5.5kW heater for vrious SUNDANCE®/SWEETWATER®/Portofino models. Common on 2003-2006 Palermo, Bahia and Cayman models. 2007+ Hartford and Hawthorne models equipped with a circ pump. 2007+ Hamilton, Chelsee, Certa, and Camden models. And 2008+ Burlington, Hartford, and Hawthorne equipped with a circ pump. 6500-402