SPEEDFX Flare Fitting

SPEEDFX Flare Fittings: Precision-Built AN Connections for Performance Plumbing

When it comes to building or upgrading a high-performance fluid system — whether for fuel, oil, or coolant lines — the integrity of every connection point matters. SPEEDFX has established itself as a go-to source for dependable flare fittings that combine lightweight construction with a leak-proof seal, making them a trusted choice among performance builders, hot rodders, and weekend racers alike.

What Sets SPEEDFX Flare Fittings Apart

SPEEDFX flare fittings are built from 6061 aluminum, a alloy prized in performance applications for its excellent strength-to-weight ratio. Every fitting features a 37-degree sealing surface, the industry-standard JIC/AN flare angle that creates a reliable, leak-proof metal-to-metal connection without relying solely on thread sealants or gaskets. This geometry is critical in high-pressure or high-vibration environments where a compromised seal can mean the difference between a clean engine bay and a dangerous fluid leak.

Beyond raw material quality, SPEEDFX takes durability a step further with an anodized finish on each fitting. Anodizing electrochemically hardens the aluminum surface, creating a corrosion-resistant barrier that holds up against the heat cycles, moisture, and chemical exposure inherent in engine bay plumbing. The result is a fitting that looks sharp and lasts long — even in demanding underhood environments.

A Range Built for Real-World Builds

The SPEEDFX flare fitting lineup covers a wide spectrum of AN sizes, from compact -4AN connections suited for brake or nitrous lines all the way up to large-diameter -16AN fittings appropriate for high-flow oil or transmission cooler applications. Within this range, builders will find straight flare union couplers for joining two hose ends in line, as well as barb-to-flare adapters that bridge the gap between braided AN hose and rubber hose systems. This versatility makes SPEEDFX fittings particularly useful on builds that mix modern AN plumbing with factory rubber lines.

SPEEDFX fittings are also designed for broad compatibility — each fitting works with hose ends from most major manufacturers, so you are not locked into a single ecosystem when sourcing the rest of your plumbing hardware.

Where SPEEDFX Flare Fittings Are Used

• Performance fuel systems – clean, secure connections for braided fuel feed and return lines
• Engine oil systems – dry-sump, remote filter, and cooler plumbing
• Transmission and power steering coolers – larger AN sizes handle high-volume flow
• Brake and clutch hydraulics – the 37-degree flare angle meets DOT plumbing standards
• Turbo oil feed and drain lines – heat-resistant anodized finish stands up near the turbocharger

Whether you are routing a fresh fuel system on a classic muscle car or plumbing a turbocharged track build from scratch, SPEEDFX offers the flare fittings to do the job right — with the material quality and finish to keep everything sealed for the long haul.