Spark Plug Tube Seal - Valve Cover: Service and Repair

The spark plug tube seals are located in the cylinder head cover. These seals are pressed into the cylinder head cover to seal the outside perimeter of the spark plug tubes. If these seals show signs of hardness and/or cracking, they should be replaced.

REMOVAL
1. Remove cylinder head.
2. Using an appropriate tool, carefully remove spark plug tube seals. Care should be taken not to damage cylinder head cover sealing surfaces.

INSTALLATION
1. Clean all sealing surfaces.

NOTE: Position seal with the concave side facing the installation tool.

2. Install seals using Special Tool MB-998306. Only hand pressure on tool is needed to install new seals.
3. Install cylinder head cover.