Photo 1 of AUTO Occasion Oxygen Sensor O2 Sensor Upstream Downstream 4Pcs for GMC Yukon XL 2500 Yukon XL 1500 Yukon Sierra 3500 HD Replacement 234-4256 2Pcs 234-4668 2Pcs

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Photo 1 of AUTO Occasion Oxygen Sensor O2 Sensor Upstream Downstream 4Pcs for GMC Yukon XL 2500 Yukon XL 1500 Yukon Sierra 3500 HD Replacement 234-4256 2Pcs 234-4668 2PcsPhoto 2 of AUTO Occasion Oxygen Sensor O2 Sensor Upstream Downstream 4Pcs for GMC Yukon XL 2500 Yukon XL 1500 Yukon Sierra 3500 HD Replacement 234-4256 2Pcs 234-4668 2PcsPhoto 3 of AUTO Occasion Oxygen Sensor O2 Sensor Upstream Downstream 4Pcs for GMC Yukon XL 2500 Yukon XL 1500 Yukon Sierra 3500 HD Replacement 234-4256 2Pcs 234-4668 2Pcs