Mr. Gasket's high performance electric fuel pump is a direct bolt-on replacement for Holley Fuel Pump. Our products are 100 percent pressure tested for guaranteed performance and reliability. Features an in-line style rotor and vane pump design and 3/8 inch NPT inlet and outlet. This lightweight pump includes mounting bracket and hardware and is universal for all carbureted engines. Product Features:New quieter design outflows the competitionTested for guaranteed performance and reliability3/8 in. NPT inlet/outlet for easy installationUniversal fit - includes mounting bracketReturn style regulator eliminates vapor lock