999-064-010-02 Oil Pressure Relief Plug for 356B, 356C, 912, and 911 (1965-1970)

For 356A T-2 thru 912 engines -- Two of these plugs hold the oil piston and the spring in place. One goes in the case and the other in the timing cover.

Note: The copper seal ring for this plug is: 900 123 025 70