1996 Buick Regal Engine: 3.8L V6; Molded Rubber; Water Pump Mounting Gasket;. 1997 Buick Regal Engine: 3.8L V6;EngineVIN: 1; Molded Rubber; Water Pump Mounting Gasket;. 1997 Buick Regal Engine: 3.8L V6;EngineVIN: K; Molded Rubber; Water Pump Mounting Gasket;.