Confused about Cayenne oxygen sensors

[fluellen]

I plan on changing the front (before-cat) oxygen sensors in my 2006 Cayenne S. After doing some research, I am very confused about what type of oxygen sensors are used on these cars. Are they narrow band or wide-band sensors?

Looking at, for example, http://www.autopartswarehouse.com/shop_parts/oxygen_sensor/porsche/cayenne.html, they mention two different types of oxygen sensors for a 2006 Cayenne S: one being apparently narrow band, the other wide-band. This particular web site states, "Vehicles equipped with Air Fuel Ratio Sensors may look very similar to the Oxygen Sensor. Please confirm the correct part before ordering and if the connector does not match, do not install." Does this mean that some Cayennes come with wide band sensors, and some with narrow band sensors?

Can anyone shed light on this? Thanks!

[hahnmgh63]

Pretty sure the front's are 5 wire widebands and the rears are narrow band. The Bosch short number for yours that works great in a Google search and many times Amazon has the best deals are 17158 for the front left and 17157 for the front right. Without too much searching I found them on Autohausz AZ for $102 and they are a great parts place.

http://www.autohausaz.com/search/product.aspx?sid=005evkvzsceavc455geshoew&makeid=800019@Porsche&modelid=1432825@CAYENNE S&year=2006&cid=19@Emission System&gid=5132@OxygenSensor

[hahnmgh63]

P.S. found the 17157 & 17158 on Amazon for $82.48. That's a real good deal for OEM Bosch sensors and not some cut & splice aftermarket or universal units.

[fluellen]

Great, thank you! I had actually found the Amazon ones, but then wasn't sure if they'd be correct... thanks for clarifying!

[endless_corners]

I'm at 100k - is it recommended to change 02 sensors at this mileage? Or should I wait for a code?

[RFM]

http://www.bosch-lambdasonde.nl/downloads/catalogue_lambda_sensors_2011-2012.pdf Attached a list from Bosch, for all kind of cars, recommended replacement time, part numbers, etc. Porsche mentioned no deadline. Other members can do something with also. Hope it helps.

[wvicary]

I'm at 100k - is it recommended to change 02 sensors at this mileage? Or should I wait for a code?

If it isn't broken, why fix it?