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O2 sensors

B

BKRIEGER

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September 24, 2012
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Year, Model & Trim Level
2003 EXPLOERER
I have a 2003 Explorer 4.0 and would like to know how many O2 sensors it has (upstream and downstream)
Thank you in advance!
 






4 total - 2 up, 2 down. They're split by bank, so 2 (1 up, 1 down) per side.
 






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