Single 40 IDF Carburetor Kit, By Weber

OVERVIEW

When it comes to unlocking the hidden potential of your air-cooled flat-four, few upgrades offer the immediate gratification and reliability of the Weber Single 40 IDF Carburetor Kit. For decades, the Weber name has been synonymous with racing pedigree and precision engineering, and this kit brings that legendary Italian-designed performance directly to your Volkswagen engine. Unlike the standard factory carburetors that often struggle with modern fuel blends and lack the throatier response desired by enthusiasts, the 40mm IDF provides a significant increase in airflow and fuel atomization. This results in a much smoother power band, improved mid-range torque, and that unmistakable Weber induction growl that lets everyone know your Beetle or Ghia means business. Whether you are building a spirited daily driver or a weekend cruiser, this single-carb setup offers a perfect balance of simplicity and performance without the synchronization headaches often associated with dual-carburetor configurations.

This comprehensive kit, part number K1315, is meticulously curated to ensure you have everything needed for a professional-grade installation right out of the box. While the heart of the kit is a genuine 40mm Weber IDF carburetor, the supporting hardware is provided by EMPI, the industry leader in air-cooled accessories. The kit includes a high-flow aluminum center-mount intake manifold, a chrome air cleaner with a high-performance gauze element, and all the necessary gaskets, hardware, and fuel lines to complete the job. It even features a robust linkage system designed to provide crisp, predictable throttle response. Because this kit is designed for "off-road ready" durability, it is a favorite among Baja Bug and rail buggy owners who demand a carburetor that won''t stumble when the terrain gets rough. By choosing the genuine Weber carb over cheaper imitations, you are investing in a component that is fully tunable and built to last as long as the car itself.

VEHICLE FITMENT

• Volkswagen Type 1 Beetle / Bug: 1954-1977 (Dual Port Engines)
• Volkswagen Type 1 Karmann Ghia: 1956-1974 (Dual Port Engines)
• Volkswagen Type 2 Bus / Transporter: 1954-1971 (Upright 1600cc Engines)
• Volkswagen Type 181 Thing: 1973-1974
• Custom Applications: Ideal for Sand Rails, Dune Buggies, and Baja Bugs utilizing a Type 1 dual-port engine case.

TECHNICAL SPECIFICATIONS

• Carburetor Model: Genuine Weber 40 IDF
• Carburetor Size: 40mm Throttle Bores
• Manifold Style: Single Center-Mount (Isolated Runner Design)
• Manifold Material: High-Grade Cast