Oil Filler With Tube & Cap, 1500cc & 1600cc Type 1 Engine

If you're looking to replace your stock oil filler with the tube and vent that goes to your air cleaner, this is a great unit.  It requires the special stock VW oil filler nut and seal to install it, and it's a good idea to install the little "duckbill" valve on the bottom to keep road dirt from contaminating your oil system.