The Prillinger 00121221 Piston Liner Set is a high-quality replacement component designed for John Deere agricultural tractors. This set is suitable for engines with 4 cylinders and 4.5 liters displacement. It features a bore of 106.5 mm and a stroke of 127 mm, ensuring optimal engine performance and durability. This piston liner set is an equivalent to John Deere part number RE500057, providing a reliable and precise fit for various John Deere 6010, 6020, 6030, 6M, 6R, 7030, and 7R series models.