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Typically on our engines we run 2x sets of #VS-H5.5E-8. Yes, exhaust valve seals on the intake side. We do this because the price difference is negligible and the exhaust valve seals are rated for higher temperatures and they are virtually identical in dimensions. If you have a preference of running #VS-H5.5E-8 for exhaust and #VS-H5.5I-8 for intake we can surely do that, but we do suggest to just run 16x exhaust valve seals across the board, it's cheap insurance.

Supertech 5.5 Viton valve seals

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