Castro Motorsport 2-Piece Air Box e30

This is a 2-Piece Cold Air Intake box for late model e30's. This part also fits e30's that have a late model expansion tank.

Completion Kit - Air Filter, Coupler, Hose Clamp, Metal Sleeve (additional $75)

Note: Please specify with your order which size filter kit you need 3" or 3.5".