ECM7057 Engine Control Module EM7057 1986–87 Buick Riviera & Toronado 3.8 L V6
V6 GAS OHV Naturally Aspirated. 1987 Buick Riviera Luxury Coupe 2-Door 3.8L 3800CC 231Cu. 1987 Buick Riviera T-Type Coupe 2-Door 3.8L 3800CC 231Cu. 1986 Buick Riviera Luxury Coupe 2-Door 3.8L 3800CC 231Cu.