upstream pre-cat For 2004-05 2006 Scion xA 1.5L Oxygen 02 O2 Sensor 234-4800

Compatibility: 2003-2004 Pontiac Vibe 1.8L 2004-2006 Scion xA 1.5L 2004-2006 Scion xB 1.5L 2003-2004 Toyota Corolla 1.8L 2003-2005 Toyota Echo 1.5L 2003-2004 Toyota Matrix 1.8L Q&A: Q:What is Differences Between upstream and downstream O2 Sensor? .