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, Ford 9.200 in. Deck, 4.125 in. Bore, 5.575 in. Length, +.020, Each

Dart Cylinder Sleeve, Cast Iron, Ford 9.200 in. Deck, 4.125 in. Bore, 5.575 in. Length, +.020, Each

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Dart Cylinder Sleeve, Cast Iron, 9.750 in. Deck, 4.000 in. Bore, 6.335 in. Length, LSN +.010 SF, Each

Dart Cylinder Sleeve, Cast Iron, 9.750 in. Deck, 4.000 in. Bore, 6.335 in. Length, LSN +.010 SF, Each

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Sonnax K2 Clutch Seal Ring Sleeve Kit, Aisin Aw, 09G, 09K, 09M, 6F21Wa, Tf-60Sn, Each

Sonnax K2 Clutch Seal Ring Sleeve Kit, Aisin Aw, 09G, 09K, 09M, 6F21Wa, Tf-60Sn, Each

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Dart Cylinder Sleeve, Cast Iron, Ford 8.200 in. Deck, 4.000 in. Bore, 5.175 in. Length, +.010, Each

Dart Cylinder Sleeve, Cast Iron, Ford 8.200 in. Deck, 4.000 in. Bore, 5.175 in. Length, +.010, Each

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Sonnax Lockup Relay Valve Sleeve Kit, A340, A340E, A340F, A340H, Each

Sonnax Lockup Relay Valve Sleeve Kit, A340, A340E, A340F, A340H, Each

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Dart Cylinder Sleeve, Cast Iron, BBC 10.2 in. Deck, 4.5 in. Bore, 6.77 in. Length, SF, Each

Dart Cylinder Sleeve, Cast Iron, BBC 10.2 in. Deck, 4.5 in. Bore, 6.77 in. Length, SF, Each

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