BMW E30 ECU Up for sale is a Working, in excellent condition BMW E30 ECU. Bosch Part number-- 0 261 200 525. This unit is from a 90 325i, and is in great shape. This is one of the most common no start or random stalling problems with these Motronic 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. Unit comes with a 30 day replacement warranty. See details in the return policy section of the listing. 

1989 1990 1991 BMW 525i/325i/325is

ECU Engine Control Unit

OEM# 0 261 200 525