Air Cleaner Spacer 3/4in

The Holley Air Cleaner Spacer 3/4in is a precision intake manifold component designed for carbureted engine builders and performance enthusiasts who demand proper air velocity and fuel atomization. This 0.75-inch spacer sits between your carburetor and air cleaner housing, creating critical clearance that optimizes cold air flow while maintaining carburetor-to-manifold alignment. It's an essential part for anyone upgrading to larger diameter air cleaners, installing performance intakes, or fine-tuning fuel delivery on classic and modern muscle cars.

Manufactured from durable black plastic, this spacer features a 5-1/8-inch carb flange that matches standard Holley carburetor mounting patterns and bolt-hole spacing. The rigid construction prevents flexing under engine vibration, which would otherwise cause carburetor rocking and inconsistent jetting. The 3/4-inch thickness is engineered to provide adequate separation for high-flow air filter elements while maintaining the correct plenum distance for optimal air velocity—too little space creates turbulence; too much destroys velocity and fuel distribution quality. At just 0.19 lbs, it adds negligible weight while improving intake dynamics significantly.

This spacer is ideal for custom carb builds, street rods, restorations, and any Holley carburetor installation where air cleaner clearance or intake geometry needs adjustment. Compatibility extends across Holley's full carburetor lineup, including 4150/4160 flange patterns. Installation is straightforward—simply unbolt the air cleaner, position the spacer between carburetor and manifold, and secure with existing hardware. Mechanics and engine builders appreciate this component for solving fitment issues without requiring manifold modifications or expensive intake rework.