O2 sensors upstream and downstream?

2005 FORD RANGER
160,000 MILES • 3.0L • V6 • 2WD • MANUAL
Avatar
RICH NORBY
  • MEMBER
  • 30 POSTS
Trying to determine witch sensor is upstream and downstream I have trq osa61305 and trq osa61313 sensors.
Mar 27, 2026 at 2:02 PM
Advertisement
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.
Avatar
CANNON1349
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 861 POSTS
Hello, osa61305 can be used as the upstream and osa61313 can be used as the downstream.

Thanks,
William
Mar 27, 2026 at 3:25 PM