While you will never wish to deal with the effects of an over heated engine, it is best to be prepared for the occasion. When your engine overheats the fluid in your cooling system sometimes expands as it absorbs that extra heat. When this happens the fluid needs a place to go or it will be forced out of your system and on to the ground. This overrun is a problem for two reasons. One, it causes a huge mess under and on your vehicle. And two, when water escapes your system that means that there is less water running through to cool your engine. Before you risk loosing the ability to lower the temperature of your ride you need to check the condition of your expansion tank. This tank is part of the cooling system in your vehicle and is responsible for containing over flow in an engine overheating situation If this tank is cracked or beyond repair you will need a Replacement Expansion Tank, and fast. Your stock expansion tank is crafted from clear plastic. However, when purchasing a Replacement Expansion Tank you have the option of splurging for more durable material and construction. You can also choose a tank that features superior temperature resistance to help guard against future cracks and breakage. The important thing, however, is to purchase a Replacement Expansion Tank at the first sign of trouble. If your engine doesn't have the protection of a good cooling system behind it you are doing your vehicle and yourself a huge disservice. Auto enthusiasts should definitely get superlative sales assistance when ordering dependable car parts from us. For all our customers, we've created a round-the-clock customer assistance desk to answer your requests. To make a good deal even better, there is free shipping for all orders above $50. If you find a better price, call us - we will beat any price advertised elsewhere.