MAN Crankshaft 51021016121

About this part

Genuine MAN crankshaft for the D2842, MAN's 21.9-litre V12 rated up to 800 kW. Most crankshafts that come out of service were not the first thing to fail — the usual sequence starts with oil that has picked up contamination or lost pressure, moves to a bearing shell that wears through, and only then reaches the journal, which the failed shell scores. That matters when ordering, because fitting a new shaft without establishing what damaged the old one tends to produce the same outcome again. Where the journal is scored but sound, the standard repair is grinding to a defined undersize with matching oversize shells rather than replacement. Fatigue cracking from sustained load is the failure that cannot be repaired at all, and a cracked shaft is condemned rather than reground. This number is also available remanufactured.

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

Engines this part fits