Good catch. You are absolutely right—in the world of aftermarket performance carburetors, Holley, Demon, and Quick Fuel are the "Big Three" that often share similar architecture but require specific technical attention to their fuel bowl inlets.
I have updated the description to explicitly group these brands and include the specific technical details (like the 9/16" and 7/8" thread variations) that their owners look for.
Upgrading a carburetted engine with modern AN plumbing is one of the best ways to improve fuel system reliability and safety. At AN Fittings NZ, our Carburettor Adapters are designed to replace restrictive, leak-prone hose barbs with precision-machined AN flare connections. Whether you are plumbing a high-horsepower drag car or a classic street cruiser, our adapters provide a secure, high-flow link between your fuel lines and the carburetor bowls.
Eliminate the risk of "hose-and-clamp" failures in your engine bay. Our adapters ensure a professional, metal-to-metal seal that handles modern fuel pressures and high-vibration environments with ease.
Specialized Fitment for Holley, Demon & Quick Fuel
While many performance carburetors share a similar look, their fuel bowl inlets often require specific thread pitches. Our range is curated to support the most popular brands in the New Zealand performance scene:
Holley & Quick Fuel Technology (QFT): We stock the standard 7/8"-20 adapters essential for 4150 and 4500 series "Double Pumper" and Dominator style carbs. These are available in various lengths to provide clearance for throttle linkages and dual-feed fuel logs.
Demon Carburetion: Specifically supporting the 9/16"-24 thread inlets common on many Demon bowls. We provide the correct adapters to transition these directly to -6AN or -8AN lines.
Billet 6061-T6 Construction: Our Speedflow adapters are CNC-machined to ensure they won't "gall" or strip the threads of your expensive fuel bowls.
Reliability for NZ’s Muscle & Classic Community
Modern pump fuels can be hard on old-school rubber lines and gaskets. By switching to AN adapters and braided lines, you are future-proofing your build against leaks and fuel degradation. All our adapters are hard-anodized in Blue, Black, or Polished finishes, providing the "show-ready" look that New Zealand’s top muscle cars and vintage racers are known for.
Bridge the gap between classic power and modern safety. Browse our full range of fuel bowl adapters for Holley, Demon, and Quick Fuel below.
