ACEOS00012-Chevrolet GMC Buick O2 Oxygen Sensor ACDelco 12661898
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2018 Buick Regal Sportback L4 2.0L CONN USE 13587298 Downstream Left O2 Oxygen Sensor ACDelco 12661898

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This part will only fit a 2018 Buick Regal Sportback with these options.

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