Datsun / Nissan 280 ECU Up for sale is a Working, in excellent condition 1979 Datsun / Nissan Engine fuel control module. Part number-- A11-604 420 (A116104420) , This ECU came out of a 79 and pretty specifically states on the sticker that it should only be used in 1979 models... But may fit other models/years, 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 are not at all easy to find, at any price much less as fair as this.