Caterpillar · Auxiliary Engine

Caterpillar 3412 Spare Parts

Genuine and Alang-reconditioned spare parts for the Caterpillar 3412 four-stroke marine diesel engine — yachts, fast supply vessels, fishing trawlers, tugs, harbour pilot boats, offshore supply boats, marine gensets up to ~750 kwe. Shipped from Bhavnagar, India to any port worldwide.

Bhavnagar · beside Alang yard
24–48hr emergency dispatch
Genuine · OEM-equivalent · reconditioned
Measured to maker’s limits

Parameter	3412
Maker	Caterpillar
Model	3412
Equipment	Four-stroke marine diesel engine
Bore	137 mm (5.4 in)
Stroke	152 mm (6.0 in)
Power output	522–1,007 kW (700–1,350 bhp) — most marine ratings 700–1,050 bhp
Speed	1,800–2,300 rpm
Production status	Legacy (aftermarket-supported) (3412C/E marine still serviced, very common on yachts, tugs, OSVs)
Production years	1981–2008
Application	Yachts, fast supply vessels, fishing trawlers, tugs, harbour pilot boats, offshore supply boats, marine gensets up to ~7

Figures as published for the 3412. We confirm against the nameplate before quoting.

3412 Spare Parts We Supply

Cylinder liner
Cylinder head complete
Cylinder head gasket set
Piston complete
Piston crown and skirt
Piston rings
Gudgeon pin and bush
Connecting rod
Big-end bearing shells
Main bearing shells
Thrust washers
Camshaft and cam sections
Cam followers / roller guides
Inlet valve with seat and guide
Exhaust valve with seat and guide
Valve rotators and springs
Rocker arm assembly
Push rods
Fuel injection pump
Fuel pump element (plunger and barrel)
Fuel injector and nozzle
High-pressure fuel pipe
Lube oil pump
Water pump (HT/LT)
Turbocharger cartridge
Charge-air cooler element
Governor drive and linkage
Complete gasket and O-ring kit

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 Caterpillar items are sourceable through the yard.

About the Caterpillar 3412

The Caterpillar 3412 is a four-stroke marine diesel engine. It runs a 137 mm (5.4 in) bore and 152 mm (6.0 in) stroke. Status: Legacy (aftermarket-supported) (3412C/E marine still serviced, very common on yachts, tugs, OSVs). Built 1981–2008. Application: Yachts, fast supply vessels, fishing trawlers, tugs, harbour pilot boats, offshore supply boats, marine gensets up to ~750 kWe

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

Why Source 3412 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 Caterpillar 3412 spare parts do you supply?

Genuine, OEM-equivalent and Alang-reconditioned parts for the 3412, including cylinder liner, cylinder head complete, cylinder head gasket set, piston complete, piston crown and skirt, piston rings. Send the part number for anything not listed.

What is the delivery time for 3412 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 3412 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 3412 parts?

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

WhatsApp for a quote Call +91 98252 08105