4pcs O2 Oxygen Sensor UP Downstream for 2007 Chevrolet Avalanche Tahoe GMC Yukon

1 x Downstream Oxygen Sensor. 2002 Chevrolet Trailblazer LS - 4.2L. 2002 GMC Envoy SLE - 4.2L. 2002 Chevrolet Trailblazer LT - 4.2L. 2002 GMC Envoy SLT - 4.2L. 2002 Chevrolet Trailblazer LTZ - 4.2L. 2002 Chevrolet Trailblazer North Face - 4.2L.