The force that provides power for a Lexus is called internal combustion, a complexly timed process of air intake, compression of gasoline, detonation, and exhaust. The links that maintain the correct timing between engine revolution and the combustion process are called the Lexus timing belt & Lexus timing chain. One of these two systems is installed in every vehicle, and it connects the crankshaft to the camshaft, to operate the valves of the intake and exhaust properly. Both the Lexus timing belt & Lexus timing chain allow for the adjustment of the engine timing for various driving applications, and the process is called either advancing or retarding the timing. Adjusting the timing is often a very complex process, requiring special tools and a great deal of engine knowledge. If the Lexus timing belt & Lexus timing chain are not properly fine-tuned, the car may run rough or possibly not at all. After about 80,000 miles for most vehicles, or as low as 60,000 miles for certain engines, it will be necessary to have the parts of the Lexus timing belt & Lexus timing chain inspected for proper operation. Normal wear will eventually cause the systems to fail, and because they could possibly cause damage when they do, it is important to catch them before they fail. In our vast online catalog, the correct Lexus timing belt & Lexus timing chain parts can be found for virtually any model of Lexus. They are sold as a complete kit with the proper pulleys and gears, to ensure that all parts wear equally. Both our Lexus timing belt & Lexus timing chain come with a full warranty from the manufacturer, and will last at least as long as the original parts, and are easy to order online or via our 24-hour toll-free number.