RYANSTAR RACING AN6 Dual Feed Fuel Line Kit for Holley 4150 — Aluminum fittings, braided hose

RYANSTAR RACING AN6 Dual Feed Fuel Line Kit is a dual-feed aluminum fuel line assembly designed to deliver steady, reliable fuel to any 4150-pattern carburetor, including Holley 4150.

This AN6 dual feed kit provides a direct replacement for single or worn factory lines and is engineered to support consistent fuel flow to both front and rear bowls of 4150-style carburetors. Built from lightweight, high-density aluminum fittings and braided stainless nylon hose, the kit is intended for enthusiasts and mechanics who want durable, serviceable fuel plumbing that resists abrasion, heat, and vibration.

How does this kit improve fuel delivery for a Holley 4150?

The dual-feed layout supplies balanced fuel to front and rear carburetor bowls, reducing the risk of starvation under hard acceleration or high-RPM conditions. Precision AN6 fittings and a smooth internal bore keep flow consistent while minimizing turbulence.

• Balanced front and rear bowl supply reduces lean conditions on wide-open throttle.
• AN6 fittings sized for high-flow applications minimize pressure drop.
• Braided hose resists kinking and maintains steady flow under vibration.

What materials and construction ensure long-term reliability?

The kit uses high-density aluminum for the hard lines and terminals with stainless-steel braided nylon hose for flexible sections. These materials are chosen to withstand heat, abrasion, and corrosive environments commonly found in engine bays.

• Lightweight aluminum fittings reduce weight and resist corrosion.
• Stainless-braided nylon hose provides heat and wear resistance.
• Precision-machined threads and seals lower the chance of leaks.

Is installation straightforward for a home mechanic?

Yes — the kit is designed to fit any 4150-pattern carburetor and includes standard AN6 connections common in performance fuel systems. Basic tools and a few hours are typically sufficient for installation on most street and race vehicles.

• Direct-fit compatibility with Holley 4150 and similar 4150-base carburetors.
• AN6 fittings use common wrench sizes and are serviceable in-line.
• Flexible hose sections simplify routing in tight engine bays.

What should I expect in terms of maintenance and service life?

With correct installation and periodic inspection, the components are built to last longer than standard rubber lines. Visual checks of fittings and hose braid for chafing, tightness, and fluid seepage will prevent most issues before they affect performance.

• Inspect hose braid and fittings every few thousand miles or after track use.
• Replace any hose showing fray, swelling, or hardening to maintain safety.
• Tighten fittings to specified torque and use replacement seals as needed.

Who is this for? This AN6 dual feed fuel line kit from RYANSTAR RACING is aimed at performance enthusiasts, street-rod builders, and racers who run Holley 4150 or other 4150-pattern carburetors and want a durable, high-flow fuel delivery upgrade. It's appropriate for both restoration projects needing an OEM-style fitment and modern performance builds seeking improved reliability under spirited driving or competition. If you value precise fuel delivery, corrosion-resistant materials, and a professional appearance in your engine bay, this kit offers a straightforward, long-lasting solution.