Chevrolet Performance LSX Engine Block - 4.065" Bore - 9.240 Deck - Standard Main - 6-Bolt Main - 1 Piece Seal - 6-Bolt Head - Iron HS210020 Fittings fit in a 5/8" 39703 Size:Small (48) 6 Head Bolt Design GMP19170419
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Ships within 48 hours · Estimated delivery Oct 10 - Oct 15