WnSEu Braided AN6 Dual-Feed Carb Fuel Line for Holley 4150/Dominator (7/8"-20) Stainless Braid & Vacuum Port

WnSEu Braided AN6 Dual Feed Carb Fuel Line is a stainless-steel–braided dual-feed hose assembly engineered to deliver reliable fuel supply and vacuum monitoring for Holley 4150/Dominator carburetors.

This braided AN6 dual-feed carb fuel line is built to replace or upgrade the dual inlet plumbing for Holley 4150 Series/Dominator carburetors. It combines stainless-steel braid, rubber and nylon layers with machined aluminum fittings and an integrated vacuum/pressure gauge feed to minimize leaks, resist abrasion, and bring a finished look under the hood. The assembly fits the 7/8"-20 thread commonly used on Holley Dominator 4150-style carbs and includes an extra connector for flexible routing and easier installation.

How does this braided dual-feed line improve fuel delivery for a Holley 4150?

The dual-feed design supplies fuel to both sides of a Holley 4150 carburetor, supporting even flow and reducing the risk of starvation under load. The AN6 fittings provide a secure seal and the stainless braid resists chafing and heat, preserving hose integrity over time.

• Dual-feed layout ensures balanced inlet pressure to both fuel bowls
• AN6 aluminum fittings match common performance carb plumbing
• Stainless-steel braid protects against abrasion and heat exposure
• Integrated vacuum port enables monitoring without extra adapters

Will this assembly fit my Holley Dominator 4150 with 7/8"-20 threads?

Yes—the fittings are sized for Holley Dominator/4150 Series carbs using the 7/8"-20 thread standard. The kit includes a supplemental connector so you can adapt orientation or extend reach for neat routing around manifolds and brackets.

• Pre-machined 7/8"-20 female/male fitment for direct carb attachment
• Extra connector for flexible hose positioning and easier installation
• Compact profile works with tight engine-bay layouts

What materials and construction features keep this line leak-resistant and durable?

The hose uses a multi-layer construction—rubber inner liner, nylon reinforcement, and a stainless-steel outer braid—that resists fuel permeation, kinking, and external damage. Fittings are high-grade aluminum to provide corrosion resistance and consistent thread sealing.

• Stainless-steel braid for mechanical protection and heat resistance
• Rubber and nylon inner layers for pressure tolerance and flexibility
• Aluminum alloy fittings reduce corrosion and maintain a secure seal
• Decorative blue-dot finish for visible routing and cleaner appearance

Who is this for: This braided AN6 dual-feed fuel line is intended for classic- and performance-car owners, engine builders, and DIY mechanics upgrading fuel plumbing on Holley 4150/Dominator carburetors. Choose it if you want improved durability, leak-resistant connections, tidy under-hood presentation, and an easy way to add a vacuum/pressure gauge without extra adapters. It’s suited for street, strip, and show vehicles where reliable dual-feed delivery and professional fitment matter.