8LW25SG
The Wärtsilä 8LW25SG is an eight‑cylinder, medium‑speed (900–1000 rpm) 4‑stroke trunk piston engine delivering up to 1 360 kW, designed for dual‑fuel operation on diesel, LNG (spark‑ignited) and ammonia with native IMO Tier III compliance in LNG mode.
Engine Specifications
Components & Design
Component data being added…
Technical Data
🤖 Ask about this model
One free question — answered like a marine engineer. No account needed.
Common failures & inspection points
Inspect fuel pressure curves; regularly check high-pressure lines for leaks; fuel analysis (water path, particle path)
Monitor crankcase ventilation; check sump oil analysis (iron Fe, chromium Cr, base number BN); piston ring wear during regular sump inspection
Monitor turbocharger pressure ratio and exhaust gas temperatures; check scavenge air temperature after charger; periodic ultrasonic inspection or borescope if suspected
Inspect urea inventory and metering system; check SCR catalyst for wear/fouling; exhaust gas testing per IMO Tier III standards
Type-general inspection and maintenance points for this equipment category — not model-specific.
Suppliers & Spare Parts
Direct links to manufacturer, datasheet, spare-parts portal and dealers — request access below.
📄 Request sourcing links & documentsCases, daily reports, timesheets and AI troubleshooting in the OceanSphere Marine app — free for 14 days.
Start free trial →Find manufacturers, repair shops and spare-part dealers in the Maritime Network — our global company directory.
Maritime Network →