Kwiksen Oxygen O2 Sensor 234-4800 Upstream Replacement For 2003-2004 Toyota Corolla Matrix 1.8L("Only fit: FWD, Engine: 1ZZFE") Direct Plug-In Replacement Cross Reference Part Number: 234-4800 Position: Please check compatibility in Description Warranty: One Year Unlimited Miles This is Brand New High Quality Aftermarket Product. Meet the professional specification as OEM parts, for stable performance durable service.