1997-1998 Audi A4 Quattro Upstream & Downstream O2 Oxygen Sensor | 2-Pc Direct-Fit | Heated | A-Premium APOS0406

A-Premium Aftermarket Oxygen Sensor: Ideal for Trucks, Cars, and Vans
A-Premium Oxygen Sensor is designed to meet the unique demands of trucks, cars, and vans. Our expertly crafted replacements come with a 3-Year unlimited mileage warranty, guaranteeing reliability across a wide range of vehicles. Use our Vehicle Selector to find the right Oxygen Sensor for your needs.

• Installation Position: Upstream & Downstream
• 2-PC A-Premium Oxygen Sensor
• Smooth installation with essential tools.
• Built with a focus on maximizing airflow and sensor efficiency.
• Formulated to precisely correspond with the specifications of your vehicle.
• Trusted by car enthusiasts for years of industry knowledge.

Quality Tested for Accuracy. Every A-Premium Oxygen Sensor goes through extensive testing to ensure precise air-fuel ratio measurements for peak engine efficiency and operation.
High-Precision Sensor Design. A-Premium employs state-of-the-art technology in their Oxygen Sensors to capture precise oxygen levels, ensuring an ideal balance of fuel and air for the engine's optimal performance.