6AN to 3/8 Quick Connect Fitting Adapter for Hardline

(2 customer reviews)


260 in stock

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This adapter will allows to convert your OEM  3/8 hardline to 6AN. The adapter is a good option to convert your old lines to 6AN braided lines for clean and tucked look. It is anodized black CNC machined billet aluminum with double inner o-rings for a leak proof seal. The adapter is fuel and heat resistant and E85 compatible.


  • 6AN to 3/8  – male to female
  • Push on hard-line adapter – EFI fuel fitting
  • Hardline quick connect/disconnect adapter
  • CNC billet aluminum
  • Anodized black
  • Leak proof double inner o-rings
  • Fuel & heat resistant
  • Easy to install
  • E85 compatible
Includes: One (1) fitting with double inner o-rings
How to size your hardline:
  • Check the line thickness with a 1/4″, 5/8″, or 5/16″ wrench
  • OR: use a digital caliper then measure in mm
    • 5/16 = 7.9mm
    • 1/4 = 6.3mm
    • 3/8 = 9.5mm

 Installation Notes:

  • Push on the hardline and tight the bolt
  • NOTE: In order to prevent o-ring damage, lubricate the inner o-rings and hardline with oil or grease.

Additional information

Weight0.12 kg
Dimensions12 × 8 × 1 in


2 reviews for 6AN to 3/8 Quick Connect Fitting Adapter for Hardline

  1. Andrew Johnson (Verified Purchase)

    usGeorgia, United States

  2. Keith MITCHELL (Verified Purchase)

    usMichigan, United States

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