Intake Port Vacuum Adapter for Walnut Blasting for BMW engines N20 N54 N55
Commonly found on BMW 535i 335i x5 x6 135i and various other models between 2006 to today.
(Not sure which engine is in your car.. Check the list at the bottom of this Description to verify.)
The outlet is sized roughly for a 1 1/4" shop-vac hose, and the hole is sized for 1/8" black pipe. Depending on your application you may want to use duct tape or rubber hose and clamps to help secure your hose to the adapter.