Just as detailed in the store at...https://www.celicahobby.com/catalog/product_info.php?products_id=171
Fits most aftermarket air filters with 2.5, 2.75, and 3 inch outlet flange such as INJEN, AEM, AC, K&N...etc. Does not fit "mushroom" or "blow-off" type air filters, or air filters with integrated heat shields.
yup.. It will fit the AEM
(2.75") just fine
The correct way to face it is so that the opening is facing slightly downwards, so as not to creat a "CUP" for the water to collect inside of...