Solenoid coil for use on solenoid 33013. This is just the electric coil. The stem, plunger, spring, o-ring and c-clip are sold separately. These solenoids are used on the following burners: CB 500, CB 525, CB 550, CB 90 HS, CB 85 HS *Also used on Energylogic/Blackgold and Firelake / Shenandoah