Replacement OE Numbers 234 4256, 213 4229, 234 4407, 234 4651, 213 4229, 12609457, 12569429, 12573005, 12573167, 12611165, 92457789, 25024736 Applicable models The Upstream Downstream O2 sensor is compatible with 2003-2013 Chevy Silverado 1500 4.8L, 2003-2006 Chevrolet Express 1500 4.3L, 2005-2013 GMC Sierra 1500 6.0L. Please see the pictures and details page for more supported models. Material The oxygen sensor is made of stainless steel and other high temperature resistant materials. It has been extensively tested during manufacturing. It offers good stability, fast response and long life, helping your vehicle perform well after installation. Installation Instructions Made according to OE specifications. When disassembling, be careful not to damage the exhaust pipe or oxygen sensor threaded parts, and use professional disassembly tools. The exhaust pipe and sensor become very hot after running. Avoid burns and wait until the exhaust system has cooled completely before proceeding.