Inlet manifold studs are threaded fasteners used to attach the inlet manifold to the engine's cylinder head or engine block. These studs provide a secure connection between the manifold, which channels air and fuel into the engine, and the engine's mounting surfaces. Typically made from high-strength materials such as steel or stainless steel, inlet manifold studs ensure a tight and stable fit to prevent air leaks and maintain proper engine performance. They are essential for maintaining the integrity of the air-fuel mixture entering the engine and ensuring reliable operation.