This is a California Emissions Air Flow Meter for 80-83 Air-Cooled Vanagon. California Emissions means that your van originally had electronic ignition (no points in distributor, instead a hall sensor). $295 plus $100 core charge.
Bosch number is 0280200030
UPDATE: Right now we have no core available for this part. That means we are doing these on a rebuild and return service only. You buy one through the website, then mail your old one to us, and we will have it rebuilt. The process take about two weeks.