Bosch universal TPMS sensors measure the air pressure of the tire (one sensor per tire) for increased on-road safety, reduced tire wear, and optimal fuel efficiency. Legendary Bosch quality and durability are built into every universal TPMS sensor, ensuring a long service life and accurate readings. Sensors feature unlimited programmability for universal use on vehicles equipped with either 315MhZ or 433MhZ TPMS systems. Rubber valve stem for use on steel wheels (sensors with metal stems for use on aluminum wheels also available - see part number F026C00470). Sensors are designed for quick and easy installation. Bosch universal TPMS sensors must be programmed with the Bosch TPA 300 programming tool or tire pressure monitoring system tools from other major suppliers in the market. TPMS sensors will not communicate with vehicle unless programmed.