Part Type: Engine Coolant Reservoir Cap. Coolant Recovery Tank Cap. 1990 Volkswagen Passat Submodel: GL; Engine: 2.0L L4;. 1991 Volkswagen Passat Submodel: GL; Engine: 2.0L L4;EngineVIN: B;. 1991 Volkswagen Passat Submodel: GL; Engine: 2.0L L4;EngineVIN: C;.