Using these AS3 Performance silicone radiator hoses is easy. First, make sure your vehicle is turned off and cooled down. Then, carefully remove the old radiator hoses. Install the new AS3 hoses in their place, making sure they fit snugly. When using these hoses, remember they're only for off - road and track use, so don't use them on public roads. For maintenance, regularly check the hoses for any signs of wear or damage. If you notice any issues, contact us right away. Keep in mind that these hoses come with a 12 - month warranty from the date of purchase, so you can have peace of mind while using them.