This is a replacement flame sensor kit . This sensor kit comes with a replacement wiring harness. Its overall length is 4-3/4 Inch. Model # 903600 Features: Sensor is 2-5/8 Inch long For use with residential gas furnaces For use with packaged G/E units Item Dimensions: 3.5″ L x 5″ W x 0.5″ H,Hardware > Tools,Nordyne