Air Hose Fittings

AN fittings are a simple and effective way to plumb fluid systems in your car. This AN fittings install guide answers some of the more common questions pertaining to AN fittings and AN line.

Read this guide on how to create a custom crankcase vent system for a Corvette using a Sure Seal air cleaner assembly kit. Learn how to keep pressure to a minimum and fabricate tubing to ensure a proper fit.

Learn how to use Koul Tools for your AN Hose Assembly with our video guide. Koul Tools make it easy to install a braided rubber hose into the AN fitting socket.

Hose & Fitting

Keep your rear cylinders running cool in a high performance engine by installing a water bypass kit to the intake manifold.

This handy adapter is an inexpensive way to adapt an LS into your classic, muscle car, or truck. It takes care of the steam line as well as the hose diameter difference, allowing you to run a standard radiator with your LS swap.

Learn about the installation process for a Vintage Air SureFit Air Condtioning Kit. Alanna C. walks you through as she installs the A/C kit in her 65 Mustang.

Learn how to repair an oil line leak using steel braided hose and AN fittings. See how to cut the hose, measure angles, apply fittings and install fuel lines back into your car.

How to install a chrome radiator hose kit and aluminum thermostat housing on a big block Chevy for an added touch to your engine bay.

Dick from Koul Tools shares a tip on how to properly seat the AN fittings using the Koul Tools device.