A bonnet stay rod, also commonly referred to as a hood prop rod, is a slender, usually metal or composite, support tool used in automobiles to hold the bonnet or hood in an open position. This component is essential for propping the hood open while performing maintenance or repairs on the vehicle’s engine or other components.

The bonnet stay rod is typically designed to fit securely into designated attachment points, ensuring safe and convenient access to the engine bay. It plays a vital role in providing mechanics and car owners with a stable and secure means of keeping the hood elevated during inspections or repairs, making it an indispensable tool for automotive maintenance and safety.