ARCO Inboard Starter, 12-3/4-Inch Flywheel, Gear Reduction

The ARCO Inboard Starter (Mercruiser, Volvo Penta, OMC, Yamaha, and other engines with a 12-3/4 in flywheel, Clockwise Rotation) is dynamically tested and packaged for out-of-the-box performance. This starter replaces all CW rotating 10MT starters with one long and one short bolt straight across the pattern, including mounting bolts and gasket, with anodized casting and a nickel-plated brush holder. It is designed for boaters who want nickel-coated and/or epoxy-painted construction to reduce corrosion, sealed to minimize water intrusion.

ARCO advises using a fully charged battery, since a weak battery can damage the starter and starter solenoid, and cleaning all connections regularly, as a corroded connection creates resistance and lowers the amperage required for an efficient starting circuit. Armatures are tested to withstand 50 times operating voltage (12 volts), backed by ARCO's warranty against defects in materials and workmanship for 12 months of leisure use (90 days for commercial or racing applications). Browse more options in our engine parts and maintenance category.

Key Features

• Fits Mercruiser inboards with a 12-3/4-inch flywheel, so it's a direct match without modification.
• Clockwise rotation matches your engine's required starter direction.

Frequently Asked Questions

What does this starter fit? Mercruiser, Volvo Penta, OMC, Yamaha, and other engines with a 12-3/4 in flywheel.

Why does ARCO recommend a fully charged battery? A weak battery can damage the starter and starter solenoid.

What voltage tolerance do the armatures withstand? 50 times the operating voltage (12 volts).