Balboa sensor assembly. Containing two sensors a Hi Limit and a Temperature Sensor which join to a single 4 pin connector.
Temperature Sensor 96" Cord X 3/8" Diameter x 2" Length Bulb. Hi Limit Sensor 31" Cord x 1/4" Diameter x 1 1/2" Bulb.
Balboa 30337
Also Replaces Balboa 30338