For Engine Models: PN FM-24-70a
Our most popular 24-volt marine alternator model, the Cruiser-Series SM-24-70a, is the ideal choice for applications that require higher, 24-volt charging capacity. Identical in size to our 12-volt Cruiser models, the 70A amp alternator is compatible with 40 hp or larger marine diesel engines equipped with dual 1/2” V-belts, or 6-groove or larger serpentine belts. This alternator delivers roughly 40amp at idle and 70+ amps at cruising rpm.
While it equipped with an internal 28.2-volt single-stage voltage regulator, we strongly recommend our 24-volt E-MAAX regulator to ensure optimal support for your deep-cycle house battery loads. Can also be used with Mastervolt Alpha Pro and Balmar Max Charge voltage regulators. For use on engines with a 3.15” saddle-style mount.