MAN Electronic control unit 51274350006

About this part

Genuine MAN electronic control unit for the D2866 LE401 and D2840 LE301. On the earlier electronically controlled engines in this range, the control system is simpler than on current designs and correspondingly easier to diagnose with basic equipment — but the wiring is older, and age is what usually causes trouble. Insulation hardens, connector seals perish, and terminals that were sound for twenty years begin to give intermittent contact. Where faults appear on an engine of this generation, the harness deserves examination before the control unit, since it is both the more likely culprit and the more repairable one. Wiggle-testing connectors with the engine running, while crude, finds a surprising proportion of faults on harnesses of this age and costs nothing but a steady hand. Wiggle-testing connectors with the engine running, while crude, finds a surprising proportion of faults on harnesses of this age.

Supplied new, in the manufacturer’s packaging, with our warranty of up to 24 months.

Engines this part fits