A timing belt is a crucial component in an internal combustion engine. It connects the crankshaft to the camshaft, ensuring that the engine's valves open and close in sync with the pistons. This synchronization is vital for optimal engine performance and efficiency. Typically made of rubber with reinforced fibers, a timing belt is designed to withstand high temperatures and stress. Regular maintenance is essential, as a worn or broken timing belt can lead to severe engine damage. Replacing the timing belt at recommended intervals can help prevent costly repairs and ensure the longevity of the engine.