Mercury MERCRUISER - Elbow-To-Manifold Gaskets

Special Tools
7/8 in. Oxygen Sensor Socket obtain locally
32314
SPX socket (or equivalent 7/8 in. automotive oxygen sensor socket)
Aids in the removal and installation of oxygen sensors on products equipped with
Emissions Control.
Elbow‑to‑Manifold Gaskets
There are two styles of elbow‑to‑manifold gaskets. Gaskets with open water ports are used in seawater‑cooled systems.
Gaskets with blocked water ports are used in closed‑cooling systems. Indicator tabs around the perimeter of the gasket allow
easy identification of the gasket style when the gaskets are installed.
Models with closed cooling
a - Blocked water ports
b - Indicator tabs
a
b
51103
Seawater-cooled models
a - Open water ports
b - No indicator tabs
a
b
51104
Manifolds and Elbows
Page 7B-2 © 2016 Mercury Marine 90-8M0099748 eng DECEMBER 2015