When this new shippment just appeared, we had two remaining in stock. Just in time! This excellent new assembly is for the round recirculator GM heater. The used originals are usually impossible to repair. This unit includes upper and lower tank, attached outer band for securing to your large exterior metal housing and pipes for attaching heater hoses. Ready to install in your outer heater housing. NOTE: These are better than original because they are made to withstand the higher water pressure of modern engines. Over 600 sold with one return! Another quality restoration part from Jim Carter Truck Parts. The core is hand made with much time involved. Sold each. Sorry, the slight raise in price is due to the tarrif we were required to pay at the US port. 8 3/4" x 8 3/4" x 7" round core