234-4127 (4-Wire Oxygen Sensor) x2 Downstream Left + Downstream Right. 4Pcs Oxygen Sensor Oxygen sensor. FordE-1502009-20144.6L V8,5.4L V8. FordE-2502009-20144.6L V8,5.4L V8. FordE-3502009-20155.4 L V8.
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