This Electronic throttle body is a direct replacement to OEM. No Need for after market Hardware and gaskets—Why??? Because our throttle bodies are direct fitment you will use your original hardware and gasket we provide! Some aftermarket throttle bodies on the market will require an aftermarket gasket as the original OEM will not work. Ours you will not need one. you will see no difference where your throttle body bolts to the manifold. Keep in mind that your manifold gasket is designed with 4 lips to properly stay in place between both surfaces while there is pressure in the induction system.