Aluminum Hardline And Tube Adapters

Aluminum hard line is light, clean and easy to bend, and this collection covers the Vibrant Performance adapters that tie it into AN plumbing: tube nuts and sleeves, AN tube adapters and brass olive inserts.

Flared connections

Flare the tube at 37 degrees, slide on the sleeve and nut, and it connects directly to any AN fitting. This is the cleanest, most reliable way to join hard line to AN.

Compression with olives

Brass olive inserts make a compression seal without flaring, useful in tight spots or when a flaring tool is not on hand.

Common questions

What size tube matches -6AN? 3/8 inch outside diameter tube. -8AN uses 1/2 inch.

Can I use aluminum hard line for brakes? No. Brakes need steel or stainless line.

Do I need a special flaring tool? Yes, a 37 degree AN flaring tool.

What's in This Collection

  • 20 products from Vibrant Performance, priced from $3.99 to $215.99
  • AN sizes: -3, -4, -6, -8, -10, -12, -16
  • Free shipping on orders over $150

How to Choose

Measure the outside diameter of the pipes you are joining and choose a coupler with a matching inside diameter. Straight couplers join two pipes in line, elbows turn the path, hump hoses absorb engine movement and reducers join two different sizes. Reinforced silicone holds its shape under boost and heat where rubber hose would balloon or crack.

More Questions

What clamps should I use with silicone couplers?

T-bolt clamps give the most even clamping force and are the best choice on boosted joints. Bead the pipe ends so the coupler cannot blow off.

Can silicone couplers be used on coolant lines?

Silicone works well with coolant, but check the inside diameter and temperature needs for your application.

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