MAN Alternator 51261017252

About this part

Genuine MAN alternator for the D2842 LE443. Alternators fail in a small number of recognisable ways, and distinguishing them saves replacing a unit that could be repaired. Worn brushes produce intermittent charging that improves at higher speed; a failed diode produces reduced output with a characteristic whine on radio equipment; a failed regulator produces either no output or overcharging, the second of which destroys batteries quickly. Brushes and regulators are serviceable items on many units. Measure output at the battery with the engine running before condemning the alternator, since a corroded connection produces identical symptoms at no cost to fix. A multimeter across the battery terminals with the engine running takes seconds and settles most alternator complaints without removing anything.

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

Engines this part fits