What is the difference between MC and ME engines?

The MC series is mechanically controlled; the ME series electronically controls fuel injection and exhaust valve timing.

Why must plungers and barrels be supplied as a pair?

Their manufacturing clearances are matched; substituting an individual plunger causes direct fuel pump seizure.

How do I order the correct cylinder liner?

Quote the engine type and stroke and the plate number; cooling and lubrication grooving vary by revision.

MAN Energy Solutions (MAN B&W) Spares

also known as MAN B&W, MAN Diesel & Turbo

MAN Energy Solutions, whose two-stroke marine engines are universally known by the MAN B&W name, is the global leader in low-speed crosshead propulsion for merchant ships. The vast majority of large container ships, bulk carriers and tankers are propelled by a MAN B&W engine of the mechanically controlled MC series or the electronically controlled ME series. Spare-part demand concentrates on the combustion and running gear — cylinder liners, piston crowns, exhaust valves, fuel injection valves and the fuel pump plunger and barrel — because these are the components that wear, are renewed at scheduled overhauls, and must be matched precisely to the engine bore and revision. MAN identifies these parts by plate number, and sourcing the correct plate for the exact engine type and stroke is the difference between a clean overhaul and a liner-scuffing mismatch at sea. This hub indexes the high-demand MAN B&W spare families with their plate references and the technical cautions that govern their fitment.

MC and ME engine series

The MC series is mechanically controlled; the ME series adds electronic control of fuel injection and exhaust valve timing. Many spares are common across both, but fuel injection components and control parts diverge, so the engine designation and stroke must be confirmed.

Sourcing by plate number

MAN B&W parts are specified by plate number tied to the engine type (for example 6S60MC). Matched components such as the fuel pump plunger and barrel must be supplied as a pair to avoid pump seizure.

Series & families

MAN B&W S60MC main propulsion spares

Compliance

USCG & MED compliance

Frequently asked questions

What is the difference between MC and ME engines?: The MC series is mechanically controlled; the ME series electronically controls fuel injection and exhaust valve timing.
Why must plungers and barrels be supplied as a pair?: Their manufacturing clearances are matched; substituting an individual plunger causes direct fuel pump seizure.
How do I order the correct cylinder liner?: Quote the engine type and stroke and the plate number; cooling and lubrication grooving vary by revision.