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 : mhl41585 Description : Engine Piston Ring Set Piston Ring Material : Chrome Carbon Steel Piston Ring Type : Premium Piston Ring Size : Standard 1990-1991 Toyota Celica ST L4.1587cc Engine Components::Piston Rings 1991 Toyota MR2 Base L4.2164cc Engine Components::Piston Rings