Did you ever go for a really hard run or some other form of hard exercise and then stop completely without cooling down? Of course you didn’t. Even if you stop running, you continue to breath hard without much control over your breath and perhaps walk around a little bit. Your engine, on the other hand, cannot keep running after you turn off the key in order to cool down. If you run an engine hard and stop it without cooling it down, you can cause damage over time. If your engine is hot when you turn it off, it will not be able to cool itself because the cooling system has been shut down. You can actually overheat an engine while it is turned off. With an Apexi Engine Shut-Off Timer, your engine will be able to cool itself down after you shut off the key. You can turn off the key, lock your car, and walk away, and your engine will continue to run for a predetermined length of time. If you have run the engine very hard, you may wish to set the Apexi Engine Shut-Off Timer up to run for a while. So protect your engine with an Apexi Engine Shut-Off Timer. It will last longer, the block will be more stable, and your engine will thank you. Auto part customers want courteous support and help while considering dependable auto parts from us. Thus, we run a 24/7 customer support bureau to aid you with your requests. To sweeten the deal, there is always 100% free shipping for all orders greater than $50. If you spot a lower price elsewhere, call us - we will meet or beat any legitimate auto part price.