Photo 1 of O2 Oxygen Sensor Upstream 2Pcs: Compatible with Chevrolet 2003-07 Silverado 1500 V8 6.0L, Silverado 2500 HD V8 6.0L V8 8.1L, 2007-15 Silverado 3500 HD V8 6.0L, GMC 2003-07 Sierra 1500/2500 HD V8 6.0L

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Photo 1 of O2 Oxygen Sensor Upstream 2Pcs: Compatible with Chevrolet 2003-07 Silverado 1500 V8 6.0L, Silverado 2500 HD V8 6.0L V8 8.1L, 2007-15 Silverado 3500 HD V8 6.0L, GMC 2003-07 Sierra 1500/2500 HD V8 6.0LPhoto 2 of O2 Oxygen Sensor Upstream 2Pcs: Compatible with Chevrolet 2003-07 Silverado 1500 V8 6.0L, Silverado 2500 HD V8 6.0L V8 8.1L, 2007-15 Silverado 3500 HD V8 6.0L, GMC 2003-07 Sierra 1500/2500 HD V8 6.0L