1. INNOVATIVE TECHNOLOGY Every Bosch Oxygen Sensor benefits from the technological and manufacturing experience gained from decades of production since first inventing the Oxygen Sensor in the late 1960's, ensuring longlasting, superior performance 2. FACTORY TESTED Seared appearance of protection tube is a result of a 100 percent fully functional quality test to ensure every Bosch manufactured sensor meets Bosch's rigorous standards for quality and performance 3. STAINLESS STEEL BODY Exclusive double laserwelded stainless steel body is totally submersible and sealed tight to protect against contamination from exhaust emissions — ensuring longer sensor life 4. FAST ACTING HEATER Fastacting heater optimizes sensor operation on Planar and 3, 4, and 5 wire Thimble type sensors allowing the oxygen sensor to reach its operating temperature quicker – within seconds – for optimum performance 5. READY TO INSTALL True Directfit OE connectors and harnesses, along with threads precoated with antiseize compound right out of the box, make installation simple and hassle