Part #: 200-764
New OEM Genuine Nissan set of 12 valve seals. These seals will fit Datsun 240Z, 260Z, 280Z, and 280ZX, years 1970-1983. This is a full set of valve seals for the intake and exhaust valves. Valve seals can be replaced with the cylinder head still on the engine. If your Datsun Z engine is using oil but does not have any leaks and does not smoke out the tail pipe, then your valve seals might be worn. Worn valve seals can leak oil into the cylinder slowly and over time reduce the oil level.