Manley Cylinder Head Bolt Kit, 1/2" Bolt, Hex Head, Steel, Natural, Small Block Chevy (1 Head) SKU MAN-42171 $39.11 Quantity discounts available QuantityPrice (0)No Reviews yet Number of Pieces Item Custom Price Quantity -+ Add to Cart Details Manley offers these superior cylinder head bolt kits for a variety of applications. They are longer than stock for use with washers, heat treated for ... Details Back DetailsManley offers these superior cylinder head bolt kits for a variety of applications. They are longer than stock for use with washers, heat treated for added strength, and their 1/2 in. hex head improves wrenchability. Ratings & ReviewsNo reviews availableBe the first to Write a Review