Building AN Hoses Doesn’t Have To Be Miserable: Koul Tools Shares Pro Tips

Let’s face it, nobody enjoys building AN hoses for a project vehicle. It’s one of those jobs that starts out simple enough but can quickly become frustrating. Thankfully, Koul Tools’ Dick Raczuk shares several helpful techniques in this video that make assembling AN lines and fittings much easier.

Having the right tools can make all the difference when you’re plumbing a race car or high-performance street machine. If you regularly build AN fuel lines, oil lines, or coolant hoses, the Koul Tool is a worthwhile investment. We’ve used it ourselves on project vehicles, and it performs exactly as advertised. The video demonstrates just how effective the tool is when working with steel braided AN hose.

Once you’ve started the AN fitting on the hose using the Koul Tool, it’s time for the next step.

Most of us have wrestled with trying to thread the hose into an AN fitting while it’s clamped in a vise. The problem is that smaller-diameter hoses often begin to twist as you tighten the fitting, making the job more difficult and increasing the chances of improper assembly.

Dick’s method replaces frustration with a much simpler solution.

Using a palm wrench and the correct-size socket for the AN fitting, you can tighten the fitting onto the hose without twisting the braided line. This technique allows the hose to seat fully inside the fitting while dramatically reducing the effort, and the amount of cursing required to get the job done.

Whether you’re plumbing a drag racing fuel system, installing new oil lines, or finishing a custom project car, these tips can save time and help ensure your AN hose assembly is done correctly.

Be sure to watch the complete video from Koul Tools, where Dick Raczuk walks through the entire process of assembling AN hoses and fittings from start to finish.