ITEM NAME:O2 Oxygen Sensor Upstream or Downstream for 1997-2003 GMC Sonoma 2.2L 234-4 U2R4 O2 Oxygen Sensor Upstream or Downstream for 1997-2003 GMC Sonoma 2.2L 234-4 U2R4 Plug pins: 4-wire. Length: 480mm / 18.9inch Mounting style: Threaded-in. parts direct replacement. Brand New Oxygen Sensor. APPLICATION : For BUICK ALLURE V8 5.3L C 2008-2009 UPSTREAM (FRONT) & DOWNSTREAM (REAR) For BUICK CENTURY L4 2.2L 4 1996 DOWNSTREAM (REAR) For BUICK CENTURY V6 3.1L M, J 1996-2004 DOWNSTREAM (REAR) For BUICK LACROSSE V8 5.3L C 2008-2009 UPSTREAM (FRONT) & DOWNSTREAM (REAR) For BUICK LESABRE V6 3.8L K 1996-2003 DOWNSTREAM (REAR) For BUICK PARK AVENUE V6 3.8L 1, K 1996-2003 DOWNSTREAM (REAR) For BUICK RAINIER L6 4.2L S 2004-2005 DOWNSTREAM (REAR) For BUICK RAINIER V8 5.3L M 2006 DOWNSTREAM (REAR) For BUICK REGAL V6 3.1L M 1996 DOWNSTREAM (REAR) For BUICK REGAL V6 3.8L 1, K 1996-2003 DOWNSTREAM (REAR) For BUICK RENDEZVOUS V6 3.4L E 2002-2005 DOWNSTREAM (REAR) For BUICK RIVIERA V6 3.8L 1, K 1996-1999 DOWNSTREAM (REAR) For CADILLAC CTS V6 2.8L T 2006-2007 DOWNSTREAM (REAR) For CADILLAC CTS V6 3.6L 7 2006 DOWNSTREAM (REAR) For CADILLAC CTS-V V8 6.0L U 2006-2007 UPSTREAM (FRONT) For CADILLAC DEVILLE V8 4.6L 9, Y 1997-1999 DOWNSTREAM (REAR) For CADILLAC ELDORADO V8 4.6L 9, Y 1996-1999 DOWNSTREAM (REAR) For CADILLAC ESCALADE V8 6.2L 8 2007 UPSTREAM (FRONT) For CADILLAC SEVILLE V8 4.6L 9, Y 1996-1999 DOWNSTREAM (REAR) For CADILLAC SRX V6 3.6L 7 2005 DOWNSTREAM (REAR) colour:black Material:Metal + plastic Package Contents: 1*Sensor