As the miles increase on your EA837 3.0 TFSI equipped B8/B8.5 Audi S4/S5/Q5/SQ5, C7 A6/A7, or D4 A8, the factory direct injectors are prone to failure and should be replaced as proactive maintenance.
Purchased individually, these are genuine OEM Audi Direct Fuel Injectors designed to replace the factory injectors in your B8/B8.5 Audi S4/S5/Q5/SQ5, C7 A6/A7, or D4 A8 3.0 TFSI.