1979 Buick Regal Submodel: Coupe; Engine: 4.9L V8;EngineVIN: W;. 1981 Buick Regal Submodel: Coupe; Engine: 4.3L V8;. Check Valve, Heater Valve. 1980 Buick Regal Submodel: Coupe; Engine: 4.3L V8;. 1980 Buick Regal Submodel: Coupe; Engine: 4.9L V8;.
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