Triumphs Only, Inc. - Triumph Technical Service Bulletin

Cylinder Head Gaskets- Stag

May, 1973
The cylinder head gasket has been modified and was put into production commencing at serial number LE 20001U. The '72 gasket (part #214705) can be easily identified in as much as it is 0.040" thick, and the metal bridge piece between the center pair of cylinders is copper.

The '73 gasket (part #218981) is 0.055" thick; and the bridge piece between the center pair of cylinders is steel. In addition to this, six slots for water transfer have been added adjacent to the center pair of cylinders.

Please note that the '73 gasket can be used to service all model Stag engines, whereas the early type can only be used on engines up to the end of 1972.

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