ARCO NEW Premium Replacement Alternator Fits: Mercruiser, BRP-OMC, 12 Volt, 70 Amp, Self exciting, Ignition protection screens, Internal regulator, Negative ground, 1-wire connection, 2-inch mounting foot, Single groove pulley included. Replaces Part Numbers: MERCURY 32701 MERCURY 47456A1 MERCURY 56045 MERCURY 59755 MERCURY 69729