Carburetor Spacer Phenolic 1" 25mm Riser Rochester Quadrajet

Carburetor Spacer Phenolic 1" 25mm Riser Rochester Quadrajet
4-Hole, Spread Bore
Phenolic Thermoset plastic insulates against manifold heat
Keeps fuel cooler to reduce vapor lock & increase charge density
1" height increases plenum volume
May increase performance in some applications
Gasket & installation hardware included
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 is design for GM (General Motors) Quadrajet 4-barrel carbs and may also work with other spreadbore design carburetors. Gaskets, studs, washers and nuts are included.