns from the exhaust and engine block. Thirdly you must use a special 22mm oxygen sensor socket spanner, they are about £10 - but its impossible to remove without one. It appears to be a recommendation to replace this (upstream) sensor every 100K miles. My car has only done about 65K but the sensor had been contaminated with a silicon sealer used to seal the rocker gasket. Oxygen sensors do NOT like silicon - mine worked but was slow response, reduced the engine power output and caused lumpy idling. Much better now.

Bought this to replace one of the O2 sensors on my 02 1.8t Passat and it works flawlessly. Plugged in fine, installed just like it should, and has worked great for over 20k miles so far. The little zip ties that come with it are a nice touch, but I didn't use them. Would definitely buy again!

Seemed to have resolved a problem with a problem in my car. Bosch is a well known name in the automotive field. The fit was perfect!

Perfect Match and Replacement for OEM part. Car starts so much better than before and getting better gas mileage. No more codes regarding sensor either.

Quick delivery. Fit perfectly. Excellent value. So far it functions as it should.

Bei meinem Auto war schon längere Zeit die Lambdasonde defekt und hatte immer keine Zeit die dann mal zu wechseln, weil ich dachte, das Auto ist schon recht alt, das wird bestimmt ne harte Nuß die auszubauen. Aber Pustekuchen, mit dem Lambdasonden Werkzeug (auch hier gekauft) war der Wechsel innerhalb von ca 30min erledigt, Das Gewinde der Sonde war nicht fest gerostet und so war es ein Kinderspiel die zu wechseln. Ich fahre nun schon über 1000km und hatte keine Fehlermeldung von von der Sonde.