Billet Fuel Tank Adapter Fitting
Billet Fuel Tank Adapter Fitting
Billet Fuel Tank Adapter Fitting
Billet Fuel Tank Adapter Fitting
Washburn's Metal

Billet Fuel Tank Adapter Fitting | VW Beetle, Ghia, Type 3 & Bus | 7mm Outlet to -6/-8 AN, 6061-T6

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Product details
  • Vendor Washburn's Metal
  • Fits
    • All Years|VW|Beetle
    • All Years|VW|Super Beetle
    • All Years|VW|Karmann Ghia
    • All Years|VW|Type 3
    • All Years|VW|Thing
    • All Years|VW|Bus

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Billet Fuel Tank Adapter Fitting — 7mm Factory Outlet to AN Upgrade

Don't let your fuel system be choked by the factory outlet. The restrictive 7mm hose barb found on stock VW fuel tanks was designed for a 40hp engine — it simply cannot provide the volume needed for high-performance, large-displacement, or turbocharged builds.

The Fuel Tank Adapter is the professional way to convert your stock tank to a high-flow AN-style connection. CNC-machined from billet aluminum, this fitting allows for maximum fuel delivery while giving your chassis a clean, race-ready finish.

Vehicle Fitment

  • Beetle & Super Beetle
  • Karmann Ghia
  • Type 3 (Notchback, Squareback, Fastback)
  • The Thing (Type 181)
  • Bus / Transporter

Key Features & Benefits

  • High-Flow Design: Replaces the tiny factory barb with a smooth-bore AN passage, eliminating fuel starvation at high RPM.
  • Precision Machined: CNC-cut from 6061-T6 billet aluminum and finished in a durable black anodizing for lifetime corrosion resistance.
  • Leak-Free Seal: Each fitting includes a premium white Teflon sealing washer to ensure a rock-solid, fuel-safe seal against the tank.
  • Direct Fitment: Threads directly into the factory VW fuel tank outlet (M18x1.5).

Available Versions

  • M18 to -6 AN: The industry standard for most high-performance street and dual-carburetor setups.
  • M18 to -8 AN: The ultimate choice for high-horsepower turbocharged, EFI, or dedicated racing applications.

Technical Specifications

  • Material: 6061-T6 billet aluminum.
  • Finish: Durable black anodizing.
  • Thread: M18x1.5 (factory VW tank outlet).
  • Sizes: -6 AN or -8 AN outlet.
  • Included: (1) billet aluminum adapter, (1) Teflon sealing washer.

Frequently Asked Questions

  • What thread does this use? M18x1.5, matching the factory VW fuel tank outlet — no drilling or tapping required.
  • Do I need -6 or -8 AN? -6 AN suits most street and dual-carb setups; -8 AN suits high-horsepower turbo, EFI, or racing builds.
  • Is a sealing washer included? Yes — each adapter ships with a Teflon sealing washer for a leak-free fit.

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