The New Oxygen Sensor-OE Style DENSO 234-4021 is a specific fit, downstream sensor with a threaded mounting type. It has a thread diameter of 0.708 inches and a wiring harness length of 12.01 inches. This heated sensor features a female connector gender and 4 wires for optimal performance. With a manufacturer part number of 234-4021 and no warranty, this DENSO sensor is designed for custom fitment in car and truck exhaust systems.