This is the Grimmspeed Phenolic Intake Manifold Spacer. The main purpose of 'phenolc spacers' is to help absorb the heat between your intake manifold, and your engine block. On most vehicle appliations once you get done driving if you go ahead and touch your intake manifold then chances are you might BBQ your hand. The Grimmspeed Phenolic Spacer does an excellent job by absoring all the heat generated from your block which provides a cooler air charge to your intake manifold. And cooler intake temperatures mean more power and more torque.
This spacer has been made using genuine phenolic materials and power levels will increase 1% per every 5 degrees in temerature drop. Grimmspeed has installed this spacer with and without the OEM intake manifold gaskets and experienced no issues on either setup. However, they recommend new gaskets on both sides of the spacer for a reinforced seal.
Includes 3 long bolts with spacers to make for a ready installation.