Sulzer · Main Engine

Sulzer RTA72U-B Spare Parts

Genuine and Alang-reconditioned spare parts for the Sulzer RTA72U-B two-stroke crosshead marine diesel engine — suezmax tankers, panamax/post-panamax container ships, capesize bulkers. Shipped from Bhavnagar, India to any port worldwide.

Parameter	RTA72U-B
Maker	Sulzer
Model	RTA72U-B
Equipment	Two-stroke crosshead marine diesel engine
Bore	720 mm
Stroke	2,500 mm
Cylinders	4-8 cylinders inline (max 8)
Power	1,410-2,570 kW/cyl (RTA72U-B at 3,080 kW/cyl at R1; 6RTA72U-6 listed at 17,339 HP)
Speed at MCR	66-99 rpm (range across ratings)
Status	OBSOLETE — superseded by RT-flex72/RTA-flex
Production years	1986 (first engine 1988 by 3.MAJ) to mid 2000s
Application	Suezmax tankers, Panamax/Post-Panamax container ships, Capesize bulkers

Figures as published for the RTA72U-B. 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.

RTA72U-B Spare Parts We Supply

Cylinder liner
Piston crown
Piston skirt
Piston rod
Piston rings
Cylinder cover
Exhaust valve spindle, seat and cage
Fuel injection pump
Fuel valve / injector
Starting air valve
Stuffing box
Main, crosshead and crankpin bearings
Thrust bearing
Cylinder lubricator quills
Turbocharger rotor and nozzle ring

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 Sulzer items are sourceable through the yard.

About the Sulzer RTA72U-B

The Sulzer RTA72U-B is a two-stroke crosshead marine diesel engine. It runs a 720 mm bore and 2,500 mm stroke. Status: OBSOLETE — superseded by RT-flex72/RTA-flex. Built 1986 (first engine 1988 by 3.MAJ) to mid 2000s. Application: Suezmax tankers, Panamax/Post-Panamax container ships, Capesize bulkers

Source: our Main Engine spec research file (main-engine/03-sulzer.md).

Why Source RTA72U-B 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

View All Sulzer Models

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Frequently Asked Questions

What Sulzer RTA72U-B spare parts do you supply?

Genuine, OEM-equivalent and Alang-reconditioned parts for the RTA72U-B, including cylinder liner, piston crown, piston skirt, piston rod, piston rings. Send the part number for anything not listed.

What is the delivery time for RTA72U-B 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 RTA72U-B 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 RTA72U-B parts?

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

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