1. Replacement OE Numbers: 234-4256, 213-4229, 234-4407, 234-4651, 12609457, 12569429, 12573005, 12573167, 12611165, 92457789, 25024736 2. Compatible Models: This upstream and downstream O2 sensor is designed for 2003-2013 Chevy Silverado 1500 (4.8L), 2003-2006 Chevrolet Express 1500 (4.3L), and 2005-2013 GMC Sierra 1500 (6.0L). For a full list of compatible vehicles, please refer to the detailed images and description. 3. Quality Materials: Crafted from durable stainless steel and high-temperature resistant materials, this oxygen sensor undergoes rigorous testing to ensure reliability. Experience improved vehicle performance with enhanced stability, rapid response time, and a longer service life, bringing your car back to its optimal condition. 4. Installation Instructions: Engineered to meet OE specifications, careful disassembly is essential to avoid damage to the exhaust pipe and O2 sensor threads. Use professional tools for safe installation. Be aware that the exhaust system will be hot after vehicle operation; wait for full cooling before proceeding. Use Scenarios: - Restore your vehicle's fuel efficiency by replacing a faulty O2 sensor, reducing emissions and enhancing overall performance. - Ideal for DIY enthusiasts looking to maintain or upgrade their vehicle's exhaust system without the need for costly professional services. - Perfect for ensuring that your engine runs smoothly and efficiently, especially in older vehicles requiring regular maintenance.