Sierra 18-6412 Starter for 55-60 HP, 2 Cylinder Yamaha Outboard Engines Marine grade that meets SAE J1171 and ISO 8846 standards and High quality magnets/field coils provide better starting torque Replaces: Yamaha 697-81800-12, 99999-03249-00, 697-81800-11-00, 697-81800-12-00 and Arco 3424 Fits: 55-60 HP 2 Cylinder Engines with 9 Tooth Drive Gear Double sealed housings along with High quality brushes for Longer Service Life All Sierra parts qualify for and are covered under Sierra's Industry Leading Customer Satisfaction Warranty Before Ordering, Please Verify this is the Correct Part for your Application. For Assistance, Please Call Sierra's Tech Support at 1-877-663-8396