2-1/4in Alum Air Cleaner Spacer

The 2-1/4in Alum Air Cleaner Spacer from Racing Power Co-Packaged is a precision-engineered intake manifold component designed to elevate your engine's air intake efficiency and carbureted performance. This aluminum spacer sits between your air filter assembly and carburetor, creating optimized airflow dynamics while providing critical thermal isolation. Whether you're running a street machine, bracket racer, or performance daily driver with a carburetor-fed engine, this spacer addresses a fundamental airflow bottleneck that many enthusiasts overlook during initial builds.

Manufactured from lightweight aluminum, the 2-1/4in bore diameter ensures compatibility with standard air cleaner assemblies while the spacer's 2.75-inch height creates additional plenum volume that smooths air velocity and reduces intake temperature. This design principle—often called "runner length tuning"—allows incoming charge air to stabilize before entering the carburetor, improving fuel atomization and combustion efficiency. The aluminum construction resists corrosion and won't absorb heat like plastic alternatives, keeping intake charges cooler and denser for better cylinder fill. At just 1.19 lbs, the spacer adds negligible weight while delivering measurable improvements in throttle response and midrange power.

This component benefits carbureted V8 and V6 engine builders, vintage hot rod enthusiasts, and anyone seeking bolt-on intake improvements without major manifold modifications. Installation is straightforward—simply position the spacer between your existing air cleaner base and carburetor flange using the original studs and fasteners, no drilling or fabrication required. The 7.8 x 2.75 x 8.8-inch profile fits under most stock and custom air cleaner lids, making it ideal for tight engine bays. Compatible with 2-1/4-inch intake ports and standard carburetor mounting patterns, this Racing Power Co-Packaged spacer delivers proven results for budget-conscious builders seeking reliable performance gains.