These are a 100% new, factory replacement Tri-Five heater core. Not a marginal recore like others sell. For '55-'56 Chevrolet cars without factory air conditioning. We also recommend the mounting plate, which is normally rusted beyond use.
Note: General Motors produced two different style heater cores for these vehicles. The heater cores we carry are a reproduction of the "deluxe" model, not the "standard."