Datsun / Nissan 280 ZX ECU Up for sale is a Working, in excellent condition 1981 Datsun / Nissan 280 ZX Engine fuel / engine control module. Part number-- A11-620 600 (A11620600) , This may fit other models/years, my list shows this may fit 79-81, but that's up to the buyer to find this out. 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 before they were were nearly $700. Now, they are not at all easy to find, at any price much less as fair as this.