Holley offers a full line of high performance fuel pumps. These Holley electric in-tank fuel pumps have been designed to the highest quality standards to provide increased performance and fuel efficiency for most stock, turbo, and supercharged applications. These Holley direct replacement products are made in the USA! The 12-933 in-tank fuel pump is intended for Throttle Body EFI systems up to 500 horsepower. It is designed to work in-tank as a direct replacement, so installation is a snap. The 12-933 is rated for continuous duty service and have been tested up to 2,500 hours.