Billet Fuel Tank Adapter Fitting — 7mm to AN Upgrade | VW Beetle & Bus

Billet Fuel Tank Adapter Fitting

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.

Engineering & Material Specs

• 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

Choose the sizing that matches your fuel system requirements:

• 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.

Vehicle Fitment

• Beetle & Super Beetle

• Karmann Ghia

• Type 3 (Notchback, Squareback, Fastback)

• The Thing (Type 181)

What’s Included

• (1) Billet Aluminum Fuel Tank Adapter

• (1) Teflon Sealing Washer