CP Replacement Piston Ring Subaru WRX / STI EJ257/EJ255 2004-2021

CP Piston Rings are available individually. They're specifically designed for CP Pistons in Subaru WRX, STI, Forester XT, Outback XT, and Legacy GT models. Each ring is for one piston, and you'll need 4 to complete a set.

These CP piston rings are easy to use. First, make sure your engine is cool and you've prepared all the necessary tools. When installing, carefully place the ring on the piston as it's designed for a single piston. Remember, you need 4 rings for a full set. As for maintenance, regularly check your engine oil level and quality. If you notice any strange noises or performance issues, have your engine inspected. Keep in mind that these rings are only for CP Pistons in specific Subaru models, so don't use them in other non - compatible engines.