If you are trying to install a cold air intake on an older BMW that has a M20, M30, or M42 you may find it difficult has the MAF is square, and most cold air intakes utilize a 3" duct. This adapter will be what you need. Converts your square MAF to a 3" inlet to install cold air intakes. Includes plastic gasket.
This works very well with our Budget Carbon Fiber Cold Air Intake.
Fitment: M20, M30, M42 (May fit other older BMWs with this style MAF)
