OEM Mercury / Quicksilver 16951Q1 Sterndrive or Inboard Engine Block or Manifold Brass Drain Plug

Engine block or manifold drain plug 16951Q1 fits most MerCruiser sterndrive or inboard engines blocks and manifolds to make draining cooling water for winterizing or changing anti-freeze easier. Can be used with engines equipped with closed cooler or raw water cooling systems. May also fit other brands of sterndrive or inboard engines and manifolds. See your owner's manual for installation instructions and application information.