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Est. 1957
Aeromotive

Aeromotive AN-04 O-Ring Boss / 5/16in Hose Barb Adapter Fitting

$21.37

On Backorder — Expected to ship by May 7, 2026

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Connects AN-04 O-ring boss fittings to a 5/16in hose. CNC-machined aluminum for less restriction.

Key Features

  • AN-04 O-ring boss to 5/16in hose barb connection — adapts different fuel system components.
  • Less restriction — smoother internal transitions improve fuel flow.
  • 6061 T6 aircraft grade aluminum construction — lightweight and strong.
  • Black anodized finish — resists corrosion and looks good.
  • Compatible with gasoline and alcohol-based fuels — suitable for most fuel types.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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About this part

Product Details

More area and smoother transitions from the inlet to the outlet, resulting in less restriction than any other fitting line. The Aeromotive line of custom fittings, adapters and hose-ends are a step above the norm, offering uncompromised fuel flow and positive sealing. Constructed of 6061 T6 aircraft grade aluminum or stainless steel, each component is CNC-machined for precision fit and unmatched flow. All billet aluminum fittings are anodized Type II bright dip black for corrosion protection and unrivaled aesthetics. We offer a complete line of hard to find fittings from OEM specific connections to AN adapters.?All Aeromotive fittings and adapters are fully compatible with gasoline and alcohol based fuels.More area and smoother transitions from the inlet to the outlet, resulting in less restriction than any other fitting line. The Aeromotive line of custom fittings, adapters and hose-ends are a step above the norm, offering uncompromised fuel flow and positive sealing. Constructed of 6061 T6 aircraft grade aluminum or stainless steel, each component is CNC-machined for precision fit and unmatched flow. All billet aluminum fittings are anodized Type II bright dip black for corrosion protection and unrivaled aesthetics. We offer a complete line of hard to find fittings from OEM specific connections to AN adapters. All Aeromotive fittings and adapters are fully compatible with gasoline and alcohol based fuels.

Description

ORB-04 to 5/16' Barb Adapter Fitting

Specifications

Brand
Aeromotive
Manufacturer Part #
15628
UPC
684980002195

Frequently Asked Questions

Aeromotive AN-04 O-Ring Boss / 5/16in Hose Barb Adapter Fitting

$21.37