Photo 1 of 234-4012 234-4018 O2 Oxygen Sensor Upstream Downstream 4PCS for 1996 1997 1998 1999 2000 2001 2002 Chevrolet/Chevy Silverado 1500 Tahoe Express 1500 Suburban, GMC Yukon XL Sierra, Cadillac Escalade

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Photo 1 of 234-4012 234-4018 O2 Oxygen Sensor Upstream Downstream 4PCS for 1996 1997 1998 1999 2000 2001 2002 Chevrolet/Chevy Silverado 1500 Tahoe Express 1500 Suburban, GMC Yukon XL Sierra, Cadillac EscaladePhoto 2 of 234-4012 234-4018 O2 Oxygen Sensor Upstream Downstream 4PCS for 1996 1997 1998 1999 2000 2001 2002 Chevrolet/Chevy Silverado 1500 Tahoe Express 1500 Suburban, GMC Yukon XL Sierra, Cadillac EscaladePhoto 3 of 234-4012 234-4018 O2 Oxygen Sensor Upstream Downstream 4PCS for 1996 1997 1998 1999 2000 2001 2002 Chevrolet/Chevy Silverado 1500 Tahoe Express 1500 Suburban, GMC Yukon XL Sierra, Cadillac Escalade