O2 sensors upstream and downstream?

Tiny
RICH NORBY
  • MEMBER
  • 2005 FORD RANGER
  • 3.0L
  • V6
  • 2WD
  • MANUAL
  • 160,000 MILES
Trying to determine witch sensor is upstream and downstream I have trq osa61305 and trq osa61313 sensors.
Friday, March 27th, 2026 AT 2:02 PM

1 Reply

Tiny
CANNON1349
  • MECHANIC
  • 903 POSTS
Hello, osa61305 can be used as the upstream and osa61313 can be used as the downstream.

Thanks,
William
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Friday, March 27th, 2026 AT 3:25 PM

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