For Acura/Honda Integra Civic Del Sol Si B16A B16A1 B16A2 B16A3 B18C B18C1 B18C5 B20B B20Z. High Flow Fuel Rail, Fuel Pressure Regulator, and Fuel Pressure Gauge. OE fuel pressure regulator or adjustable fuel pressure regulator mounts directly to rail with no modifications. 1/8th NPT port is included to accommodate a nitrous set up or a fuel pressure gauge. 1/2 fuel bore to support fuel flow for applications up to 1000 horsepower. A custom fuel line fitting is included for the factory fuel line and the ends of each rail are tapped to accept -6 AN or 9/16 x 18 fittings for users who want to use custom fuel lines. Made From High Quality Black Anondized Aluminum. 1x High-Flow Fuel Rail Kit (100% Brand New Never Used Or Installed). 1 x Fuel Pressure Regulator Kit. 1 x Fuel Pressure Gauge. Includes ALL Hardware As Pictured. 1 x 6an Fitting for Fuel Rail-To-Fuel Line.