Part Type: A/C Accumulator. 1985 Buick Century Submodel: Custom; Engine: 3.8L V6 GAS; EngineCode: LN3; EngineVIN: 3; FuelSystem: FI; MFI; Electronic;. 1985 Buick Century Submodel: Estate Wagon; Engine: 3.8L V6 GAS; EngineCode: LN3; EngineVIN: 3; FuelSystem: FI; MFI; Electronic;.