| Brand | Unbranded |
|---|---|
| Number of Sensors | 2 |
| Sensor Type | Air/Fuel Ratio Sensor |
| Item condition | New |
| OE/OEM Part Number | 234-5078, 234-4505 |
| Note | Only Fit US & Canada 2011 |
| Features | Direct Fit, Easy Installation |
| Superseded Part Number | L5D8188G1 |
| Placement on Vehicle | Lower, Upper |
Check the listing for details. 2pcs For 2010-2013 Mazda 3 2.5L L4 Oxygen O2 Sensor Upstream+Downstream. Condition: New. Listed at 44.54 USD. 3 2.5L L4 2011 2012 2013. Q: How do I know the O2 sensor is good or not?. If the sensor is good, further diagnosis is required. There're many different codes for specific functional failures, which are NOT necessarily relevant to the sensor.