BMW Genuine Vacuum Hose - Manifold to Brake Booster Check Valve for 320i 325Ci 325i 325xi 330Ci 330i 330xi E46 Vacuum Hose Manifold to Brake Booster Check Valve Brand NEW part with full 1 year warranty. BMW part# 34 33 6 751 108, check fit below. Genuine BMW part, recently made: not been lying around.