This is a ECM ECU engine control module for a W140 Mercedes S-class. The part number is 140 545 34 32 / 1405453432 

 Up for sale is a Working, in excellent condition Mercedes E-gas multi function Control unit. This is for W140 models. This controls the throttle & the ABS system, and other sub systems use it as a pass-through. This unit commonly fails and causes a whole host of drivability problems with these cars. The cost of a new unit is OVER $2500 from VDO. Get yours here for MUCH less.

Good tested used unit with a 30 day warranty. VDO / Mercedes Part number listed at top. This should fit the 1992 1993 500SEL and 1994 1995 S500, But as always, check your ECU's part number on your original unit to be sure this is the right one for you.