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.020 Description : Engine Piston Ring Set Piston Ring Size : 0.020IN 2004 Scion xA Base L4.1497cc Engine Components::Piston Rings 2004 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