This is a genuine DEUTZ-FAHR 4515776 Piston Ring Set, an original equipment manufacturer (OEM) part designed for Deutz engines with a 100mm bore. The set includes multiple piston rings with specific thicknesses of 3.0mm, 2.5mm, and 4.0mm. It is compatible with a wide range of Deutz-Fahr tractors equipped with Deutz F3L912, F4L912, F6L912, F3L913, F4L913, F5L913, F6L913, BF6L913, F3L913T, F4L913T, F6L913T, BF6L913T, F4L913W, F6L913W, F3L913FL, F4L913FL, F5L913FL, F6L913FL, F3L913TFL, F4L913TFL, F6L913TFL, BF6L913FL, BF6L913TFL, F4L913WFL, and F6L913WFL engine series, ensuring optimal engine performance and longevity.