Washburn's Metal billet fuel tank adapter fitting, 7mm outlet to -6 or -8 AN, VW Beetle, Ghia, Type 3 and Bus
6061-T6 billet fuel tank adapter, 7mm outlet to -6 or -8 AN, for VW Bus, Beetle, Karmann Ghia and Type 3
Washburn's Metal billet fuel tank adapter fitting, 7mm outlet to -6 or -8 AN, VW Beetle, Ghia, Type 3 and Bus
6061-T6 billet fuel tank adapter, 7mm outlet to -6 or -8 AN, for VW Bus, Beetle, Karmann Ghia and Type 3
Washburn's Metal

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

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Billet Fuel Tank Adapter Fitting — 7mm Factory Outlet to -8 AN

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-horsepower, turbocharged, or EFI builds.

This -8 AN Fuel Tank Adapter is the largest outlet we offer, built for serious power. CNC-machined from billet aluminum, it threads straight into the factory M18x1.5 tank outlet and opens the door to maximum fuel delivery with 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

  • Maximum Flow: The -8 AN passage is the right call for high-horsepower turbo, supercharged, EFI, and dedicated racing applications where a -6 line becomes the bottleneck.
  • Precision Machined: CNC-cut from 6061-T6 billet aluminum and finished in a durable black anodizing for lifetime corrosion resistance.
  • Leak-Free Seal: Includes a premium white Teflon sealing washer for a rock-solid, fuel-safe seal against the tank.
  • Direct Fitment: Threads directly into the factory VW fuel tank outlet (M18x1.5) — no drilling or tapping.

Technical Specifications

  • Material: 6061-T6 billet aluminum.
  • Finish: Durable black anodizing.
  • Thread: M18x1.5 (factory VW tank outlet).
  • Outlet: -8 AN male.
  • 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? Choose -8 AN for high-horsepower turbo, EFI, or racing builds. For most street and dual-carburetor setups, the -6 AN version is the better match.
  • Is a sealing washer included? Yes — each adapter ships with a Teflon sealing washer for a leak-free fit.

Street Build Instead?

This adapter is also available in -6 AN — the industry standard for high-performance street and dual-carburetor setups.

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