Airtex Fuel Delivery Systems. The leading aftermarket supplier of mechanical and electric fuel pumps and modular reservoir assemblies (MRA). Over 70 years of automotive aftermarket experiences enable Airtex to offer the latest technological advancements and deliver OE or better performance. Airtex fuel system products cover the full range of in-tank modular, electric, and mechanical fuel pumps. All incorporating advanced engineering methodologies. With category expertise, focused product development and streamlined manufacturing, Airtex is the clear choice for winning fuel system products.