Cummins 6LTAA8.9-M315 230KW 315HP Marine Diesel Engine
Cummins 6LTAA8.9-M315 6-cylinder in-line diesel engine rated 230 kW (315 HP) at 253 kW/344HP @ 2200 rpm with 8.3 L displacement for propulsion and auxiliary duty on workboats, fishing vessels, tugs and barges.
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What This Engine Is Built For
The Cummins 6LTAA8.9-M315 is a 6-cylinder in-line marine diesel engine of 8.3 L with a 102*120 mm bore and stroke supplied by MEP Power as a complete assembly. It is rated at 230 kW (315 HP) at 253 kW/344HP @ 2200 rpm and develops 1350 N.m @ 1400 rpm. The engine is turbocharged/air-air cooled, with a Bosch P7100 Pump/RQV-K Governor fuel system. It carries CCS Certificates. Typical duty is propulsion and auxiliary duty on workboats, fishing vessels, tugs and barges and the overall envelope is 1500* 900* 1200 mm, G.W: 800 KG.
Key Benefits
- Delivers 230 kW (315 HP) at 253 kW/344HP @ 2200 rpm from 8.3 L as a factory-rated assembly.
- Peak torque of 1350 N.m @ 1400 rpm holds the load without downshifting or derating.
- Turbocharged/Air-air Cooled induction keeps charge temperature under control in continuous duty.
- Supplied to CCS Certificates, so the unit can be registered in markets that require it.
- Envelope 1500* 900* 1200 mm, G.W: 800 KG are published so the installation can be checked before ordering.
- Published fuel consumption of ≤ 64 L/hr 6LTAA8.9-M315 makes running cost predictable.
Application Scenarios
- Main propulsion in a steel workboat
- Auxiliary and deck machinery drive
- Fishing vessel repower
- Harbour tug and pilot boat service
Who It Is For
- Shipyards repowering workboats and fishing vessels
- Boat owners replacing a worn main engine without changing the engine bed
- Marine service yards that keep exchange engines on the shelf
- Fleet operators standardising on one Cummins family across several hulls
Problems It Solves
- A vessel out of service earns nothing, and a mismatched replacement engine means new mounts, new couplings and weeks of yard time.
- Marine duty punishes engines that were never cooled for sea water service.
- Spare parts for grey-import engines are hard to identify years later.
- Identifying the right 6LTAA8.9-M315 variant from a serial number takes experience; MEP Power checks the configuration before quoting.
Specification As Published
Values below are the published data for this unit. Where a figure is not listed it was not stated by the source data sheet; ask and we will confirm before you order.
| Rated Power/Speed | 230 kW/315HP @ 2134 rpm Max. Power/ |
| Rated Speed | 253 kW/344HP @ 2200 rpm |
| Max Torque/Speed | 1350 N.m @ 1400 rpm |
| Torque/Rated Speed | 1100 N.m @ 2134 rpm |
| Low Idle Speed | 600-800 rpm |
| High Idle Speed | 2430 rpm |
| Fuel Consumption (running speed) | ≤ 64 L/hr 6LTAA8.9-M315 |
| Certification | CCS Certificates |
| Aspiration | Turbocharged/Air-air Cooled |
| Fuel System | Bosch P7100 Pump/RQV-K Governor |
| Starting System | Electrical Start (12V/24V) |
| Governor Type | Mechanical Control |
| Compression Ratio | 16.6:1 |
| Engine Cooling Fluid Volume | 11.1 L |
| Lowest Starting Temp (without auxiliary system) | -12℃ |
| Rated Power | 230 kW (315HP) |
| Overall Dimension | 1500* 900* 1200 mm, G.W: 800 KG |
| Engine Model | Cummins 6LTAA8.9-M315 230KW 315HP Marine Diesel Engine |
| Cylinders | 6 Cylinders in-line |
| Prime Power | 138 kW/188HP |
| Bore x Stroke | 102*120 |
| Displacement | 8.3 L |
Technical Features
- Displacement: 8.3 L
- Bore and stroke: 102*120
- Aspiration: Turbocharged/Air-air Cooled
- Fuel system: Bosch P7100 Pump/RQV-K Governor
- Governor: Mechanical Control
- Starting system: Electrical Start (12V/24V)
- Compression ratio: 16.6:1
- Coolant capacity: 11.1 L
Quality Control
- Every engine is inspected by the MEP Power inspection team before it leaves the warehouse
- Engine, configuration and serial numbers are recorded and photographed for the buyer
- Genuine and OEM units are quoted separately so the buyer knows exactly what is supplied
- Warranty on genuine and OEM new engines and generator sets is one year or 1000 hours, whichever comes first; parts and repair labour are covered for quality faults inside that period.
Use and Installation Guide
- Quote the model 6LTAA8.9-M315 when ordering so the correct variant is supplied.
- Check the gearbox reduction ratio and propeller match before ordering
- Confirm raw-water or keel cooling to suit the hull
- Commission with the exhaust system and sea water pump connected as supplied
- Keep the warranty terms in mind: one year or 1000 hours, whichever comes first.
Customisation Options
- OEM and ODM builds, including your logo and company name on the unit
- Cummins engine customisation and modification to your requirement
- Mining and special explosion-proof builds
- Genuine or OEM parts specified on the quotation
How It Compares
| Compared with | What to consider |
|---|---|
| A rebuilt or used engine of the same rating | A rebuilt unit may show the same 230 kW (315 HP) on paper, but its running history is unknown and the warranty rarely covers the whole engine. |
| A larger engine in the same 6LTAA8.9 range | Moving up a frame size adds weight, envelope and fuel burn; specify the next size up only if the duty cycle really needs the headroom. |
| A non-Cummins engine of similar output | Parts and service for Cummins families are available in most markets, which matters more over ten years than the purchase price on day one. |
6LTAA8.9-M315 Questions
Is this 6LTAA8.9-M315 a genuine Cummins engine
What power does the 6LTAA8.9-M315 produce
What warranty comes with the engine
How do I confirm this is the right variant for my machine
How is the engine shipped and what payment terms apply
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Quote The 6LTAA8.9-M315
Send your serial number or nameplate photograph and we will confirm the configuration, then price genuine and OEM options side by side.