Models part 100109594 fits
Protects the tank from rust. Makers suggest checking it every few years. Find your model number below before you order; the list is sorted by brand.
E1F40RD045American Water Heaters water heaterE1F40RD045VAmerican Water Heaters water heaterE1F40RS055VAmerican Water Heaters water heaterE1F50RD045VAmerican Water Heaters water heaterE2F40RD045American Water Heaters water heaterE2F40RD045VAmerican Water Heaters water heaterE6140R045DAmerican Water Heaters water heaterE6140R055DVAmerican Water Heaters water heaterECT66AO Smith water heaterECT120AO Smith water heaterFCG75251AO Smith water heaterFCG100245AO Smith water heaterGCNH30100AO Smith water heaterGS630UORT100State water heaterGS640UBRT100State water heaterGS640UOCT100State water heater5-30-2ORT8-2State Stove water heater5-40-2KRT8State Stove water heater5-40-20RT8-2State Stove water heater5-82-1KRT8State Stove water heater5-82-1ORT8State Stove water heater5-82-2KRT8State Stove water heater5-82-2ORT8State Stove water heater5-120-1KRT8State Stove water heater5-120-1ORT8State Stove water heater5-120-2KRT8State Stove water heater5-120-2ORT8State Stove water heaterFrom the Sears PartsDirect parts lists of the models above, checked November 2026. Amazon buttons open a search for the part number; we may earn a commission.