Kwiksen Oxygen O2 Sensor 234-3111 Upstream For 2000-2001 Infiniti I30 Nissan Maxima 3.0L Direct Plug-In Replacement Cross Reference Part Number: 234-3111 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.