Sulzer · Main Engine

Sulzer RTA84T-B Spare Parts

Genuine and Alang-reconditioned spare parts for the Sulzer RTA84T-B two-stroke crosshead marine diesel engine — vlcc and ulcc crude tankers, large bulk carriers — long-stroke design for very high propulsive efficiency at low rpm. Shipped from Bhavnagar, India to any port worldwide.

Parameter	RTA84T-B
Maker	Sulzer
Model	RTA84T-B
Equipment	Two-stroke crosshead marine diesel engine
Bore	840 mm
Stroke	3,150 mm (T-B variant), often quoted as 2,950 mm (T variant) — confirmed S/B 3.75 for T design (gives ~3,150 mm)
Cylinders	5-8 cylinders inline (8RTA84T-B-8 listed at 29,181 HP / 21,460 kW)
Power	~2,680-2,900 kW/cyl
Speed at MCR	~57 rpm (R1, very slow-running for large-diameter propellers)
Status	OBSOLETE — superseded by RT-flex84T-D
Production years	1991 to mid 2000s
Application	VLCC and ULCC crude tankers, large bulk carriers — long-stroke design for very high propulsive efficiency at low rpm

Figures as published for the RTA84T-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.

RTA84T-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 RTA84T-B

The Sulzer RTA84T-B is a two-stroke crosshead marine diesel engine. It runs a 840 mm bore and 3,150 mm (T-B variant), often quoted as 2,950 mm (T variant) — confirmed S/B 3.75 for T design (gives ~3,150 mm) stroke. Status: OBSOLETE — superseded by RT-flex84T-D. Built 1991 to mid 2000s. Application: VLCC and ULCC crude tankers, large bulk carriers — long-stroke design for very high propulsive efficiency at low rpm

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

Why Source RTA84T-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

All Sulzer spare parts Main Engine spare parts Reconditioned parts Alang ship spares 24–48hr emergency

Frequently Asked Questions

What Sulzer RTA84T-B spare parts do you supply?

Genuine, OEM-equivalent and Alang-reconditioned parts for the RTA84T-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 RTA84T-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 RTA84T-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 RTA84T-B parts?

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

WhatsApp for a quote