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Acuity Fuel Rail - K-series

WARNING: Cancer and Reproductive Harm

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Whether upgrading for additional fuel delivery needs, to run upgraded fuel lines, or to simply clean up your engine bay, ACUiTY's K-Series High-Flow Fuel Rail is the most versatile and refined solution available. With it's 1/8 NPT port on top, -8 o-ring boss (ORB) ports on both ends and another -8 ORB port located at the middle of the rail, there are a variety of ways you can set the rail up for your car. Each rail is constructed from 6061-T6 aluminum and has a satin-texture, anodized finish with laser-etched technical info + logos in four optional colors.

Among the rails' other features are countersunk mounting screw holes and supplied class 10.9+ hardware to replace the OEM studs. Each rail is also supplied with a stainless steel 1/8 NPT plug in case a top-mounted fuel pressure gauge is used. The end locations for the -8 ORB ports have been specifically machined to help reduce the likelihood of wrench damage to the rail's cosmetic finish during installation. As an added bonus rarely found on aftermarket rails, the rail allows the end-user to retain the OEM injector clips if you wish, just for some added peace of mind.

Tons of possible configurations (using optional fittings, sold separately).

Kit Contents

  • 1x fuel rail
  • 2x class 10.9 mounting screws
  • 1x stainless steel 1/8 NPT plug.

Note: You will need PTFE thread sealant (do not use teflon tape on fuel systems as it can foul injectors), and the appropriate fittings for your application. For a complete solution, see our application-specific fuel line kits.

Vehicle Applications

  • Designed for use with K-Series Engines (excluding K20C/K20B)
  • 7th Gen Civic Si and JDM EP3 Civic Type R*
  • 8th Gen Civic Si and JDM FD2 Type R*
  • 9th Gen Civic Si*
  • 02-06 RSX, RSX-S, and JDM DC5 RSX Type-R
  • 88-00 Civic / 90-01 Integra K-swapped vehicles*
    *Requires use of additional fittings based on application, see previous page for application-specific fitting requirements