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The 1974-75 and 1981-85 12A Engine-to-Manifold Mazda Factory gasket is intended to fit securely between the intake manifold and the engine. (Photo shown is of actual gasket)
If you are installing a Racing Beat Holley or Dellorto intake manifold,...
The Mazda Factory Intake Water O-Rings are designed to mount between the intake manifold and the engine.
Sold individually, two (2) required per intake manifold.
1974-78 13B 4 Port Engines
1974-85 12A engines