Open Style or 4-Hole Spacers Available

Air Flow Research 1" carburetor spacers are manufactured from phenolic plastic and can be installed on any 4150 style carburetors, both spacers are to improve your engines output and air/fuel distribution by lengthening the intake mixture column. Both versions act as a heat barrier between the manifold and carburetor to keep the fuel in the float bowls cooler, as well as the actual carburetor's body itself. Which results in cooler, denser air/fuel induction charge for increased HP. Both have a clover leaf design reducing some of the turbulent air directly under the carburetor base making them more efficient. The open spacer is to increase high-RPM power, while the tapered 4-hole spacers to help increase mid-range torque. They fit the AFR line of composite intake manifolds perfectly but can be used on most aftermarket manifolds as well.