Photo 1 of 2 PCS Oxygen O2 Sensors 1 Upstream and 1 Downstream Compatible with BMW 323Ci 323i 325Ci 325i 328Ci 328i 330Ci 330i 525i 528i 530i M3 X3Z3 Z4 2001-2006 325xi 330xi X54

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Photo 1 of 2 PCS Oxygen O2 Sensors 1 Upstream and 1 Downstream Compatible with BMW 323Ci 323i 325Ci 325i 328Ci 328i 330Ci 330i 525i 528i 530i M3 X3Z3 Z4 2001-2006 325xi 330xi X54Photo 2 of 2 PCS Oxygen O2 Sensors 1 Upstream and 1 Downstream Compatible with BMW 323Ci 323i 325Ci 325i 328Ci 328i 330Ci 330i 525i 528i 530i M3 X3Z3 Z4 2001-2006 325xi 330xi X54Photo 3 of 2 PCS Oxygen O2 Sensors 1 Upstream and 1 Downstream Compatible with BMW 323Ci 323i 325Ci 325i 328Ci 328i 330Ci 330i 525i 528i 530i M3 X3Z3 Z4 2001-2006 325xi 330xi X54