Coolant Overflow Tank for water-cooled Vanagons 83.5-91

This is the white plastic tank that lives behind the license plate door in all water-cooled Vanagons from 83.5-91. The cap is not included. PN for cap is 025121482

I don't think this will work on an 82 Diesel Vanagon.  If you find out differently, please let me know.  It should work on 83 and later Diesels.