Accelerator cable conduit. 

Goes through the fan shroud.

(Accelerator Cable Tube seal)

Brand    USA 
Quality    Reproduction

FOR VEHICLES
Baywindow    1968 - 1979
Karmann Ghia    1961 - 1974
Beetle    1961 - 1968, 1970 - 1979
Splitscreen    1961 - 1967