Buick Nail-head Riser Intake Manifold Phenolic Insulator Spacer For Heat Soak

This 1/4" thick phenolic risers for the 1957-66 Buick 364-400-401-425 Nailhead V8 engines . Add a little performance to your machine the cheap way, and keep the heat away from the intake so the carburetor stays cool to solve the heat soak or carburetor boiling issues.

Price is for 1 set of risers.