Since 1950, family-owned Wm. Cohen & Sons has operated as a truck-parts store, selling used trucks and supplying used and rebuilt components from its Thorndale, Pennsylvania yard. Its 30-acre operation includes more than 20,000 warehouse parts, 50–75 running trucks and over 450 trucks for salvage, with exporting services that ship parts worldwide. The company is particularly known for its large East Coast inventory of rears and transmissions, many available with a 24-hour turnaround.