Original Volvo Penta cylinder head bolt set used to secure the cylinder head to the engine block. These bolts are engineered to meet precise torque and stretch specifications, ensuring proper sealing of the head gasket and correct engine operation. This is a genuine Volvo Penta OEM part . Part number: 24778733 Compatibility Suitable for Volvo Penta engines: D2-40 D2-40B D2-40F D1-30 D1-30B D1-30F MD2030 MD2030B MD2030-C MD2030-D