This product has been discontinued by the manufacturer and has been superseded by Sierra 18-8808-2CDI 631-0015 Spark Plug Wires (6 Cyl) Conventional Ignition with Delco Breaker Point Distributor Mercury Marine 470, 485, 488, 3.7L Aluminum Block Engines Fits: Mercruiser; 1987 165 (224c.i.); 1985-1989 165, 170, 190 (224CID); 1985-1986 170 (224c.i.); 1987-1989 180LX; 1985-1986 190(224c.i.); 1988-1989 3.7L (224c.i.); 1988-1989 3.7LX; 1976-1984 470 (224c.i.); 1980-1982 485 (224c.i.); 1981-1984 488; Replaces: 18-8808-2; 84-816761K6; 84-816761Q6; 9-28014; 631-0015;