x40oz

I tried to search the site for this info but couldnt find what I was looking for. Anyone have the part number for the upstream O2 sensors for a 2006 F150 with 5.4?

I am pretty sure they are not working, however not throwing any codes. Is there a way to check?

x40oz

Part Number: 15733

So I got the part number, I guess my quesiton should have been, how important is it to replace this? I have no CEL, but the truck is running rich. I feel there is an issue with the A/F ratio. Am I correct that the upstream is more important than the down stream?

x40oz

Anyone installed these?


Motorcraft - Oxygen Sensor Part # DY835

x40oz

bump

x40oz

Thanks for all the feedback...

I called the Ford dealer today and they want $100 for the upstream O2 sensor.

Motorcraft DY835 Oxygen Sensor

I orderd 2 on Amazon for 108 with free shipping.