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, 3.300 in. (84.5mm) Deck, 5.00 in. Length, Each

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Dart Cylinder Sleeve, Cast Iron, BBC 10.4 in. Deck, 4.6 in. Bore, 7.00 in. Length, SF, Each

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Dart Cylinder Sleeve, Cast Iron, Ford 9.5 in. Deck, 4.000 in. Bore, 5.850 in. Length, +.020, Each

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Dart Cylinder Sleeve, Cast Iron, BBC 9.800 4.500 in. Bore, 6.370 in. Length +.030, Each

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Dart Cylinder Sleeve, Cast Iron, BBC 10.2 in. Deck, 4.6 in. Bore, 6.77 in. Length, SF, Each

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