Big End Performance AN Fitting

Big End Performance AN Fittings: Precision-Built Connections for Performance Plumbing

When routing fuel, oil, or coolant lines on a high-performance build, the fittings holding everything together matter just as much as the hose itself. Big End Performance has carved out a reputation in the performance aftermarket for offering a broad selection of quality AN fittings that balance precision engineering with accessible value — making them a go-to choice for racers and builders who demand reliability without overspending.

Billet Aluminum Construction and Leak-Free Design

At the core of Big End Performance's AN fitting lineup is a commitment to solid materials and sound engineering. Their fittings are constructed from lightweight 6061 alloy aluminum and designed for smooth flow, easy assembly, and longer life. Elbow ends are built from one-piece billet tube construction , eliminating weak points common in multi-piece designs. The 37-degree AN flare assures a leak-proof seal , and a Viton O-ring seal allows 360-degree rotation on swivel-style hose ends — a critical feature when routing lines in tight engine bays.

A Versatile Lineup: Hose Ends, Adapters, and Hard Tube Connections

Big End Performance's AN fitting catalog covers a wide range of connection needs. Their swivel hose ends come in multiple angles — including 45-degree and 90-degree configurations — and are available in classic red/blue anodized and black anodized finishes to suit different build aesthetics. Products are sold individually , allowing builders to mix and match exactly what each line run requires.

For builders who prefer hard-line routing, Big End also offers compression-style tube adapters. These hard tube adapters are designed to connect aluminum tubing to AN hose fittings, featuring a brass ferrule to crimp the tubing between the adapter tubing nut and AN adapter fitting — eliminating the need to flare the tube and simplifying installation. Their fittings are compatible with most AN adapter fittings on the market , so they integrate seamlessly into existing plumbing setups regardless of brand.

Y-Fittings and Specialty Adapters

Beyond standard hose ends, Big End Performance rounds out their AN fitting selection with specialty pieces like male Y-fittings, which allow a single line to split cleanly into two — useful for oil cooler, fuel return, or coolant distribution applications. This variety makes it possible to source most of a plumbing job's hardware from a single trusted brand.

Made in the USA, Built for Performance

Many of Big End's products are made right here in the USA by top manufacturers well known in the performance industry. Big End Performance Products offer a constantly growing and diverse assortment of quality hi-performance products that cater to all levels of interest. Whether you're plumbing a dedicated race car or upgrading a street/strip build, their AN fittings deliver the confidence that comes from race-proven hardware.

Browse the full selection of AN fittings available here, or visit the complete Big End Performance brand page to explore their entire catalog of performance parts.