411-04-05-BLK -4 female to 5/16 hose tail

Speedflow SF411-04-05-BLK | -4 AN Female to 5/16" Hose Tail | Black

The Speedflow SF411-04-05-BLK is a precision-machined -4 AN female to 5/16" hose tail adapter in black anodised finish, designed to connect -4 AN female fittings to standard 5/16" (8mm) rubber or silicone hose in performance fuel, coolant, vacuum, and hydraulic line builds. This adapter bridges the gap between the AN braided line world and conventional push-on hose, making it an essential fitting for hybrid plumbing systems where both hose types are used.

Product Specifications

• Part Number: SF411-04-05-BLK
• AN End: -4 AN female
• Hose Tail: 5/16" (approx. 8mm) barb
• Finish: Black anodised
• Series: Speedflow 411 — AN Female to Hose Tail Adapters
• Compatible With: Standard -4 AN male fittings and 5/16" ID rubber or silicone hose

Applications

The SF411-04-05-BLK is a versatile adapter suited to a wide range of performance and custom plumbing builds, including:

• Fuel line connections between AN fittings and 5/16" rubber or silicone fuel hose
• Coolant line connections in custom cooling system builds
• Vacuum and breather line connections to AN-ported components
• Oil breather and catch can line connections
• Any application requiring a -4 AN female to 5/16" push-on hose interface

AN to Hose Tail — Bridging Two Hose Standards

Performance builds often combine AN braided lines with conventional rubber or silicone hose — particularly in fuel, coolant, and breather systems where flexibility and cost efficiency matter. The SF411-04-05-BLK provides a clean, secure transition between these two standards, with the -4 AN female end connecting to any standard -4 AN male fitting and the 5/16" barbed hose tail gripping securely to push-on hose. The black anodised finish delivers a premium aesthetic consistent with a quality build.

Sold individually. Secure hose tail connections with an appropriate hose clamp for pressurised applications. Compatible with standard -4 AN male fittings and 5/16" ID hose.