The Brass Sea Water Pump replaces the front half of the Mercruiser housing assembly. It fits the following 4.3 Carb and MPI, 5.0 and 5.7 MPI, 357 Stroker, 377 MAG and MPI, 383 Stroker, 6.2 MPI, 8.2 Inboard and MAG, 496 MAG and H.O. This will also fit...