Bosch 13069 Oxygen Sensor, Original Equipment (BMW)

The base ceramic probe combines oxides of zirconium, yttrium and other elements to form a tough base that resists cracking from mechanical and thermal shock. Patented platinum power grid is made with more platinum than all other competitors’ sensors for optimized sensing, delivering best-in-class performance and maximum service life. Fine particle filter prevents contamination of the electrode for longer service life and a consistently precise voltage signal to the engine computer. Coarse particle filter protects against exhaust gas and other chemical contamination, increasing sensor performance life.