1/2in Carb Spacer

The Walker Engineering 1/2in Carb Spacer is a precision aluminum air cleaner spacer designed to optimize carburetor mounting and intake manifold clearance on classic and performance engines. This half-inch thick spacer features a 5-1/8 inch carburetor flange and is machined from lightweight aluminum in a natural finish, providing a direct solution for engines requiring precise intake geometry.

Weighing just 0.14 pounds, this compact spacer measures 0.5 x 0.5 x 5.5 inches and integrates seamlessly into carburetor installations. The aluminum construction ensures durability while minimizing additional weight to the intake system. The 5-1/8 inch flange diameter matches standard four-barrel carburetor bolt patterns, making this spacer compatible with common vintage and street engine builds. Proper carburetor spacer selection affects fuel distribution, air velocity, and thermal management within the intake tract—specifications that directly influence cold-start performance and mixture consistency across the RPM range.

This spacer is ideal for engine builders, restoration technicians, and performance enthusiasts working with small-block and mid-size engines where intake manifold-to-carburetor spacing requires adjustment. Whether troubleshooting carburetor clearance issues, correcting fuel bowl orientation, or fine-tuning intake manifold flow characteristics, this Walker Engineering spacer provides the exact dimensionality needed. The neutral finish allows integration into stock or modified engine bays without visual compromise, and the aluminum material resists corrosion from typical underhood moisture and heat cycles.