BMW E24/E23 ECU Up for sale is a Working, in excellent condition BMW E24 ECU. Bosch Part number-- 0 280 001 108 (0280001108). This unit is from a 78 633csi, this ECU should also work with some (if not all) 78-84 e23 735i's and perhaps even some e28 535i's, check your ECU's part number to be sure this is the right one for you. This is one of the most common no start or random stalling problems with these Jetronic ECU's. If yours does not have this problem, keep an extra ECU in the trunk, you might some day be glad you did... These units now have to be special ordered from most dealers new for big $$ (often times over $1000!), and finding a good one second hand is getting to be a very hard chore.