Air Cleaner Adapter 3-1 /16In Neck

The Racing Power Co-Packaged Air Cleaner Adapter 3-1/16 In Neck (Part Number R2177) is a precision-engineered intake transition component designed to bridge the gap between a 5-1/8-inch air cleaner housing and a 3-1/16-inch carburetor flange. This 1-inch tall black plastic adapter enables proper air distribution while maintaining optimal flow characteristics in carbureted engine configurations. The stepped design ensures a secure fit without airflow restriction, making it essential for custom carburetor installations, engine swaps, and performance intake modifications where standard factory manifolding won't accommodate aftermarket air cleaner assemblies.

The adapter's plastic construction provides vibration isolation between the air cleaner and carburetor flange, reducing transmission of intake noise and resonance into the engine bay. Its lightweight design (0.18 lbs) contributes minimally to overall engine weight while the compact 1-inch height prevents excessive hood clearance issues on vehicles with space constraints. The 3-1/16-inch flange diameter is a standard bore size common to Holley, Edelbrock, and other popular four-barrel carburetors, while the 5-1/8-inch top opening accommodates modern round air filter canisters with integral filtration media. Black finish resists fading and blends seamlessly with modern engine compartment aesthetics.

This adapter is ideal for street rod builders, classic car restorers, and engine builders transitioning between period-correct air filtration systems and contemporary high-flow intake designs. It solves the common fitment challenge when upgrading to larger diameter air cleaner housings without replacing the carburetor or its mounting flange. Automotive technicians and fabricators rely on this part to complete intake systems on modified small-block and big-block V8 engines where factory air box dimensions no longer apply.