D-Series Fuel Rail FPR Gauge Line Hose For D15 D16 D17 D15B7 D15B8 D16A6 D16Z6. For Honda Civic CR-X D15B7 D15B8 D16A6 D16Z6. Only D-Series Swapped Engines. Made From High Quality Black Anodized Aluminum. High Flow Fuel Rail, Fuel Pressure Regulator, and Fuel Pressure Gauge. 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. 1 x Fuel Regulator with 3 Ports (2 x inlets, 1 x return). 1 x Fuel Rail Line Kit. 1 x Liquid Filled Fuel Pressure Gauge 160Psi. 1 x AN-6 Port Plug. 3 x AN-6 Straight Fittings with Flares. 3 x AN-6 90 Degree Fittings with Flares. 1 x Fuel Rail Adapter. 1 x Fuel Regulator Bracket. 3 x AN-6 Braided Fuel Line. Please inspect your order upon receipt. We are a powerful factory producing auto parts. We have a professional sales and after-sales team that can provide you with excellent products and services. If you have any problems or concerns whatever with your order or products, please message us and give us a chance to assist you before you leave any feedback.