Feature: - According to the original factory specifications,perfect match for the original car - Own different test machines to design exact accurate parameter for our products.All switches were tested for performance. - Made by high quality material, lightweight, anti-rust, colorfast and durable. - Aftermarket product with premium quality - Stable performance, high reliability,suitable for replacing your broken one. - Adjustable fuel regulation from 4-1/2 to 9 psi - 220" (7/32") restriction: - 3/8" NPT ports ( 1 in, 2 out) - Mounting bracket included Material: Zinc Alloy Manufacturer Part Number:12-803 Type:4 1/2 to 9 PSI Carburetor Fuel Pressure Regulator Fitment: Fits for Holley 2 Port 4 1/2 to 9 PSI.