MAN Camshaft 51044006021

About this part

Genuine MAN camshaft for the D2842 LE6 builds, the 21.9-litre V12. On this generation the camshaft does two jobs through one gear train: it opens and closes the valves, and it drives the injection pump. That coupling is the reason camshaft wear is not simply a valvetrain problem — as lobe profiles erode and backlash accumulates in the drive, the point at which injection begins moves with them, and the engine loses timing accuracy before it loses breathing. The symptoms arrive in an unhelpful order: harder starting, a change in smoke, a small loss of power, all of which invite a fuel-system diagnosis. A metallic clicking or rattling from the front of the engine near the timing cover is the more specific sign, and it tends to appear later than the performance changes. Where a camshaft is suspected, measure lobe lift against specification rather than judging by eye.

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

Engines this part fits