Dart block sleeves are durable and reliable! Dart replacement sleeves are the same premium sleeves as those used in their race series blocks. Fit your aluminum blocks with the strength of Dart cast iron block sleeves.

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Dart Cylinder Sleeve, Cast Iron, SBC 9.500 in. Deck, 4.125 in. Bore, 6.500 in. Length, NF x tra thick, Each

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