Chevrolet Corvette C7 Z06 Rear Diffuser 2014-2019 Version 2***Fits both C7 Stingray and C7 Z06*** Diffusers work in conjunction with other aerodynamic components of a car to help produce downforce. Because a car displaces air as it moves forward, the air molecules in the rear of the car get disrupted causing a vacuum of low pressure air. To help channel the high speed air flow coming from underneath the car, diffusers redirects the high speed air flow to transition smoothly into the low pressure vacuum in the