for 1996-1999 4.6L UPSTREAM (FRONT),for 1996-1999 ELDORADO 4.6L UPSTREAM (FRONT),for 2002 ESCALADE 5.3L DOWNSTREAM (REAR) US BUILT MODELS,for 1999-2000 ESCALADE 5.7L DOWNSTREAM (REAR),for 2002 ESCALADE 6.0L DOWNSTREAM (REAR),for 1996-1999 SEVILLE 4.6L UPSTREAM (FRONT),for 1996-1997 ASTRO VAN V6 4.3L DOWNSTREAM (REAR)for 2002 1500 5.3L DOWNSTREAM (REAR),for 1996-1998 C1500 PICKUP V6 4.3L DOWNSTREAM (REAR),for 1996-1999 C1500 PICKUP 5.0L DOWNSTREAM (REAR),for 1996-1999 C1500 PICKUP 5.7L DOWNSTREAM (REAR),for 1996-1998 C2500 PICKUP 5.0L DOWNSTREAM (REAR),for 1996-2000 C2500 PICKUP 5.7L DOWNSTREAM (REAR),for 1996-2000 C2500 PICKUP 7.4L DOWNSTREAM (REAR)for 1996-2000 C3500 PICKUP 5.7L DOWNSTREAM (REAR),for 1996-2000 C3500 PICKUP 7.4L DOWNSTREAM (REAR),for 1997-2002 V6 3.8L UPSTREAM (FRONT),for 1996-2002 EXPRESS 1500 VAN V6 4.3L DOWNSTREAM (REAR),for 1997-2001 V6 3.1L UPSTREAM (FRONT),for 1997 V6 3.4L UPSTREAM (FRONT),for 1998-1999 V6 3.8L UPSTREAM (FRONT)for 1997-1999 V6 3.1L UPSTREAM (FRONT),for 1997; 2000 V6 3.4L UPSTREAM (FRONT),for 1998-2003 V6 3.8L UPSTREAM (FRONT),for 1996-1999 P30 VAN V6 4.3L DOWNSTREAM (REAR),for 1996-1999 P30 VAN 5.7L DOWNSTREAM (REAR),for 1999-2002 1500 PICKUP V6 4.3L DOWNSTREAM (REAR) VIN CODE-Wfor 1996-1998 C1500 PICKUP V6 4.3L DOWNSTREAM (REAR),for 1996-1998 C2500 PICKUP 5.0L DOWNSTREAM (REAR),for 1996-2000 C2500 PICKUP 5.7L DOWNSTREAM (REAR),for 1996-2002 1500 VAN 5.0L DOWNSTREAM (REAR),for 1996-2002 2500 VAN 5.7L DOWNSTREAM (REAR)for 1996-2002 3500 VAN 5.7L DOWNSTREAM (REAR)for 1996-2000 3500 VAN 7.4L DOWNSTREAM (REAR)for 1999 1500 PICKUP 5.3L DOWNSTREAM (REAR)for 1999-2001 2500 PICKUP 6.0L DOWNSTREAM (REAR) PASSENGER SIDEfor 2001 3500 PICKUP 6.0L DOWNSTREAM (REAR) PASSENGER SIDEfor 2001 C3 PICKUP 6.0L DOWNSTREAM (REAR) PASSENGER SIDEfor 1997-1999 88 V6 3.8L UPSTREAM (FRONT)for 1997-1999 CUTLASS V6 3.1L UPSTREAM (FRONT)for 1997-2000 SILHOUETTE V6 3.4L UPSTREAM (FRONT)for 1997-2003 BONNEVILLE V6 3.8L UPSTREAM (FRONT)for 1999-2000 GRAND AM V6 3.4L UPSTREAM (FRONT)for 1997-2000 GRAND PRIX V6 3.1L UPSTREAM (FRONT)for 1997-2003 GRAND PRIX V6 3.8L UPSTREAM (FRONT)Great performance and easy to installationO2 Sensor can improve engine efficiency performance and fuel economy,reduce CO2 and other harmful emissions,extend expensive Catalytic Converter lifeReplace Part Number:19178116, 19178945, 251313961, 25161128, 25163080, 25164488, 25312194, 25312201, 25312203, 25315373SG272, 25163080, 25164488, 25312194, 25312201colour:blackMaterial:metalPackage Contents:1 * Oxygen SensorOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +\/- 1-3cm.