Main Engine 4-Stroke · Main Engines (4-Stroke)
The MTU 16V4000 M73 is a medium‑speed, 16‑cylinder, four‑stroke diesel main engine delivering up to 2 880 kW at 1 800 rpm, known for its very high power‑to‑weight ratio and advanced common‑rail injection.
Do you have the manufacturer datasheet for this model? Send it with the enquiry form — we check it and name the source.
| Oil and filter change | typically every 500-1,000 hours or per maker's schedule for the applicable duty type |
|---|---|
| Injector inspection/exchange | typically every 6,000-8,000 hours - condition-based per maker's guidance |
| Turbocharger overhaul | typically every 8,000-12,000 hours or condition-based |
| Charge air cooler cleaning | typically every 2,000-4,000 hours depending on fouling rate |
| Major (top-end) overhaul | typically in the range of 12,000-16,000 hours for high-power-density engines of this class - confirm against the maker's duty-specific TBO |
Typical intervals for this design class, not the manufacturer’s figures for your model. The manufacturer’s manual is binding.
| Piston ring gap | typically 0.3-0.6 mm for this bore class - confirm against the engine's own manual |
|---|---|
| Cylinder liner wear (bore increase) | condition-based per maker's limit table; high-power-density engines of this class often have tighter limits than slower medium-speed engines - confirm before assuming a generic figure |
| Main/big-end bearing clearance | check against the maker's stated range in the engine's own instruction manual |
Ranges are typical for this design class. Always confirm against the manufacturer documentation for your serial number.
Typically surveyed under Continuous Survey Machinery where within the owner's CSM scope; class societies pay particular attention to the declared duty-cycle rating (continuous vs. intermittent materially changes the expected overhaul interval) and to documented condition monitoring supporting any interval extension.
Estimated lifetime: High-power-density medium-speed engines of this class are typically designed around duty-cycle-specific TBOs, commonly in the range of 12,000-24,000 hours to major overhaul depending on load factor and duty type (continuous, intermittent or standby) - confirm against the maker's rating-specific maintenance schedule for this application
Free of charge — send us your request for MTU equipment. Our team checks it and replies by e-mail.
Other models of the same equipment type, MTU first.
Tell us what you need for this MTU 16V 4000 M73 — a part, a service call, a second opinion. Are you MTU? Claim this brand page.
Service engineer? Write the day report for this 16V 4000 M73 in OceanSphere Work — photos, hours and parts, as a PDF for the owner. Try it free for 14 days →
Yes. Specifications, documents and service notes for this model are readable without an account. An account adds saved searches and requests, nothing is taken away.
Yes. Tell us the manufacturer, the model and what you need — a person reads every request and replies by e-mail.
Send us the nameplate or the correct value. We check it against the manufacturer datasheet or class-society record and update the page.