High-Volume Fuel Rail & Adj Pressure Regulator Fits Honda Civic B16A2 B16A3. 25-103BK x1 & 25-300BK x1. BRAND NEW IN BOX. Supports fuel flow up to 1,000 horsepower. No additional parts required for installation – installs with factory fuel line using supplied fitting. Pre-tapped for -6 AN or 9/16x 18 fittings. Specifically engineered for each application. Works with factory fuel line or custom fuel lines. 1/2 inch bore dampens backpressure pulses from larger fuel injectors. Comprehensive installation instructions, hardware, fittings and injector O-rings included. CNC Machined from billet aluminum. Black anodizing with laser engraving. Complete hardware, fittings and injector O-rings included. Manufactured and assembled in the USA. CNC-machined from 6061-T6 billet aluminum. Mounts directly to O. Fuel rail or AEM High Volume Fuel Rail. Patented interchangeable discharge orifices match output of virtually any fuel pump (single large port included). Accept a -6 AN or 9/16×18 fittings. Adjustable from 20 psi to maximum fuel pump capacity. Boost dependent rising fuel pressure rate (1:1). No additional parts required for installation. Patent # 6,298,828. AEM High Volume fuel rails feature a 1/2-inch fuel bore to support fuel flow for applications up to 1,000 horsepower. This large bore also dampens backpressure pulses created by larger injectors and works perfectly with stock injector sizes. An additional 1/8th NPT port is included to accommodate a nitrous set up or fuel pressure gauge. A custom fuel line fitting is included for the factory fuel line, and in most cases the ends of each rail are pre tapped to accept -6 AN or 9/16×18 fittings for users who want to use custom fuel lines. AEM’s Honda/Acura Adjustable Fuel Pressure Regulators are capable of supporting enough fuel flow for engines up to 1000 horsepower. Our patented interchangeable discharge ports enable the regulator’s output to match the output of any fuel pump. A single large discharge orifice is included. AEM includes a custom barb fitting to accommodate the factory fuel hose and the base of each regulator is tapped to accept a -6 AN or 9/16×18 fittings. Your address must be confirmed. Buyers who pay with unconfirmed addresses will not be accepted. We always look to satisfy our customers in whatever needs they may have. Any product you return must be in the same condition you received it and in the original packaging. Please keep the receipt. LET’S TAKE YOU TO THE.