1.00in Tappered LW Carb Spacer 4500 2.550 Bore

The 1.00in Tappered LW Carb Spacer 4500 2.550 Bore from WILSON MANIFOLDS is a precision carburetor spacer engineered for serious carb tuners and high-performance engine builders. This lightweight aluminum spacer sits between your intake manifold and carburetor, creating critical plenum volume and thermal separation that improves fuel atomization and engine response. Whether you're chasing peak horsepower on the dyno or fine-tuning a street performance engine, a quality carb spacer is an often-overlooked foundation for consistent jetting and air-fuel distribution.

Machined from lightweight aluminum and black anodized for durability, this 1-inch thick spacer features a tapered bore design calibrated to 2.550 inches and four-hole dominator bolt pattern compatibility. The tapered design reduces turbulence and promotes uniform velocity through the carburetor transition, while the 1-inch thickness provides substantial plenum volume without excessive intake temperature loss. Black anodized finish resists corrosion and maintains a clean, professional appearance under the hood while the compact 7.3 x 1.15 x 8-inch footprint integrates seamlessly into tight engine bays. At just 1.2 pounds, this spacer adds negligible weight while delivering measurable improvements in throttle response and carburetor efficiency.

This spacer is ideal for enthusiasts running Dominator-pattern four-barrel carburetors on big-block and small-block builds, from street engines to competition platforms. The 2.550-inch bore accommodates a wide range of carb combinations and manifold configurations, making it a versatile choice for carburetor jetting optimization. Installation is straightforward—simply sandwich the spacer between your manifold and carb, ensuring proper gasket sealing to prevent vacuum leaks. Pair this with quality gaskets and a metering rod tune-up for complete intake system optimization.