ottmanifoldca18det17

Comparing the 2 lower intake manifolds, the CA18DET unit (top) does not pass the coolant through to the upper manifold like the CA16DE unit (bottom).

The CA16DE intake manifold with the AAC/IAA, EGR and cold start removed.
The CA18DET lower intake manifold and the CA16DE upper intake manifold test fit together.

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