If the condition of the crank mechanism and the cylinder block is unsatisfactory, it is more cost-effective to replace worn parts with remanufactured ones, which are supplied as spare parts by the manufacturer or car service centers. These kits include a crankshaft with a connecting rod and a piston group, an incomplete cylinder block (contains a cylinder block with installed crank mechanism and pistons) and complete cylinder block (contains the entire set of the incomplete cylinder block, as well as the oil pump, oil pan, cylinder head, valve and gas distribution mechanisms, chain or belt with pulleys, etc.).