Phenolic Carburettor Spacer Open Port Holley Squarebore. 12mm (1/2 Inch) Thick

Phenolic Carburettor Spacer Open Port Style suit Holley Squarebore. 12mm (1/2 Inch) Thick.

Manufactured from heat insulating phenolic material, which insulate the carburettor from the manifold to keep incoming air and fuel cooler.
This plenum spacer is designed to increase the air and fuel charge velocity, helping to improve low and mid-range torque.
Includes Gasket, Studs, Washers and Nuts.