Quadrajet four hole design 1.00" height. Manufactured from advanced phenolic thermoset plastic and engineered to withstand extreme high intake manifold temperatures. These spacers are designed to insulate and reduce heat flow to the carburetor keeping it cooler to allow a denser fuel mixture to enter the engine and produce more horsepower. Comes complete with gaskets, studs, nuts & washers.
This 1 inch tall phenolic thermoset plastic spacer insulates your carburetor against manifold heat keeping it cooler and helps prevent fuel percolation (also known as vapor lock) in hot weather. This can also allow for a denser fuel mixure to help increase performance in some applications, as well as provide additional plenum volume. 4-hole design fits Holley 4150/4160 4-barrel carbs as well as mo..
Let me help you spend some money :)