For any one who is interested on the new 24V (ISB/ISBe) multi ply/layer Exh Man gasket the part number is 3955339. The gasket is actually for the ISBe common rail engine but can be use on the ISB, same pattern. The gasket is more expensive but worth every dollar. It makes a huge difference on the stock manifold, have not seen one leak with these, and also improves the seal on the ATS when those outside bolts get loose. The multi ply/layer style has been used on the 12V and ISC for years and has reduce the leak issues.
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