New bolt for the top row of the intake manifold to cylinder head on Datsun 280Z and 280ZX. These are M10 fine thread bolts with small JIS head required for clearance. Four bolts per manifold. Sold individually. Intake bolts are typically M8 but the fuel injection cars used these M10 bolts as well on the top. The two inner bolts are shorter and the two outer bolts are longer. Choose from OEM Nissan (long/short), ARP stainless (long/short) or stock replacment style zinc finish (long/short).