Who is Beck Arnley?
Supplying as in middleman, or supplying as in manufacturing?
B-A is a major middleman. AFAIK, they don't make anything. They are a good source for hard to find foreign parts in the US.
From their website:
Beck/Arnley takes pride in providing quality parts sourced around the world from over 400 manufacturers who work directly with product managers and experienced sourcing experts. The company has proprietary relationships with leading European and Asian sources. Beck/Arnley requires suppliers to meet high standards of quality and represent OE performance (form, fit and function).