Quick Fuel Technology Carburetor Spacer 300-4000QFT; 4150 Square Bore .500"

QFT(TM) carburetor spacers are available in a variety of configurations, from the transition blend spacer which merge open plenum with four-hole design for better mid-range and high RPM power, to phenolic spacers, as well as, anti-reversion and shear plate spacers. Anti-reversion plates and shear plates are designed to improve air flow and assist in atomizing fuel at higher RPM's. The design helps improve signal to the carburetor and flatten the fuel curve.