The Moroso Quadrajet carburetor spacer is a 1/2-inch phenolic spacer with a four-hole plenum pattern made to fit Quadrajet applications. It provides thermal isolation and added plenum height while preserving the Quadrajet flange pattern, offering a phenolic half-inch spacer choice for that carburetor family.
Moroso Quadrajet Carburetor Spacer - 4 Hole Plenum - 1/2in - Phenolic