Holley EFI fuel filters with built-in regulator provide a simple and clean means to fueling your LS swap. Available with OEM-style or -6AN connections, they feature an internal regulator set at 58 psi, along with an integrated 5 nominal micron rated filter. The bypass design allows you to run one inlet with one outlet to the engine, and a return outlet back to the tank. Holley EFI fuel filter regulators are ideal when performing a LS engine swap or any other fuel injection swap that is designed to run at 58 psi of static pressure
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