Made by Airhead Parts / KGPR.
Heavy Duty (thick) material with a reinforced neck (the only ones made this way). Fits Vanagon Gas Engines from Vin number 25-D-089113 (4/83), Vanagon Diesel from Vin number 25-E-070001 (1/84).
Use your original cap, or order Part# 025-121-321 B HERE.
For the 24″ hose between this tank and the Recovery Tank behind the License Plate, order 1 meter of VW# N202811 (sold by the meter) HERE