- Innovative Technology: Leveraging decades of expertise since the invention of the Oxygen Sensor in the late 1960s, Bosch Oxygen Sensors deliver reliable and long-lasting performance that you can trust. - Factory Tested: Each sensor undergoes a comprehensive quality test, ensuring it meets Bosch's stringent standards for functionality and performance. The unique seared appearance of the protection tube indicates this thorough testing process. - Durable Stainless Steel Body: Featuring an exclusive double laser-welded stainless steel construction, these sensors are fully submersible and tightly sealed, providing enhanced protection against exhaust emissions and extending sensor lifespan. - Fast-Acting Heater: Designed with a fast-acting heater, Bosch Oxygen Sensors optimize operation for Planar and Thimble type sensors (3, 4, and 5 wire). They reach operating temperature in seconds, ensuring peak performance in various conditions. - Easy Installation: Each sensor comes with true direct-fit OE connectors and harnesses, plus pre-coated threads with anti-seize compound, making installation straightforward and hassle-free. Applications: 1. Ideal for vehicle emissions control systems, ensuring compliance with environmental regulations. 2. Perfect for enhancing fuel efficiency and reducing harmful emissions in your vehicle. 3. Suitable for both DIY enthusiasts and professional mechanics looking for reliable replacements. Bosch Oxygen Sensors are engineered for performance, compatibility, and longevity, making them the smart choice for maintaining your vehicle's optimal operation.