What Are AN Fittings and AN Hoses?

2025-06-04

🔧 What Are AN Fittings and AN Hoses? A Complete Guide for Car Enthusiasts AN fittings and AN hoses are essential components in motorsport and vehicle modification. They are used to create reliable and flexible connections for fuel, oil, water, and air across various vehicle systems. This guide explains what AN fittings and hoses are, their functions, and how they are used.

🛠️ What Does "AN" Mean? "AN" stands for "Army-Navy" and is an American standard developed during World War II. AN fittings use a 37-degree conical seal, which provides a secure and leak-free connection without the need for additional gaskets. This standard has become popular in the automotive and motorsport industries due to its reliability and simplicity.

🔩 AN Hoses and Their Uses AN hoses are designed to be used with AN fittings and come in various materials and sizes depending on the application: • Rubber hoses: Used for oil, water, and air. • PTFE hoses: Handle aggressive fluids such as gasoline, ethanol, and methanol. • Push-On hoses: Easier to install without hose clamps. These hoses can be mounted easily without special tools, making them ideal for both professionals and DIY builders.

🔧 AN Fittings and Adapters AN fittings come in various designs to suit different needs: • Straight, 45°, 90°, and 180°: For different installation angles. • Adapters: Connect AN hoses to components with other thread types, such as NPT or metric. • Weld-on fittings: For creating permanent connections on non-threaded parts. These fittings and adapters allow you to build flexible and customizable systems for transporting fluids and gases in the vehicle.

🧰 Installation Tips When installing AN fittings and hoses, consider the following: • Correct sizing: Choose the right AN size based on flow requirements and hose ID. • Proper torque: Use recommended torque specs to avoid leaks or damage. • Compatible materials: Ensure the hose material matches the fluid or gas in use. Following these guidelines ensures a safe and efficient AN system installation in your vehicle.

🛒 Explore Our Selection At SC Styling, we offer a wide range of AN fittings, hoses, and accessories for various applications. Whether you're rebuilding the fuel system, installing an oil cooler, or upgrading your turbo system, we have the parts you need.

Author Johan Karapetyan is Product Manager at SC Styling with over 14 years of experience in product range, sourcing, and technical advice. As a trained automotive technician, he has helped thousands of customers find the right styling and aftermarket solutions.