Volkswagen Bora 2001-2008 Oxygen Sensor 0258007309 Replaces 0258007050

When your Bora shows idle instability, noticeable fuel economy drop, stronger exhaust odor, or engine warning light, the oxygen sensor is likely aging or failed. It monitors exhaust oxygen content and feeds the ECU to adjust air-fuel ratio to meet emissions standards. OEM number: 0258007309; can replace 0258007050; compatible with 2001-2008 VW Bora. For replacement, work with the car cold; use a special socket to remove the old sensor, clean threads, apply anti-seize compound, and torque at 45-55 Nm.