Kwiksen 2pcs Oxygen O2 Sensor 234-4076 234-4079 Upstream&Downstream For 1997 1998 Dodge Ram 1500 3.9L 5.2L Direct Plug-In Replacement Cross Reference Part Number: 234-4076, 234-4079, 234-4010 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.