Check the listing for details. Holley 162-591 EFI GM Style Filter/ Regulator -6AN. Condition: New. Listed at 61.43 USD. 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 pressureFeatures:GM style Filter / Bypass Style RegulatorAll stainless steel construction for improved corrosion resistanceDesigned with one inlet, one outlet, and one returnFixed pressure at 58 psiNominal Micron Rating: 5Can be used with other EFI systems that require 58 psiNot recommended with fuel pumps that flow over 450 LPHAvailable with stock quick connectors or with -6AN male connectionsReturn line required for proper regulator operation