Vacuum hose:
RealOEM.com - Online BMW Parts Catalog
Vacuum pump:
RealOEM.com - Online BMW Parts Catalog
Side note there's a pretty cheap rebuild kit for that vacuum pump. I bought mine from BMP Designs (I can't find the link though so they may have closed up), but there's plenty of eBay sellers, or some have just measured and purchased from Harbor Freight. I'm assuming yours was leaking at some point with all that RTV...