Engine covers are non-structural components affixed to the engine exterior, typically constructed from molded plastic or cast aluminum. They serve primarily to reduce engine noise, improve aesthetics, and protect components from debris and direct fluid contact. Designs vary significantly by vehicle application, often incorporating integrated air intake or coolant overflow reservoirs. Mounting utilizes bolts, clips, or a combination thereof, secured to existing engine mounting points or intake manifold surfaces. Some covers include heat shielding properties through material selection or integrated thermal barriers. Proper fit and secure fastening are critical to prevent vibration and potential damage to underlying components.