Using these AMS Performance engine coolant hoses is a breeze. First, locate the OEM position in your 2022 - 2025 Subaru WRX engine bay. Then, simply place the hoses in that spot without any need for cutting, trimming, or drilling. It's as easy as that! When it comes to maintenance, keep an eye on the hoses regularly. Check for any signs of wear, like cracking or dry rotting. Since they're made of 4 - ply silicone, they're quite durable, but it's still a good idea to do these checks every few months. Also, make sure your engine's coolant level is always appropriate. That'll help the hoses work at their best and keep your engine running smoothly. If you notice any issues, it's a good idea to replace the hoses right away to avoid engine problems.