Posted in For C Bodies Only, Mopar Mechanical Parts For Sale Desoto 1957 Fireflight. Fire sweep 325-326 NOS radiator. Part Number 1624970. marty mopar January 17, 2022 THIS IS NOT MINE............. FS Desoto 1957 Fireflight. Fire sweep 325-326 NOS radiator. Part Number 1624970. Radiator came from a Dodge Dealership liquidation in 1980 in Trenton NJ. Author: marty mopar