YAPP USA Automotive Systems, Inc. is a world class, Tier 1 automotive supplier specializing in design, engineering and manufa ... cturing of automotive fuel system solutions. Using injection-molded and co-extrusion technologies together with our industry-leading product development know-how, we produce unique multi-layer blow-molded fuel management systems and components. Fuel tank and fuel transfer systems provide improved highly durable construction, greater space utilization and corrosion resistance. YAPP USA Automotive Systems, Inc. uses a proprietary blow molding process for filler pipe systems that enables a reduction in components required as well as improved product quality, for example, fuel filler pipes with molded in tabs and featuring multi-layer conductivity. read more