Who is Rebuilders Automotive Supply? RAS is Automotive Cores, Catalytic Converters, and Recalls We source Cores, Catalytic Converters, and Recalled Air bags from the Auto Recycling Industry. RAS sells our Cores to the largest Automotive Parts Re-manufacturers in the world. RAS processes large quantities of catalytic converters and sells the material to the largest smelters. RAS is the US contractor for the recovery of defective Takata airbags from End-of-Life Vehicles RAS is Customer Focused, People Powered, Innovation Minded, and Market Driven. With over 50 years in the automotive recycling industry, RAS has over 30 product lines, 75,000 part numbers in inventory and over 2 million cores processed annually.