Bosch AFM sport air filter adapter is a custom diameter adapter for connecting high flow air filter to Bosch engine Air Flow Meter 
 
Material: ASA
Color: black
When you buy you will get:
1 piece adapter.
4 Bolts and Washers
Compatible with:
-3 series: BMW e30 all years,
-3 series: BMW E36 with M42 and M43 engines
-VW GOLF MK2 8V 88'
VW Golf  MK3 8V 92-94 2E
-Mazda MX5, Miata, 323, Familia
-many other cars from 80s and 90s with Bosch AFM air flow
Air MAF NOT Included!