The Moroso 4150/4160 carburetor spacer is a 1/2-inch phenolic spacer with a four-hole plenum designed for 4150/4160 carburetors. It adds a half-inch of spacing and helps isolate heat between the carburetor and intake while maintaining the standard four-bolt flange pattern used by those carburetor models.
Moroso 4150/4160 Carburetor Spacer - 4 Hole Plenum - 1/2in - Phenolic