Introductions: Position: Upstream wires:4 TypeTube Oxygen Sensor Length (Sensor to Lead)450mmFeatures: Please check fitment notes & description for accurate information.Specifications Fitment: MAKE MODEL ENGINE YEARS SPECIFIC FITMENT CONDITION BUICK CENTURY V6 3.1L 1997-2000 UPSTREAM (FRONT) BUICK LESABRE V6 3.8L 1997-2003 UPSTREAM (FRONT) BUICK PARK AVENUE V6 3.8L 1997-2003 UPSTREAM (FRONT) BUICK REGAL V6 3.8L 1997-2003 UPSTREAM (FRONT) BUICK RIVIERA V6 3.8L 1997-1999 UPSTREAM (FRONT) BUICK SKYLARK V6 3.1L 1997-1998 UPSTREAM (FRONT) CADILLAC DEVILLE V8 4.6L 1996-1999 UPSTREAM (FRONT) CADILLAC ELDORADO V8 4.6L 1996-1999 UPSTREAM (FRONT) CADILLAC ESCALADE V8 5.3L 2002 DOWNSTREAM (REAR) US BUILT MODELS CADILLAC ESCALADE V8 5.7L 1999-2000 DOWNSTREAM (REAR) CADILLAC ESCALADE V8 6.0L 2002 DOWNSTREAM (REAR) CADILLAC SEVILLE V8 4.6L 1996-1999 UPSTREAM (FRONT) CHEVROLET ASTRO VAN V6 4.3L 1996-1997 DOWNSTREAM (REAR) CHEVROLET AVALANCHE 1500 V8 5.3L 2002 DOWNSTREAM (REAR) US BUILT MODELS CHEVROLET C1500 PICKUP V6 4.3L 1996-1998 DOWNSTREAM (REAR) CHEVROLET C1500 PICKUP V8 5.0L 1996-1999 DOWNSTREAM (REAR) CHEVROLET C1500 PICKUP V8 5.7L 1996-1999 DOWNSTREAM (REAR) CHEVROLET C2500 PICKUP V8 5.0L 1996-1998 DOWNSTREAM (REAR) CHEVROLET C2500 PICKUP V8 5.7L 1996-2000 DOWNSTREAM (REAR) CHEVROLET C2500 PICKUP V8 7.4L 1996-200 DOWNSTREAM (REAR) CHEVROLET C3500 PICKUP V8 5.7L 1996-2000 DOWNSTREAM (REAR) CHEVROLET C3500 PICKUP V8 7.4L 1996-2000 DOWNSTREAM (REAR) CHEVROLET CAMARO V6 3.8L 1997-2002 UPSTREAM (FRONT) CHEVROLET EXPRESS 1500 VAN V6 4.3L 1996-2002 DOWNSTREAM (REAR) CHEVROLET EXPRESS 1500 VAN V8 5.0L 1996-2002 DOWNSTREAM (REAR) CHEVROLET EXPRESS 1500 VAN V8 5.7L 1996-2002 DOWNSTREAM (REAR) CHEVROLET EXPRESS 2500 VAN V6 4.3L 1996-2002 DOWNSTREAM (REAR) CHEVROLET EXPRESS 2500 VAN V8 5.0L 1996-2002 DOWNSTREAM (REAR) CHEVROLET EXPRESS 2500 VAN V8 5.7L 1996-2002 DOWNSTREAM (REAR) CHEVROLET EXPRESS 3500 VAN V8 5.7L 1996-2002 DOWNSTREAM (REAR) CHEVROLET EXPRESS 3500 VAN V8 7.4L 1996-2000 DOWNSTREAM (REAR) CHEVROLET G30 VAN V8 7.4L 1996 DOWNSTREAM (REAR) CHEVROLET IMPALA V6 3.4L 2000 UPSTREAM (FRONT) CHEVROLET IMPALA V6 3.8L 2000-2003 UPSTREAM (FRONT) CHEVROLET K1500 PICKUP V6 4.3L 1996-1998 DOWNSTREAM (REAR) CHEVROLET K1500 PICKUP V8 5.0L 1996-1999 DOWNSTREAM (REAR) CHEVROLET K1500 PICKUP V8 5.7L 1996-1999 DOWNSTREAM (REAR) CHEVROLET K2500 PICKUP V8 5.0L 1997-1998 DOWNSTREAM (REAR) CHEVROLET K2500 PICKUP V8 5.7L 1996-2000 DOWNSTREAM (REAR) CHEVROLET K2500 PICKUP V8 7.4L 1996-2000 DOWNSTREAM (REAR) CHEVROLET K3500 PICKUP V8 5.7L 1996-2000 DOWNSTREAM (REAR) CHEVROLET K3500 PICKUP V8 7.4L 1996-1999 DOWNSTREAM (REAR) CHEVROLET K3500 PICKUP V8 7.4L 2000 DOWNSTREAM (REAR) NON-CALI. ESV CHEVROLET LUMINA V6 3.1L 1997-2001 UPSTREAM (FRONT) CHEVROLET LUMINA V6 3.4L 1997 UPSTREAM (FRONT) CHEVROLET LUMINA V6 3.8L 1998-1999 UPSTREAM (FRONT) CHEVROLET MALIBU V6 3.1L 1997-2000 UPSTREAM (FRONT) CHEVROLET MONTE CARLO V6 3.1L 1997-1999 UPSTREAM (FRONT) CHEVROLET MONTE CARLO V6 3.4L 1997; 2000 UPSTREAM (FRONT) CHEVROLET MONTE CARLO V6 3.8L 1998-2003 UPSTREAM (FRONT) CHEVROLET P30 VAN V6 4.3L 1996-1999 DOWNSTREAM (REAR) CHEVROLET P30 VAN V8 5.7L 1996-1999 DOWNSTREAM (REAR) CHEVROLET P30 VAN V8 7.4L 1996-1999 DOWNSTREAM (REAR) CHEVROLET SILVERADO 1500 HD PICKUP V8 6.0L 2001 DOWNSTREAM (REAR) PASSENGER SIDE CHEVROLET SILVERADO 1500 PICKUP V6 4.3L 1999-2002 DOWNSTREAM (REAR) VIN CODE - W CHEVROLET SILVERADO 1500 PICKUP V8 4.8L 2000-2002 DOWNSTREAM (REAR) US BUILT MODELS CHEVROLET SILVERADO 1500 PICKUP V8 4.8L 1999 DOWNSTREAM (REAR) CHEVROLET SILVERADO 1500 PICKUP V8 5.3L 2000-2002 DOWNSTREAM (REAR) US BUILT MODELS CHEVROLET SILVERADO 1500 PICKUP V8 5.3L 1999 DOWNSTREAM (REAR) CHEVROLET SILVERADO 2500 HD PICKUP V8 6.0L 2001 DOWNSTREAM (REAR) PASSENGER SIDE CHEVROLET SILVE