Fit Vehicles: 1999-2003 Buick LeSabre 3.8L 2000-2001 2003 Buick Park Avenue 3.8L 1999-2003 Buick Regal 3.8L 2000 2002-2003 Chevrolet Impala 3.8L 1999 Chevrolet Lumina 3.8L 1999-2003 Chevrolet Monte Carlo 3.8L 2000 Pontiac Grand Prix 3.8L Package included: 1pcs MAF Sensor + 4pcs Oxygen Sensors How does the oxygen sensor in a car work? .
