A timing belt is a crucial component in an internal combustion engine. It synchronizes the rotation of the crankshaft and the camshaft, ensuring that the engine's valves open and close at the correct times during each cylinder's intake and exhaust strokes. This precise timing is essential for optimal engine performance and efficiency. Typically made of rubber with high-strength fibers, timing belts are designed to withstand high temperatures and pressures. Regular maintenance is important, as a worn or broken timing belt can lead to severe engine damage. Many manufacturers recommend replacing the timing belt every 60,000 to 100,000 miles to prevent potential issues.