Product details:

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.Hi-Flow Contour design for optimal air distribution
1/8NPT Reference port for boost gauges or carbureted fuel pressure regulators
The air cleaner stud entry can be drilled to 5/16 for installations with larger air cleaner studs
Available in Raw Aluminum and Black Powder Coat finishes