Acuity 5/16" Quick-Connect to -8 O-Ring Boss (ORB) Adapter, 62mm flange to tip

$29.00 USD

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  • 9th Gen Honda Civic Si (when the OEM fuel line going to the rail will be retained)
  • 2002-2006 Acura RSX (including the S)

NOTE: This is designed to fit standard -8 o-ring boss (ORB) ports found on ACUiTY's K-Series fuel rails as well as many other aftermarket fuel rails and fuel pressure regulators. 

ACUiTY's 5/16" Quick-Connect to -8 O-Ring Boss (ORB) adapter is made from 7075-T6 aluminum for strength with a gently tapered interior for maximum flow. They are particularly useful when running an aftermarket Honda K-Series-compatible fuel rail with a stock fuel line.

A silver anodized finish ensures high cosmetic quality and resistance to oxidation. These were designed for use with ACUiTY's K-Series Fuel Rails, but they are perfect for use in any gas, ethanol, or gas/ethanol mix fuel system where a -8 ORB port must be adapted for a 5/16" Quick-Connect style fuel line (which is a common style used on the fuel rail for many Honda K-Series vehicles except for vehicles with port injection).

The fitting comes supplied with a -908 FKM o-ring that is gasoline and ethanol (and E85, etc) compatible. Additionally, each fitting is designed with a flange at the base of the 7/8" hex to help protect against scratching the part the fitting is being threaded into during tightening.

This is one of 2 similar fittings ACUiTY produces. This design (1913-F06) is 62mm long from the flange to the tip, while ACUiTY's 1913-F07 fitting is 100mm long from flange to tip, for applications needing a longer reach.

If replacement o-rings are needed, order ACUiTY part number 1913-F08 (which includes 5pcs of -908, FKM O-Rings).


  • Fits in all fuel rails and other fuel system components that accept -8 ORB fittings
  • Adapts -8 ORB ports to 5/16" Quick-Connect for use with many Honda/Acura fuel lines
  • 7075-T6 Aluminum construction for added strength over traditional 6061-T6 fittings
  • Gently tapered interior for maximum flow
  • Anodized for durability
  • Flanged hex to help avoid wrench damage during installation
  • Supplied with ethanol-safe FKM o-ring

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