Introducing our Upstream & Downstream Oxygen O2 Sensor designed to compatible with Trailblazer and Eny models from 2002 to 2003. This sensor is a crucial component in monito and optimizing your vehicle's oxygen s, e efficient fuel combustion and reduced emissions. Made with and durability in mind, our sensor is easy to install and compatible with your vehicle's existing systems. Trust our Upstream & Downstream Oxygen O2 Sensor to keep your Trailblazer or Eny running ly and efficiently. Compatible with Trailblazer and Eny 2002-2003: This oxygen sensor is specifically designed to compatible with these vehicle models, e a perfect match compatible with easy installation. Upstream & Downstream Functionality: This sensor can be used as both an upstream and downstream oxygen sensor, providing cue readings compatible with optimal engine perforce. Construction: Made with durable materials, this oxygen sensor is built to last and withstand the rigors of daily driving conditions. Improved Fuel Efficiency: By cuely measu the oxygen s in the gases, this sensor helps optimize fuel efficiency and reduce emissions. Precise compatible with and Function: Engineered to meet or exceed OEM specifications, this oxygen sensor delivers reliable perforce and precise readings compatible with a er driving experience.