1/2in Billet Carb Spacer

The MOROSO 1/2in Billet Carb Spacer is a precision aluminum spacer designed to optimize carburetor mounting and fuel delivery on performance engines. This open square bore spacer sits between the carburetor and intake manifold, delivering improved air distribution and thermal isolation that directly impacts throttle response and combustion efficiency. At half-inch thickness, this billet carburetor spacer offers the ideal balance between insulation properties and intake manifold compatibility.

Machined from aluminum and finished in natural (uncoated) form, the MOROSO carburetor spacer weighs just 0.9 lbs, minimizing parasitic weight while providing durability. The open design allows full flow passage without restriction, while the billet construction ensures precise bore alignment with your square bore carburetor. This thick spacer is particularly effective at reducing heat transfer from the engine's exhaust heat to the fuel bowl, lowering fuel temperature and reducing vapor lock risk during sustained wide-open throttle conditions—a critical advantage for street performance and racing applications.

Enthusiasts building carbureted street engines, restorations, and classic muscle car projects rely on quality carburetor spacers to ensure repeatable tuning and reliable fuel delivery across varying ambient temperatures. The 1/2in thickness provides moderate thermal break effect without requiring complex gasket stacking. Installation is straightforward—simply position between the carburetor and manifold using existing fastener holes. Compatible with square bore carburetors on small-block and big-block engines commonly found in hot rods, street machines, and vintage American performance cars.