Set(4) Upstream Downstream O2 Oxygen Sensor For 2011-12 for Ford Explorer 3.5L

Condition:New|Brand:Unbranded|Number of Sensors:4|Type:Oxygen Sensor|OE/ Part Number:234-5038, 234-4489|Fitment Type:Direct Replacement|Custom Bundle:No|Manufacturer Part Number:234-5038, 234-4489, OS5578, DY1178|Condition:New|Superseded Part Number:9E5Z9F472D, BL3Z9F472A, BL3Z9G472A, CA38188G1, ZZDL18861, BE5Z9G444D, BH6Z9G444A, CA3918861, CA4118861, CK4Z9G444D|Modified Item:No|Placement on Vehicle:Front, Rear|UPC:686558496306