Holley
Adapter Fitting #8 x 9/16-24 Holley Blk - 491966BL
Adapter Fitting #8 x 9/16-24 Holley Blk - 491966BL
Regular price
$31.99 USD
Regular price
Sale price
$31.99 USD
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- Ships direct from the brand or supplier
- Tracking emailed when it ships
- Free fitment check before you order
Enhance your automotive performance with the FRAGOLA Adapter Fitting #8 x 9/16-24 Holley in sleek black. This high-quality fitting is designed to ensure secure connections in your fuel system, providing reliability and peace of mind on the road.
- Precision Engineering: Crafted for a perfect fit, reducing the risk of leaks and ensuring optimal flow.
- Sleek Design: The black finish not only looks great but also resists corrosion, maintaining its appearance over time.
- Versatile Application: Ideal for Holley setups, this fitting accommodates a variety of hoses and valves for complete customization.
- Lightweight Construction: Weighing just 0.050 lbs, it adds minimal weight to your setup while maximizing performance.
Compatible with #8 hose sizes and 9/16-24 threads, this adapter fitting provides the perfect solution for your high-performance needs. Upgrade your fuel system today with FRAGOLA's trusted quality.

Holley fitting or hardware: what to know
Thread type and size must match on both sides; AN, NPT and metric threads do not mix.
Fitment notes
- Engine: match the engine size and code to your vehicle; the same model often came with several engines.
- Specs, lead time and warranty come from Holley and can change. The details above this guide are the latest we have.
Not sure it fits? Message us your vehicle details and we'll double-check fitment before you buy.
Ask about fitmentWhat else to plan for
- Hose. Match hose size to the fitting.
More for your car: Fuel & air intake
Questions about fitting or hardware
Will this fit my car?
Check the title and details above for the vehicles and part number it is listed for. If you are not sure, contact us with your year, make, model, engine and trim and we will confirm fitment before you order.
Does it need thread sealant?
NPT threads do; AN and flare fittings seal on the flare and should go on dry.
Where do specs and warranty details come from?
From Holley. Each brand sets its own specs, lead times and warranty terms, and they can change. The product details above are the latest we have.