APDI was formed with a deep-seated belief that exceptional customer Service, quality products, customer driven programs and a low-cost company structure were key to providing customers what they had been asking for. With over 5,300 parts to choose from, APDI offers a wide variety of heat transfer and fuel system products. APDI Engineering Center is located in Westbrook, CT. At this location, engineering provides product management, new model development and approvals and engineering changes for the North American Aftermarket. Also, our in-house Engineering lab can provide supportive testing.