Spare parts from MI.R.A. are reliable and durable, however every consumable has a maximum service life. Car parts such as Valve stem seals from MI.R.A. are exposed to heavy loads and soiling, and should be exchanged at the intervals specified by the manufacturer of your car. MI.R.A. produces first-class automotive parts, so you can buy Valve stem seals from MI.R.A. without hesitation.