Bosch Bosch 13111 Oxygen Sensor, OE Fitment (Chevrolet, Oldsmobile, Pontiac, Saturn )

Bosch Premium Thimble Type Sensors utilize an electrical heating element inside the thimble-shaped end to bring the sensor up to operating temperature in less than a minute. The patented thimble ceramic element featuring the Bosch patented Platinum Power Grid and the patented Bosch Double Layer Protection System optimize sensing, peak performance, and maximum service life.