This is the gasket that is for the water pipe part number 025121171 that is located under the alternator on all Vanagon waterboxer engines.
Thermostat Housing Cover
Coolant Hose Bleeder Assembly in plastic (manual transmission) for 1.9l Vanagon 83.5-85
Coolant Hose Kit for 1.9l Vanagon with plastic coolant pipes
Coolant Hose kit for 86-87 Automatic 2.1l Vanagon
Long Coolant Pipes for 1.9L Vanagon in Stainless Steel (85 only)
Upper Radiator Feed Hose for 86-91 2.1L Vanagons