Kwiksen 2pcs Oxygen O2 Sensor 234-3088 Upstream&Downstream For Subaru Impreza Legacy Direct Plug-In Replacement Cross Reference Part Number: 13445, 234-3088 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.