AYB INDUSTRIES Delivers Replacement Parts and Maintenance Products for New Technology Diesel Engine Fuel Systems. Expansion is a core AYB INDUSTRIES objective. Our commitment to expansion will help AYB INDUSTRIES become the foremost supplier of replacement parts and maintenance products for New Technology Diesel Engine Fuel Systems around the world. As part of our continuing emphasis to improve our processes, AYB INDUSTRIES holds ISO 9001: 2008 certification. With more than 10000 part numbers in stock, AYB INDUSTRIES offers its customers the best possible service in the replacement parts industry. Thanks to a knowledgeable organization combined with cutting-edge technology, AYB INDUSTRIES is a dynamic organization that focuses on quality and experience. Our systems are designed around providing real time information wherever possible. Efficiency is emphasized from order inquiry, processing, and through delivery to the customer without ever sacrificing quality or accuracy.