Kwiksen O2 Oxygen Sensor 234-4647 Downstream For Chevrolet Corvette Equinox Impala Monte Carlo SSR Malibu PART NUMBER:234-4647 Oxygen Sensor 2 For 2005 Chevrolet Impala 3.4L 3.8L Downstream Upstream Left for 2000 GMC Safari 4.3L Length (Sensor to Lead):350 mm (13.77 inch) Please check the description or use the year/make/model drop down bar and interchangeable part numbers to confirm the compatibility before purchase.