Mercury - Quicksilver 8112231 Carburetor Gasket Set Mercury & Mariner 2-Stroke Outboards OEM Replacement 8112231. Overview. Smooth throttle response and steady idle start with a properly sealed carburetor. The Quicksilver 8112231 Carburetor Gasket Set gives your outboard exactly that - a tight, reliable seal that keeps fuel and air flowing in perfect balance. Built to OEM specs, this kit is designed for Mercury and Mariner 2-stroke outboards from 30-125 horsepower, covering two-, three-, and fou