Mercedes ECU 

Up for sale is a Working, in excellent condition Mercedes Engine Control Unit.

MERCEDES S-CLASS 98-99 W140 Type, Elec Cont Module (ECM); (R Rr eng comp), S420

E420

  Ident: 0215452332    021 545 23 32    0 261 204 520

Control module may require programming before interchanging.  Please check the part number off your original unit to ensure proper fitment.

Please note, that misdiagnosis of a good working ECU is one of the primary reasons we get these units returned. We no longer accept returns on these units without a 30% restocking fee and there are NO refunds on our original shipping cost. We test all units we possibly can, and will test any returned units. All units we sell are operational units that came out of crash damaged salvage cars. Unlike most sellers on ebay, we never sell ECU's from no-start cars or from flood damaged cars!