Kwiksen 4pcs Oxygen Sensor Upstream Downstream O2 Sensor 1 2 Replacement for 2000-2002 Toyota Tundra SR5 4.7L RWD,for 2001-2002 Toyota Tundra Limited-4.7L RWD,for 1998-2002 Lexus LX470 Base 4.7L Oxygen sensor 1 and sensor 2 bank 1 bank 2 for 1998-2002 Toyota Land Cruiser Base 4.7L Upstream and downstream o2 sensor for 2000-2002 Toyota Tundra Limited-4.7L RWD Pre-cat and post-cat oxygen sensor for 1998-2002 Lexus LX470 Base 4.7L Warranty: One year unlimited miles.Please check compatibility chart before buying.