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The Moroso exhaust block-off storage plates for Chevrolet Big Block Mark IV with conventional heads are a pair of aluminum plates that block off unused exhaust passages. Supplied as a matched set, they provide a clean storage or sealing solution where original exhaust ports are not used, helping prevent leaks and simplifying engine bay finishing on big block Mark IV installations.
Moroso Chevrolet Big Block Mark IV (w/Conv. Heads) Exhaust Block-Off Storage Plate - Aluminum - Pair
