Auto Parts Warehouse, AutoZone and Advance Auto Parts sell timing belts and chains. These retailers also offer a variety of other automotive parts, hardware and accessories.
The timing belt is an essential engine component that must be replaced at intervals of 50,000 to 75,000 miles, according to About.com. The belt regulates engine crank and cam shaft movement.
The consequences of a broken timing belt depend on the type of engine involved. Non-interference engines cannot function without an intact timing belt, but they do not incur serious damage when the belt breaks. Interference engines, however, often sustain catastrophic damage. Consequently, replacing the belt at the intervals recommended by the manufacturer is critical to the long-term life of the engine.