Phenolic is a heat insulative material. The ZZP intake spacer installs in 2.5 hours and keeps the intake from getting heat soaked from the engine. 

This is a laser cut piece breaks the aluminum on aluminum contact between the upper and lower intake manifolds. Cooler charge temps increase HP with denser intake air and keep the engine safe from heat-related KR.

Note: Should also fit the LF3 in the CTS V-Sport, some bending/modification of the firewall may be needed.