The Deutz-Fahr 04310878 is a genuine OEM adjusting shim, also known as a 'Rondelle de Réglage', designed for precise spacing and alignment within various Deutz-Fahr agricultural and industrial machinery. With an inner diameter of 40 mm, an outer diameter of 55 mm, and a thickness of 0.5 mm, this shim ensures optimal clearances, reduces friction, and extends the lifespan of mating components by preventing premature wear. It is compatible with a wide range of Deutz-Fahr models including Agrotron, Agrostar, and DX series tractors, ensuring reliable performance and a perfect fit.