"> Caterpillar MaK 6L M25E
OceanSphere
Engines
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Caterpillar MaK

6L M25E

The Caterpillar MaK 6L M25E is a medium‑speed, inline‑six, four‑stroke diesel main engine delivering roughly 1 800–2 000 kW at 720–750 rpm, notable for its common‑rail electronic injection and IMO Tier III NOx compliance.

Caterpillar MaK 6L M25E
2040.0 kW
Power

Engine Specifications

6
Cylinders
255 mm
Bore
400 mm
Stroke

Components & Design

Component data being added…

Technical Data

Hubvolumen (6M25) 122 Liter / 122000 cc
Spezifischer Brennstoffverbrauch (SFOC) 183-184 g/kW
Zylinderzahl 6, 8 or 9 inline cylinders
Kurbelwellendrehzahl 720-750 U/min
Zylinderleistung 300-333 kW per cylinder
Bauart 4-Takt Diesel-Langhuber mit Turbolader (SCR-Ausfuehrung verfuegbar)
Komponentenreduktion ca. 40% weniger Komponenten als Vorgaengerserie
configuration L
rpm 720
fuel type HFO/MGO/Biofuel
technology Common Rail Electronic (Tier III)
displacement l per cyl 20.4

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Common failures & inspection points

Cylinder liner wear and overheating

Inspect cylinder liner for wear and cracks; cooling system function check

Piston ring wear and carbonization (carbon deposits)

Rauchentwicklung beobachten; Kolbenkraft-Messung; Kompressionspruefung

Fuel injector fouling and fuel carbon

Einspritzdruck / Sprayform pruefung; Brennstoff-Filterbestand; Brennstoffpolitur ggf. notwendig

Turbocharger damage from high exhaust backpressure

Abgasdruck-Messung; Verdichter/Turbinen-Sichtpruefung; OEM-spezifische Oelwechsel-Intervalle beachten

Valve timing problems and inlet/outlet valve deposits

Ventilspiel + Ventilsitz-Verschlei pruefung; Einlass/Auslassventil-Reinigung; Dichtsitzpruefung

Type-general inspection and maintenance points for this equipment category — not model-specific.

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Equipment Model #66522 · ✓ still in production