Contains the sacrificial anode rod, GLS heating element and the gasket
Can only be used for the Ariston GL2.5S, Ariston GL4S, Ariston Pro Ti GL2.5TiS, Ariston Pro Ti GL4TiS, Bosch Tronic 3000T ES2.5, and Bosch Tronic 3000T ES4 mini-tank water heaters
CANNOT be used for the Ariston GL6+S and Bosch Tronic 3000T ES8 mini-tank water heaters
CANNOT be used for any of the older Ariston heaters (i.e., the Ariston GL2.5, Ariston GL4, Ariston Pro Ti GL2.5Ti or Ariston Pro Ti GL4Ti)
Ariston GLS Kit - The Ariston GLS Kit contains the sacrificial anode rod for the Ariston GLS Series (#574305) as well as the heating element (#7738002301) and the GLS gasket (#994147). The GLS Kit can only be used for the new "S" Series Ariston GL2.5S, Ariston GL4S, Ariston Pro Ti GL2.5TiS, Ariston Pro Ti GL4TiS, Bosch Tronic 3000T ES2.5, and Bosch Tronic 3000T ES4 electric mini-tank water heaters. Please note that this GLS KIT CANNOT be used for the Ariston GL6+, GL8Ti and ES8 mini-tank water heaters. The Ariston GLS Kit cannot be used for the older Ariston heaters (i.e., the GL2.5, GL4, GL2.5Ti, and GL4Ti) because the heating element is different.