Photo 1 of O2 Oxygen Sensor 234-4012 Upstream Downstream - Replacement for Chevy Suburban Express Silverado Tahoe GMC Sierra 1500 2500 Yukon Pontiac Replace 19178918, 213-1325, 19178930 1PC

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Photo 1 of O2 Oxygen Sensor 234-4012 Upstream Downstream - Replacement for Chevy Suburban Express Silverado Tahoe GMC Sierra 1500 2500 Yukon Pontiac Replace 19178918, 213-1325, 19178930 1PCPhoto 2 of O2 Oxygen Sensor 234-4012 Upstream Downstream - Replacement for Chevy Suburban Express Silverado Tahoe GMC Sierra 1500 2500 Yukon Pontiac Replace 19178918, 213-1325, 19178930 1PC