These long awaited heater cores are NOW IN STOCK. The units have been waiting on a freighter ship in Los Angeles harbor. A complete heater core with tanks as original. For the Chevrolet and GMC dealer installed fresh air heater that attaches to the right side inner cowl panel. Made for modern higher water pressure systems as well as the low pressure original. Dimensions 8.25 x 4.5 x 3 1/2 inches. Allows you to save your rare accessory GM heater. Sold as each. Note: Not Correct for the 1953-early 1955 heater with recirculator option and the tall one inch wide vertical door. Another quality restoration part direct from Jim Carter Truck Parts. This is our third large order from these quality factory's. Sorry, the slight raise in price is due to the Tarrif we were required to pay at the US port.