Datsun / Nissan 300 ZX ECU Z31-VG30E Up for sale is a Working, in excellent condition Nissan 300 ZX non Engine fuel / engine control module.A18-631 660 Model year 1985 300ZX Non turbo Manual transmission Federal Emissions - Engine Z31-VG30E 23710-01P60It is the buyers responsibility to verify if this is right for their car. As you probably know, this is a pretty hard one to find at a reasonable price. As always your best bet is to match the part number to the one on your original ECU. These units have been NLA for quite a while now, and are not at all easy to find, at any price much less as fair as this. These are usually fairly reliable, however can easily be damaged by wiring faults or voltage spikes (caused by a faulty alternator). A faulty ECU can cause problems ranging from a bad idle control circuit to random no injector pulse signal (causes no start or random cut outs) & many others. Comes with a 30 day guarantee. See the details in the next page in the return policy.