As your Pontiac comes ever closer to the hundred thousand mile mark, many components of the engine will start to age and wear out. Of all the components that should be inspected near this time, probably the most important is the Pontiac timing belt/timing chain. If this part breaks because a deficiency was not found early enough, it has the ability to damage other parts of the engine in the process, which could lead to very expensive repair bills. The Pontiac timing belt/timing chain drives the camshaft, and the camshaft operates the intake and exhaust valves. When the intake valve opens, it allows air into the combustion chamber, and when combined with fuel and ignited, produces power. Exhaust is then let out through the exhaust valve. An interruption in this process, like a broken Pontiac timing belt/timing chain, will cause the engine to stop running immediately. A worn Pontiac timing belt/timing chain can also cause this process to run inefficiently, making the engine run roughly, causing excessive noise, and increasing environmentally damaging emissions. Inspection at the periods suggested in the owner's manual will keep your Pontiac running smoothly and efficiently, as well as saving you some extra repair bills down the road. If you find that the Pontiac timing belt/timing chain is damaged, it is also necessary to replace any gears or pulleys in the timing system, so that none of the components will wear prematurely. In our online catalog, you will find the necessary Pontiac timing belt/timing chain kit for your vehicle, as well as many other parts and accessories, in stock and ready to ship. With our quick shipping, your new Pontiac timing belt/timing chain kit can be installed very soon.