OceanSphere
Engines
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Caterpillar MaK

9L M25C

MAK/Caterpillar Marine M-series 4-stroke medium-speed engines. Used as both propulsion and auxiliary in various vessel types.

3060.0 kW
Power

Engine Specifications

9
Cylinders
255 mm
Bore
400 mm
Stroke
3,060 kW
MCR Power
720.0 rpm
MCR RPM
4-stroke
Stroke Type
Family: Caterpillar/MAK M20C/M25C/M32C/M43C · Tier: IMO Tier II · Fuel: HFO, MDO, MGO

Other Cylinder Configurations 35

4L20
4 cyl · 800 kW
6L M20C
6 cyl · 1,110 kW
6L M25C
6 cyl · 2,040 kW
6L M32C
6 cyl · 3,360 kW
6L20
6 cyl · 1,200 kW
6L32
6 cyl · 3,480 kW
6M M43C
6 cyl · 6,060 kW
6M M46DF
6 cyl · 6,600 kW
Cat C280-6
6 cyl · 2,100 kW
8L M20C
8 cyl · 1,480 kW
8L M25C
8 cyl · 2,720 kW
8L M32C
8 cyl · 4,480 kW
8L20
8 cyl · 1,600 kW
8L32
8 cyl · 4,640 kW
8M M43C
8 cyl · 8,080 kW
8M M46DF
8 cyl · 8,800 kW
Cat 3508B
8 cyl · 560 kW
Cat C280-8
8 cyl · 2,800 kW
9L M20C
9 cyl · 1,665 kW
9L M32C
9 cyl · 5,040 kW
9L20
9 cyl · 1,800 kW
9L32
9 cyl · 5,220 kW
9M M43C
9 cyl · 9,090 kW
9M M46DF
9 cyl · 9,900 kW
12V M43C
12 cyl · 12,120 kW
12V M46DF
12 cyl · 13,200 kW
12V32
12 cyl · 6,960 kW
Cat 3512B
12 cyl · 840 kW
Cat 3512C
12 cyl · 895 kW
Cat C280-12
12 cyl · 4,200 kW
16V32
16 cyl · 9,280 kW
Cat 3516B
16 cyl · 1,120 kW
Cat 3516C
16 cyl · 1,200 kW
Cat 3516E
16 cyl · 1,305 kW
Cat C280-16
16 cyl · 5,600 kW

Components & Design

Component data being added…

Technical Data

Hubvolumen (6M25) 122 Liter / 122000 cc
Spezifischer Brennstoffverbrauch (SFOC) 183-184 g/kW
Zylinderzahl 6, 8 oder 9 inline-Zylinder
Kurbelwellendrehzahl 720-750 U/min
Zylinderleistung 300-333 kW pro Zylinder
Bauart 4-Takt Diesel-Langhuber mit Turbolader (SCR-Ausfuehrung verfuegbar)
Komponentenreduktion ca. 40% weniger Komponenten als Vorgaengerserie
unified from engine model True

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Common failures & inspection points

Zylinderliner Verschlei und Ueberheizung

Zylinderliner auf Verschlei und Risse inspizieren; Kuehlanlagenfunktion pruefung

Kolbenringverschlei und Verschwelung (carbon deposits)

Rauchentwicklung beobachten; Kolbenkraft-Messung; Kompressionspruefung

Brennstoffeinspritzer Verschmutzung und Brennstoff-Carbon

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

Turbolader Schaedigungen durch hohen Abgasgegendruck

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

Ventiltiming Probleme und Einlass/Auslassventil-Ablagerungen

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

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

Suppliers & Spare Parts

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Manuals

  • operating
    MaK M43C Operating Manual
  • maintenance
    MaK M43C Maintenance Manual
  • spare_parts
    MaK M43C Spare Parts Catalogue
Equipment Model #38073 · ✓ still in production