697-45384 Lock Ring Nut 697-45384-00-00 697-45384-00 For Yamaha Outboard Motor 40HP 50HP 55HP Lower Unit Spanner Nut Boat Engine 697-45384 Lock Ring Nut 697-45384-00-00 697-45384-00 For Yamaha Outboard Motor 40HP 50HP 55HP Lower Unit Spanner Nut Boat Engine. Sale price : $7.64 Category : Automobiles, Parts & Accessories