344-03 -3 male to M10 X 1.0 male dual

Speedflow SF344-03 | -3 AN Male to M10 x 1.0 Male Dual Adapter

The Speedflow SF344-03 is a precision-machined -3 AN male to M10 x 1.0 male dual (metric inverted flare) adapter, designed to connect -3 AN braided line systems to components with an M10 x 1.0 metric dual flare port. This adapter is an essential fitting for builders converting Japanese and European OEM brake systems — where M10 x 1.0 metric ports are the dominant standard — to AN-style braided brake lines.

Product Specifications

• Part Number: SF344-03
• AN End: -3 AN male
• Metric End: M10 x 1.0 male dual (metric inverted flare)
• Series: Speedflow 344 — AN to Metric Dual Flare Adapters
• Compatible With: Standard -3 AN hose ends and M10 x 1.0 metric dual flare ports
• Barcode: 9342122002663

Applications

The SF344-03 is a key adapter for metric brake system AN conversions and custom line fabrication, including:

• Connecting -3 AN braided brake lines to Japanese and European OEM master cylinders with M10 x 1.0 ports
• Brake caliper and proportioning valve connections on metric brake systems
• Japanese import, European, and modern Australian vehicle brake line AN conversion builds
• Motorsport and track-day builds converting OEM metric brake lines to AN braided
• Any application bridging -3 AN braided lines to M10 x 1.0 metric dual flare brake components

M10 x 1.0 Metric Dual Flare — The Japanese & European Standard

While American and older Australian vehicles predominantly use imperial inverted flare threads (3/8"-24, 7/16"-24, 9/16"-18), Japanese and European OEM brake systems use metric dual flare threads — with M10 x 1.0 being the most common. The SF344-03 bridges the gap between the AN aftermarket and this metric standard, making it an indispensable adapter for anyone building AN brake lines on a Japanese import, modern European, or metric-spec Australian vehicle.

For imperial inverted flare adapters, see our SF340-03 (-3 AN to 3/8"-24), SF341-04 (-4 AN to 7/16"-24), SF342-03-03 (-3 AN to 1/2"), and SF343-03-03 (-3 AN to 9/16"-18) listings. Sold individually.