Copper Intercoolers Price $0.01 Prev Next Product Description We make-to-order copper and brass intercoolers upon request. Why copper? Because copper conducts heat almost twice as fast as aluminum. Metal Temperature Thermal Conductivity Temperature Thermal Conductivity - t - - k - - t - - k - (oF) (Btu/(hr oF ft)) (oC) (W/m K) Aluminum, pure 68 118 20 204 Copper, pure 68 223 20 386 Ours are hand built in the USA, sizes vary so prices vary. Lead times can range between 4 and 10 weeks; please plan accordingly.