MAHLE Original piston rings are the most technically advanced piston rings in the industry. Driven by OE requirements; reducing friction and ring mass while minimizing engine oil consumption, and providing longer service life. MAHLE Original piston rings lead the industry for the latest piston ring technology. PartNumber : mhl42144CP Description : Engine Piston Ring Set Piston Ring Material : Gas Nitride Stainless Steel Piston Ring Type : Premium Piston Ring Size : Standard 2004-2006 Scion xA Base L4.1497cc Engine Components::Piston Rings 2004-2006 Scion xB Base L4.1497cc Engine Components::Piston Rings 2000-2005 Toyota Echo Base L4.1497cc Engine Components::Piston Rings 2001-2005 Toyota Prius Base L4.1497cc Engine Components::Piston Rings