347-03 -3 male to 3/8"-24 male dual

Speedflow SF347-03 | -3 AN Male to 3/8"-24 Male Dual Flare Adapter

The Speedflow SF347-03 is a precision-machined -3 AN male to 3/8"-24 male dual flare adapter, designed to connect -3 AN braided line systems to components with a 3/8"-24 double flare port. While similar in thread size to the inverted flare SF340-03, the dual flare variant is specifically suited to components using a double flare seat geometry — making it critical to select the correct fitting for your specific application.

Product Specifications

• Part Number: SF347-03
• AN End: -3 AN male
• Dual Flare End: 3/8"-24 male dual flare
• Series: Speedflow 347 — AN to Dual Flare Adapters
• Compatible With: Standard -3 AN hose ends and 3/8"-24 dual flare ports
• Barcode: 9342122002694

Applications

The SF347-03 is suited to a range of performance and custom brake system builds, including:

• Connecting -3 AN braided brake lines to master cylinders and calipers with 3/8"-24 dual flare ports
• Brake proportioning and bias valve connections on dual flare brake systems
• Hot rod, muscle car, and classic vehicle brake line upgrades from steel tube to AN braided
• Custom brake line fabrication requiring a 3/8"-24 dual flare interface
• Any application bridging -3 AN braided lines to 3/8"-24 double flare brake components

Dual Flare vs Inverted Flare — Know the Difference

The dual flare (also known as a double flare) and the inverted flare share the same thread size in many cases but use different seat geometries and are not interchangeable. A dual flare fitting seats against a folded-over tube end, while an inverted flare seats against a cone-shaped flare. Always verify which flare type your component uses before ordering. For 3/8"-24 inverted flare applications, see our SF340-03 listing.

For other dual flare sizes, see our SF341-04, SF342-03-03, SF343-03-03, and SF344-03 listings. Sold individually.