Wärtsilä · Main Engine

Wärtsilä Wärtsilä 31 Spare Parts

Genuine and Alang-reconditioned spare parts for the Wärtsilä Wärtsilä 31 four-stroke marine diesel engine — auxiliary genset (most common application — ~500–2,000 kwe per set) on container ships, tankers, bulkers, cruise vessels, ferries; main propulsion on small ferries, osvs, tugs, fishing vessels. Shipped from Bhavnagar, India to any port worldwide.

Parameter	Wärtsilä 31
Maker	Wärtsilä
Model	Wärtsilä 31
Equipment	Four-stroke marine diesel engine
Bore	200 mm
Stroke	280 mm
Configuration	In-line 4L, 6L, 8L, 9L (DF version: 6L, 8L, 9L)
Power	740–1,980 kW (diesel); 870–1,755 kW (20DF)
Speed	900 / 1,000 / 1,200 rpm
MEP	~24–27 bar
SFOC	~190–198 g/kWh on MDO at full load
Fuel	LFO / HFO / liquid biofuel (20 diesel); LNG + diesel pilot (20DF)
Status	🟢 Current (over 7,500 engines delivered since early 1990s)
Production years	1993–present
Application	Auxiliary genset (most common application — ~500–2,000 kWe per set) on container ships, tankers, bulkers, cruise vessels

Figures as published for the Wärtsilä 31. Where a figure is not in a source we hold, this page says “not published to us” rather than estimating it. Send your equipment and part number and we confirm against the nameplate before quoting.

Wärtsilä 31 Spare Parts We Supply

Cylinder liner
Cylinder head (complete)
Piston crown and skirt
Piston rings
Inlet and exhaust valves
Valve seats and guides
Fuel injection pump
Fuel injector / nozzle
Connecting rod and big-end bearing
Main bearings
Camshaft and cam followers
Turbocharger cartridge
Charge-air cooler element
Governor / actuator

Genuine, OEM-equivalent and Alang-reconditioned. Every reconditioned part is measured against the maker’s limits before it leaves us. If your part is not listed, send the part number — most Wärtsilä items are sourceable through the yard.

About the Wärtsilä Wärtsilä 31

The Wärtsilä Wärtsilä 31 is a four-stroke marine diesel engine. It runs a 200 mm bore and 280 mm stroke. Status: 🟢 Current (over 7,500 engines delivered since early 1990s). Built 1993–present. Application: Auxiliary genset (most common application — ~500–2,000 kWe per set) on container ships, tankers, bulkers, cruise vessels, ferries; main propulsion on small ferries, OSVs, tugs, fishing vessels

Source: our Main Engine spec research file (auxiliary-engine/01-cat-daihatsu-wartsila4stroke.md).

Why Source Wärtsilä 31 Parts from Wattmare?

We are in Bhavnagar, next to Alang — the world’s largest ship-recycling yard, and where reconditioned marine parts actually come from. We hold fast-moving items, source the rest through the yard and our trader network, and dispatch worldwide in 24–48 hours on emergency orders.

Salim Dholia
Wattmare · Bhavnagar / Alang, India

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Frequently Asked Questions

What Wärtsilä Wärtsilä 31 spare parts do you supply?

Genuine, OEM-equivalent and Alang-reconditioned parts for the Wärtsilä 31, including cylinder liner, cylinder head (complete), piston crown and skirt, piston rings, inlet and exhaust valves. Send the part number for anything not listed.

What is the delivery time for Wärtsilä 31 parts?

Stock items dispatch the same or next working day from Bhavnagar. Emergency orders ship in 24–48 hours to any major port. Sourced items depend on the yard — we confirm a real date before you commit.

Are your Wärtsilä 31 parts genuine or reconditioned?

Both. We supply genuine and OEM-equivalent new parts, and Alang-reconditioned parts measured against the maker's limits before dispatch. We tell you which you are buying — we do not sell reconditioned as new.

Need Wärtsilä 31 parts?

Send the equipment number and part number. We quote with a real availability date, not a maybe.

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