Mercury - Steering Lock for Trailering Rigging Accessory 8M0086774. OverviewThis steering lock is made for boats equipped with Joystick Piloting for Outboards, giving you a simple way to keep the engines from swinging around while towing. It fits over the tie-bar arm and link rod on each outer engine, holding everything steady so nothing shifts or bumps during transport. It's one of those small pieces that makes hauling a multi-engine boat a lot less stressful.. Key Features • Trailering Stabili