Timing Belt : A critical part of the engine on many cars, trucks and suvs. This belt will take the place of a timing chain. A timing belt is rubber belt with teeth designed to synchronize the camshaft with the crankshaft inside your engine. The timing belt helps reduce engine noise since it is made of rubber. Timing belts are designed to wear out and a set mileage determined by the auto manufacturer. If the timing belt is not replaced timely, it has a great chance of breaking. When a timing belt breaks, it may cause damage to the valves, cylinder head and or pistons. Warning signs of a broken timing belt can be the vehicle suddenly shutting off, no start, and sounds different while cranking and not running. In some cases, an automobile vehicle owner may not know the life on a timing belt on their vehicle. A qualified experienced auto mechanic can remove a timing belt cover and inspect a timing belt to try and help predetermine the life of the timing belt. During a timing belt replacement, a water pump, timing belt tensioner and engine seals may be needed to ensure a lasting, quality repair.