O2 sensor for the downstream?

2004 NISSAN MAXIMA
145,387 MILES
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MLUCER7
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  • 1 POST
I have a blue downstream o2 sensor part but on the car the connection is green so i just need to know which is the correct o2 sensor for the downstream
Jul 28, 2025 at 10:41 AM
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STRAILER
  • ✓Experienced Mechanic
  • 55,542 POSTS
The downstream sensors are behind the catalytic converter, here is the location. Check out the images (below). Let us know if you need anything else.
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Jul 29, 2025 at 4:25 AM
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