AN Male to EFI Female Fuel Hardline Adapters

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£16.53

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Male AN to Fuel Hardline Quick-Connect Adapters

Connect aftermarket AN fuel lines to compatible factory-style fuel hardline connections with our aluminium quick-connect adapters. Designed with a male AN/JIC connection and a female SAE quick-connect interface, they provide a compact and convenient transition between AN plumbing and existing vehicle fuel connections.

Connect AN Plumbing to Factory Fuel Hardlines

The female quick-connect end attaches directly to a compatible male fuel hardline connection, making these adapters ideal when integrating aftermarket AN hoses, fuel rails, regulators and other components with existing vehicle fuel lines.

SAE Quick-Connect Interface

The hardline side uses a female SAE-style quick-connect interface designed to locate over the corresponding male fuel connection and secure behind its retaining bead. This allows compatible factory connections to be retained without cutting or flaring the hardline.

Male JIC 37° Connection

The opposite end features a male AN/JIC connection with a 37° cone flare, providing a direct connection to compatible female AN/JIC hose ends and fittings.

Ideal for Fuel System Conversions

A practical solution for engine conversions, fuel system upgrades and custom installations where aftermarket AN plumbing needs to interface with an existing fuel hardline, fuel rail or other compatible quick-connect connection.

Multiple Connection Sizes

Available with AN6 and AN8 male connections and 5/16" or 3/8" SAE quick-connect sizes, providing options for a range of automotive fuel system installations.

Lightweight Aluminium Construction

Precision-machined from 6061-T6 aluminium with a black anodised finish, these adapters provide a lightweight, durable and corrosion-resistant solution for custom automotive fuel systems.

Adapter Type: Male AN to EFI Fuel Hardline Adapter For adapting a compatible male EFI hardline connector to AN/JIC
Material: 6061-T6 Aluminium Lightweight, high-strength alloy
Finish: Black Anodised Protects against wear and corrosion

Hose Connection: Male AN For connection to a female AN hose fitting
Flare Type: JIC 37° Male cone flare
Hardline Connection: SAE Female Connection For connection to a compatible male EFI hardline connector
Reusable: Yes Reuse only if the adapter and internal seals are free from damage

Available male AN to EFI fuel hardline adapter sizes
Product Code	Male AN Thread	Fuel Hardline Size
CPL-HRD-AL-AN6-516	9/16"-18 UNF AN6	5/16"
CPL-HRD-AL-AN6-38	9/16"-18 UNF AN6	3/8"
CPL-HRD-AL-AN8-516	3/4"-16 UNF AN8	5/16"
CPL-HRD-AL-AN8-38	3/4"-16 UNF AN8	3/8"

5/16" and 3/8" refer to the fuel hardline connection size. A compatible male EFI hardline connector is required; these adapters will not fit plain hardline.

EFI Fuel Systems
OEM Fuel Hardlines
Fuel Rails
Fuel System Conversions
Engine Swaps

Free repair or replacement for two years from the date of purchase. Learn more

Frequently Asked Questions

What are AN to fuel hardline quick-connect adapters used for?
These adapters provide a transition between an aftermarket AN/JIC fuel system and a compatible factory-style fuel hardline connection. The male AN end connects to a female AN/JIC fitting, while the female SAE quick-connect end attaches to the corresponding male fuel connection.
What is an SAE fuel quick-connect?
An SAE quick-connect is a connection commonly used on automotive fuel systems. The female connection fits over a compatible male tube or fitting with a formed retaining feature, allowing the connection to be sealed and mechanically secured without flaring the hardline.
What sizes are available?
These adapters are available with AN6 or AN8 male connections and 5/16" or 3/8" SAE female quick-connect connections. Select the adapter to match both the AN fitting and the quick-connect size on the vehicle.
Will these fit ordinary 5/16" or 3/8" hardline?
No. The 5/16" and 3/8" sizes refer to the SAE quick-connect interface. The mating hardline or fitting must have the corresponding male quick-connect profile and retaining feature; these adapters are not designed to attach directly to plain cut tubing.
Do I need to cut or flare the original fuel hardline?
No. When used with a compatible male quick-connect connection, the adapter attaches to the existing connection without cutting or flaring the hardline.
Do these adapters connect directly to braided fuel hose?
Not directly. The adapter has a male JIC 37° connection designed for a compatible female AN/JIC hose end or fitting, which can then form part of an AN braided fuel hose system.
What are the adapters made from?
The adapters are CNC-machined from 6061-T6 aluminium and finished with a black anodised coating for a lightweight, durable and corrosion-resistant construction.
Are the adapters reusable?
Yes, provided the adapter, internal seal and retaining components remain free from damage and in serviceable condition. Inspect the connection and sealing components before reassembly.