IMPORTANT: The mounting brackets facilitate installation and are suitable for a wide range of vehicles. You can check compatibility on the website of OSRAM. Only the combination of OSRAM NIGHT BREAKER LED bulbs with official OSRAM accessories is approved: LEDriving ADAPTER and LEDriving SMART CANBUS (if required). Ideal for vehicle models with an H19 fitting. Minimum manufacturing tolerances for correct positioning of the H4/H19 LED lamp. Adaptation of standard H4 LED bulbs for use in H19 headlights.