Alfdex AB is a Swedish company that develops and produces separators for cleaning of crankcase gases in diesel truck engines.

[1] Alfdex is owned by the two public companies Alfa Laval and Concentric who are quoted on the Stockholm Stock Exchange.

[citation needed] Alfa Laval started to investigate the possibilities of creating a similar product for truck engines.

In 2004 the first Alfdex separators were sold to Volvo Diesel Truck Engines in South Korea.

[3] Haldex Concentric won the 2009 Supplier Innovation Award from Deere & Company for its Alfdex separator technology.