Genuine parts for Peugeot, Citroën and DS Automobiles are replacement Original Equipment Manufacturer parts identical to those fitted to the cars when they were built. They are precision engineered from high quality materials.
Maintaining a car precisely the way it was designed to exact factory specifications helps ensure that it keeps operating exactly as it did when it was new. All tests and tolerances for cars are based on genuine parts. Any difference, even a seemingly insignificant one, can have a knock-on effect, put unknown stresses on other parts and cause unforeseen failures.