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This oxygen sensor measures exhaust gas concentration to optimize air-fuel mixture for engine efficiency and emissions control on the BMW 6 (E63) 630i with the N52 B30 A engine. Removed from a 2006 donor vehicle, it shows wear and discoloration on the sensor body. Match the OEM codes 0258017029 or 753912403 against your original unit before ordering to ensure correct fitment.
This oxygen sensor measures exhaust gas concentration to optimize air-fuel mixture for engine efficiency and emissions control on the BMW 6 (E63) 630i with the N52 B30 A engine. Removed from a 2006 donor vehicle, it shows wear and discoloration on the sensor body. Match the OEM codes 0258017029 or 753912403 against your original unit before ordering to ensure correct fitment.
