- Innovative technology backed by Bosch decades of oxygen sensor production since the late 1960s, delivering long-lasting, high-performance sensing. - Factory tested: 100% quality testing leaves a seared appearance on the protection tube as proof the sensor meets Bosch standards for quality and performance. - Stainless steel body: exclusive double laser-welded stainless steel construction is fully submersible and sealed to resist damage from exhaust emissions, extending service life. - Fast acting heater: quickly reaches operating temperature on Planar and 3-, 4-, and 5-wire Thimble-type sensors for optimum performance within seconds. - Ready to install: direct-fit OE connectors and harnesses, with threads pre-coated with anti-seize compound out of the box for simple, hassle-free installation. Use scenarios: - Replacing failed O2 sensors in modern gasoline engines to restore accurate sensor readings and engine control. - Installing in Planar or Thimble-type sensors in tight exhaust spaces where fast heat-up improves response and accuracy. - Fleet maintenance or repeated sensor replacement projects, benefiting from durable construction and easy installation to minimize downtime.