The secondary air injection system is an emission control device that introduces fresh air into the engine to prevent high emissions during startup. Turner Motorsport has all of the SAI parts you will need to get your BMW emissions compliant.
Genuine BMW Tubing Support This item fits the following BMW Chassis: E36 M3,E46 M3,E70 X5M,E71 X6M,E82 1M Coupe,E53 48IS,E34,E36,E38,E39,E46,E53 X5 X5,E70 X5,E71 X6,E82,E90,E92,E93,F15