How many O2 sensors does this truck have?

Tiny
1HAPPY1
  • MEMBER
  • 1999 MAZDA B4000
  • 4.0L
  • V6
  • 2WD
  • AUTOMATIC
  • 217,000 MILES
How many?
Wednesday, September 28th, 2022 AT 7:12 PM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,640 POSTS
Hi,

I attached an exploded view of the entire exhaust system below. From what I am seeing and reading, there are two. One is upstream from the converter and the other is right after it.

Take a look and let me know if that helps.

Take care,

Joe

See pic below.
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Wednesday, September 28th, 2022 AT 7:50 PM

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