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Upstream O2 Oxygen Sensor For BMW 325i 330i 525i X3 2.5L 3.0L - O2-7025
About this item
Got a check engine light and suspect the O2 sensor is shot?
This is an upstream oxygen sensor that fits a bunch of BMWs with the 2.5L and 3.0L engines.
We're talking 325i, 330i, 525i, 530i, X3, and others from the early 2000s.
It's part number O2-7025, also crosses to 250-25016.
It's a direct replacement, OE spec, so it screws right in and plugs up.
New in box, comes with a 1-year warranty.
If your fuel trims are off or you're failing emissions, swapping the upstream sensor is usually the first move.
USD$ 11.25 
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