The adapter fits a 1 1/4" vacuum hose &up to a 3/8" blast nozzle while doing intake manifold walnut blasting on the intake valves.
BMW N54 / N55 / N20 Intake Port Vacuum Adapter for Walnut Blasting -- free ship
BMW Tool 110370 Front Crankshaft 65mm Seal N20 N26 N43 N45T N46T N52 N54 N55
Special Tool for BMW N20 N46 N52 N54 N55 Engine Tow Hook for Added Performance
Fuel Injector Puller Remover Slide Hammer Tool BMW N14 N18 N20 N54 N55 N63 S63