1988-1989 Buick Regal Submodel: Coupe; Engine: 2.8L V6; Radiator Fan Motor; Position: Left;. 1989-1996 Buick Regal Submodel: Coupe; Engine: 3.1L V6; Radiator Fan Motor; Position: Left;. Buick Regal. 1990-1996 Buick Regal Submodel: Sedan; Engine: 3.1L V6; Radiator Fan Motor; Position: Left;.