● 24–48 HR WORLDWIDE DISPATCH

Marine Auxiliary Engine Spare Parts

Genset spares.
In your port in 48 hours.

Genuine, OEM-equivalent and Alang-reconditioned heads, liners, pistons, bearings and injection parts for every marine auxiliary engine — Caterpillar, Daihatsu, MaK, Yanmar, Bergen and HiMSEN. Shipped worldwide from Bhavnagar beside the world's largest ship-recycling yard.

WhatsApp for a quote Browse auxiliary engine brands

CaterpillarDaihatsuMaKYanmarBergenHiMSENMANMitsubishi

Salim Dholia

Founder, Wattmare · marine spare parts sourced at Alang, Bhavnagar

Reviewed & updated18 July 2026

Auxiliary Engine makes

48hr

Emergency dispatch

20+

Countries served

98%

On-time delivery

— Overview

The ship's power, kept running from Alang.

Wattmare supplies spare parts for marine auxiliary engines — the medium and high-speed four-stroke gensets that make a vessel's electrical power. Cylinder heads, liners, bearings and injection equipment are the parts that wear. We hold them genuine, OEM-equivalent and reconditioned for all major makes and dispatch worldwide in 24–48 hours.

Gensets run almost continuously, so their heads, rings and injectors are consumed steadily — and a vessel short of generator capacity is a vessel in trouble. Auxiliary-engine parts are Wattmare's most defensible niche: from our base beside Alang we continuously harvest and recondition crankshafts, liners, heads and connecting rods from scrapped vessels — measured, crack-tested and re-machined — often the only source for obsolete sets.

For recovered parts from ships dismantled at Alang, see our reconditioned marine spare parts; for a genset down with a vessel to move, our emergency desk dispatches in 24–48 hours; and for the full story, our Alang ship spare parts guide.

How Alang reconditioning works

Caterpillar marine auxiliary engine — genuine and reconditioned spare parts

01 / NINE AUXILIARY ENGINE BRANDS

Caterpillar spare parts

The world's most widespread marine genset engine. The medium-speed 3500 series (3508, 3512, 3516) is the merchant-fleet workhorse; the 3400 series (3406, 3408, 3412) and modern C-Series (C18, C32) cover smaller sets; and the 3600 and C175 serve larger plants. We hold heads, liners, pistons, bearings and injection parts for all of them.

Type

Medium / high-speed 4-stroke

Genset

3500 · 3400 · C-Series

Medium-speed

3600 · C175

Status

Current + legacy

3508351235163406C18C32

View Caterpillar parts

Daihatsu marine auxiliary engine — genuine and reconditioned spare parts

02 / NINE AUXILIARY ENGINE BRANDS

Daihatsu spare parts

Japan's leading marine auxiliary-engine maker, standard on Japanese-built ships. The medium-speed DK series (DK-20, DK-26, DK-28, DK-32, DK-36) and the legacy DC series drive gensets across the fleet. We supply cylinder heads, liners, pistons, rings, bearings and fuel-injection parts for the whole range, current and legacy.

Type

Medium-speed 4-stroke

Current

DK-20 · DK-26 · DK-28

Larger

DK-32 · DK-36

Legacy

DC series

6DK-206DK-266DK-288DK-28DK-32DK-20e

View Daihatsu parts

MaK marine auxiliary engine — genuine and reconditioned spare parts

03 / NINE AUXILIARY ENGINE BRANDS

MaK spare parts

MaK (now Caterpillar's medium-speed marine brand) — rugged four-stroke engines fitted as both gensets and propulsion. The M20C, M25 and M32 (inline and VM V-engines) and the large M43 run on heavy fuel, with a substantial legacy base of M453 / M551 / M601 sets. We supply heads, liners, pistons, bearings and injection parts.

Type

Medium-speed 4-stroke

Current

M20C · M25 · M32

Large / V

M43 · VM32 · VM43

Legacy

M453 · M551 · M601

M20CM25CM32CM43C6M32CVM43C

View MaK parts

Yanmar marine auxiliary engine — genuine and reconditioned spare parts

04 / NINE AUXILIARY ENGINE BRANDS

Yanmar spare parts

A major marine auxiliary maker, common on Japanese and Asian-built vessels. The medium-speed N series (6N18, 6N21, 6N280, 6N330) and the EY series (6EY18, 6EY22, 6EY26) run as generator and propulsion sets, alongside a legacy MAL / AY base. We hold heads, liners, pistons, bearings and fuel-injection parts.

Type

Medium-speed 4-stroke

Generator

6N18 · 6N21 · 6EY

Larger

6N280 · 6N330

Legacy

MAL · AY series

6N18L6N21L6N2806N3306EY22L6EY26

View Yanmar parts

Bergen marine auxiliary engine — genuine and reconditioned spare parts

05 / NINE AUXILIARY ENGINE BRANDS

Bergen spare parts

Bergen (Norway — now part of the MAN/Everllence family) builds robust medium-speed four-stroke engines for gensets and propulsion. The current B32:40 and B33:45 (inline and V) and the compact C25:33 / C26:33 run on heavy fuel and gas, with a large legacy KRM / KRG / KVM base still in service. We supply heads, liners, pistons, bearings and injection parts.

Type

Medium-speed 4-stroke

Current

B32:40 · B33:45

Compact

C25:33 · C26:33

Legacy

KRM · KRG · KVM

B32:40LB32:40VB33:45LC26:33LC25:33LKVGB

View Bergen parts

HiMSEN marine auxiliary engine — genuine and reconditioned spare parts

06 / NINE AUXILIARY ENGINE BRANDS

HiMSEN spare parts

HiMSEN — Hyundai's own four-stroke engine (HD Hyundai Engine Solutions) — is now one of the most common gensets on new-build ships. The H17/28, H21/32, H25/33 and H32/40 (with dual-fuel DF variants) run as auxiliary and propulsion sets across the modern fleet. We supply cylinder heads, liners, pistons, bearings and fuel-injection parts.

Type

Medium-speed 4-stroke

Genset

H21/32 · H25/33

Range

H17/28 – H32/40

Dual-fuel

H21/32DF · H25/33DF

H17/28H21/32H25/33H32/40H21/32DFH25/33DF

View HiMSEN parts

MAN marine auxiliary engine — genuine and reconditioned spare parts

07 / NINE AUXILIARY ENGINE BRANDS

MAN spare parts

MAN's L-series is a family of four-stroke, medium-speed marine generating-set engines (MAN Energy Solutions / Everllence) — distinct from the MAN B&W two-stroke main engines. The designation encodes bore × stroke: L23/30H is 230 × 300 mm, L28/32H is 280 × 320 mm. The range runs from the L16/24 to the L28/32H, including dual-fuel. We supply heads, liners, pistons, bearings and injection parts.

Type

Medium-speed 4-stroke GenSet

Range

L16/24 – L28/32H

Bore

160–280 mm

Maker

MAN / Everllence

L16/24L21/31L23/30HL27/38L28/32HL23/30DF

View MAN GenSet parts

Mitsubishi marine auxiliary engine — genuine and reconditioned spare parts

08 / NINE AUXILIARY ENGINE BRANDS

Mitsubishi spare parts

Mitsubishi Heavy Industries builds four-stroke marine genset engines in the high-speed S-series (S6R, S12R, S16R and their R2 updates), with generator-rated units carrying -MPTK / -MPTA suffixes, covering roughly 220 kW to 2 MW. They are common on Asian-built vessels and as emergency and harbour gensets. We supply heads, liners, pistons, bearings and fuel-injection parts.

Type

High-speed 4-stroke GenSet

Series

S6R · S12R · S16R

Output

~220 kW – 2 MW

Maker

Mitsubishi (MHI)

S6RS6R2S12RS16RS16R2S12A2

View Mitsubishi GenSet parts

Measured to the wear limits

Every part, restored to duty.

An auxiliary-engine head and running gear — pressure-tested, valves and seats re-cut, liners and journals measured to the wear limits, rings and bearings renewed, then run and load-tested.

Reconditioned marine auxiliary engine cylinder head — pressure-tested, valves re-cut

One engine, held to the drawing. Measured, crack-tested, re-machined, load-tested — the same standard across every head, liner, bearing and injector we dispatch.

Find your part

Tell us the auxiliary engine — get a quote.

Pick the make, add the model and the part you need. We check stock and our Alang-sourced pool and reply, usually the same day. For a vessel down, this goes straight to our emergency desk.

💬 Have the nameplate? A photo of the auxiliary engine plate + part is the fastest quote.

Auxiliary Engine brand Model / frame no. (e.g. 3512C, 6DK-28, M32C, H21/32) Part needed Details / part number (optional) Get my quote on WhatsApp

What we supply

Every auxiliary-engine wear part.

The parts that wear on a marine genset engine — held genuine, OEM-equivalent and Alang-reconditioned at our Bhavnagar facility, ready for 24–48 hour worldwide dispatch.

Complete

Cylinder head assembly

Complete cylinder heads with valves, seats, guides and springs — the top-overhaul item on a genset.

Per unit

Piston & rings

Pistons, compression and oil-control rings and gudgeon pins, sized to the liner.

Wet liner

Cylinder liner

Wet cylinder liners, honed and matched to the engine and piston.

Big-end

Connecting rod & bearings

Con-rods with big-end and main bearing shells.

Bottom end

Main & thrust bearings

Main bearings, thrust pads and bearing-cap studs.

Injector & pump

Fuel injection

Fuel injectors, high-pressure fuel pumps (jerk or common-rail) and nozzles.

Valve gear

Inlet & exhaust valves

Inlet and exhaust valves, seats, guides, rotators and springs.

Timing

Camshaft & followers

Camshaft sections, cam followers, rollers and push-rods.

Air charging

Turbocharger parts

Cartridges, bearings and seals for the genset's turbocharger.

Speed control

Governor & actuator

Woodward / Regulateurs governors and electronic actuators for the set.

Overhaul

Gasket & seal set

The complete cylinder-head, cooler and crankcase gasket and O-ring kit.

Auxiliaries

Cooler & pump parts

Lube-oil and jacket-water cooler parts, water pumps and their seals.

Marine engineers servicing ship machinery in a ship engine room

Marine engineers, not a parts desk

Quoted by people who know this equipment.

Every enquiry is handled by engineers who work on marine auxiliary engines every day — so the part you're quoted is correctly specified for your exact model and frame, the first time. For a vessel down, that expertise is on your WhatsApp within the hour.

Talk to an engineer

Buyer's guide

How to order the right auxiliary engine part.

Six steps from a worn component to the correct part crated for your vessel — the workflow our desk uses on every enquiry.

Identify the unit

Read the nameplate on the auxiliary engine or in the ship's papers — maker, series and frame number. Licence-built units use the identical OEM nomenclature, so the plate never limits sourcing.

Pin the exact part

Give the OEM part number if you have it, or a clear name plus key measurements. A nameplate photo and a photo of the worn part are the fastest route to a firm quote.

Choose the grade

Match provenance to criticality — Alang-reconditioned for high-wear and legacy items, OEM-equivalent for consumables, genuine for class-critical parts. All three meet the maker's tolerances.

Confirm class needs

Tell us the vessel's classification society if the part must be presented for survey — we supply maker/material certificates on new parts and measurement/NDT reports on reconditioned parts.

Plan the lead time

Planned-maintenance orders ship on schedule; for a breakdown our emergency desk dispatches in 24–48 hours to any major port.

Get a firm quote

Send it all on WhatsApp. We check stock and our Alang-sourced pool, confirm condition and price, and reply — usually the same day.

Auxiliary engine range

The makes we cover, at a glance.

Series-level coverage across the six leading marine auxiliary-engine makers — current and legacy. Send the engine model and cylinder number and we match heads, liners, pistons, bearings and injection parts exactly.

Marine auxiliary (genset) engine makers, series and type supplied by Wattmare
Maker	Series	Type	Status
Caterpillar	3500 · 3400 · C18/C32 · 3600 · C175	Medium / high-speed 4-stroke	Current + legacy
Daihatsu	DK-20/26/28/32/36 · DC	Medium-speed 4-stroke	Current + legacy
MaK	M20C · M25 · M32 · M43 · VM32/43	Medium-speed 4-stroke	Current + legacy
Yanmar	6N18 · 6N21 · 6N280/330 · 6EY	Medium-speed 4-stroke	Current + legacy
Bergen	B32:40 · B33:45 · C25:33 · KRM/KRG	Medium-speed 4-stroke	Current + legacy
HiMSEN	H17/28 · H21/32 · H25/33 · H32/40	Medium-speed 4-stroke	Current

Genuine · OEM-equivalent · Reconditioned

Three grades, one standard of fit.

Every auxiliary engine part we supply meets the maker's dimensional tolerances — the difference is provenance, documentation and cost. We help you match the grade to the criticality of the job.

Genuine OEM

Made by the original auxiliary engine maker or its licensed builders, with full OEM traceability and maker certificates.

Highest assurance

Best for
Critical / class-required items

OEM-equivalent

Manufactured to the same drawings, materials and tolerances by specialist suppliers — at lower cost.

Same fit, lower cost

Best for
High-wear consumables

Reconditioned · Alang

Genuine auxiliary engine components recovered from decommissioned units and restored to within OEM limits, with an NDT report.

30–60% below new

Best for
Legacy & obsolete units

Marine part being measured with precision gauges in a reconditioning workshop

Alang reconditioning

Gensets,
recovered and rebuilt.

Auxiliary engines are Wattmare's core reconditioning niche. We harvest crankshafts, liners, heads and rods from scrapped ships at Alang, measure and crack-test them, re-machine to the maker's limits and run- and load-test every rebuilt set before it ships.

How Alang reconditioning works

Step 1

Strip the engine

The engine is dismantled and every head, liner, piston, rod and bearing laid out for inspection.

Step 2

Measure liners & crank

Liners, journals and the crankshaft are measured against the maker's wear limits.

Step 3

Recondition the heads

Cylinder heads are pressure-tested, valves and seats re-cut, and guides renewed.

Step 4

Renew rings, bearings, valves

Piston rings, big-end and main bearings and the valve gear are renewed to spec.

Step 5

Reassemble to clearance

The engine is rebuilt to the maker's clearances with a new gasket and seal set.

Step 6

Run & load-test

The set is run and load-tested, and ships with a report and traceable batch tags.

Overhaul & inspection

When each auxiliary-engine part is due.

A ship's gensets run almost continuously, so heads, rings and injection equipment are the turnover spares. This is the usual overhaul rhythm, what we inspect and the typical action.

Typical marine auxiliary engine inspection and overhaul actions
Component	Typical interval	What we inspect	Typical action
Cylinder heads	Top overhaul (~12–18k hr)	Valve/seat wear, cracks	Recondition / renew
Piston rings	Top overhaul	Wear, blow-by	Renew the rings
Cylinder liner	Major overhaul	Wear, glaze	Renew the liner
Big-end / main bearings	Major overhaul	Clearance	Renew shells
Fuel injectors	6,000–8,000 hr	Spray, leak-off	Recondition / renew
Turbocharger	Major overhaul	Fouling, bearings	Recondition cartridge
Gasket / seal kit	Every overhaul	All seals	Renew the kit

Engine speed

High-speed or medium-speed genset?

Marine auxiliary engines split into high-speed and medium-speed. Which you run changes the fuel, the overhaul interval and the size of the parts. We cover both across all six makes.

High-speed versus medium-speed marine auxiliary engines
Aspect	High-speed (C18/C32, 6N18)	Medium-speed (3500/M32/B32:40)
Speed	1200–1800 rpm	400–900 rpm
Fuel	MDO / MGO	Heavy-fuel capable
Typical	Smaller vessels, emergency sets	Main gensets on merchant ships
Bore	Smaller	Larger
Overhaul	More frequent, cheaper parts	Longer intervals, larger parts

Reconditioned marine spare parts crated and labelled for global export in a warehouse

Enquiry → 48-hour delivery

From your nameplate to your deck.

A single WhatsApp gets a vessel-down enquiry moving. Here is the path from your first message to the part in your engineer's hands.

Send your enquiry

Share the auxiliary engine make, model / frame number and the part — a nameplate photo or OEM part number is ideal. WhatsApp is fastest for a vessel down.

We locate & quote

We check stock and our Alang-sourced pool, confirm condition (genuine / OEM-equivalent / reconditioned) and send a firm quote, usually the same day.

Inspect & document

The part is measured, crack-tested where required and tagged with its model and traceable batch, with an NDT/measurement report.

Dispatch in 24–48 hr

We ship to your port worldwide and coordinate with the local agent for customs clearance and last-mile delivery to the vessel.

Class & documentation

Survey-ready parts for every IACS society.

Genuine and OEM-equivalent parts ship with maker and material certificates; reconditioned parts carry measurement and NDT reports so the attending surveyor can accept them. Our auxiliary engine parts suit units classed with all major societies.

DNVLloyd's RegisterABSBureau VeritasClassNKRINACCSKR

— Where we deliver

Auxiliary Engine parts, to every major port.

We dispatch worldwide from India and coordinate delivery through local port agents. Explore our supply into the regions where our customers trade.

20+ countries50+ ports24–48 hr dispatch

India

Bhavnagar · Mumbai · Chennai · Kandla

We dispatch marine auxiliary engine spares from Bhavnagar, beside the Alang ship-recycling yard, to India through local port agents — genuine, OEM-equivalent and Alang-reconditioned, landed in 24–48 hours.

Auxiliary Engine parts in India

UAE & Gulf

Jebel Ali · Fujairah · Khor Fakkan

We dispatch marine auxiliary engine spares from Bhavnagar, beside the Alang ship-recycling yard, to UAE and Gulf through local port agents — genuine, OEM-equivalent and Alang-reconditioned, landed in 24–48 hours.

Auxiliary Engine parts in UAE & Gulf

Singapore

Singapore · Jurong · SE Asia

We dispatch marine auxiliary engine spares from Bhavnagar, beside the Alang ship-recycling yard, to Singapore through local port agents — genuine, OEM-equivalent and Alang-reconditioned, landed in 24–48 hours.

Auxiliary Engine parts in Singapore

Greece

Piraeus · Thessaloniki

We dispatch marine auxiliary engine spares from Bhavnagar, beside the Alang ship-recycling yard, to Greece through local port agents — genuine, OEM-equivalent and Alang-reconditioned, landed in 24–48 hours.

Auxiliary Engine parts in Greece

Egypt

Port Said · Suez · Alexandria

We dispatch marine auxiliary engine spares from Bhavnagar, beside the Alang ship-recycling yard, to Egypt through local port agents — genuine, OEM-equivalent and Alang-reconditioned, landed in 24–48 hours.

Auxiliary Engine parts in Egypt

Turkey

Tuzla · Istanbul · Izmir

We dispatch marine auxiliary engine spares from Bhavnagar, beside the Alang ship-recycling yard, to Turkey through local port agents — genuine, OEM-equivalent and Alang-reconditioned, landed in 24–48 hours.

Auxiliary Engine parts in Turkey

China

Shanghai · Ningbo · Qingdao

We dispatch marine auxiliary engine spares from Bhavnagar, beside the Alang ship-recycling yard, to China through local port agents — genuine, OEM-equivalent and Alang-reconditioned, landed in 24–48 hours.

Auxiliary Engine parts in China

Netherlands

Rotterdam · Amsterdam

We dispatch marine auxiliary engine spares from Bhavnagar, beside the Alang ship-recycling yard, to Netherlands through local port agents — genuine, OEM-equivalent and Alang-reconditioned, landed in 24–48 hours.

Auxiliary Engine parts in Netherlands

Brand & model index

Find your auxiliary engine.

Each auxiliary engine make has its own dedicated page with the full model list and part coverage. Pick your make to see specific models.

Caterpillar Daihatsu MaK Yanmar Bergen HiMSEN MAN Mitsubishi

Symptoms & causes

Common genset faults.

The symptoms our desk is asked about most — and the parts they point to. Send the engine model and the fault (won't load, hot cylinder, knock) for a firm quote.

fuel injector of auxiliary marine engine

Fuel injection

Won't take load

The set trips as load comes on — worn injectors or fuel pumps. Overhaul the injection equipment.

Injector / valve

One cylinder running hot

High exhaust temperature on one unit — a leaking injector or a burnt exhaust valve. Renew.

cylinder liner of auxiliary marine engine

Rings / liner

Hard starting / blow-by

Low compression — worn piston rings or a glazed liner. Renew the rings and liner.

connecting rod and bearing of auxiliary marine engine

Big-end / main

Bearing knock

A knock with falling oil pressure — worn big-end or main bearings. Renew the shells.

cylinder head of auxiliary marine engine

Head / liner seal

Coolant in the oil

Emulsified lube oil — a cracked head or a failed liner seal. Pressure-test and renew.

Governor

Overspeed / hunting

Unstable speed — a worn governor. Overhaul or renew the governor and actuator.

Turbocharger

Low boost, smoky

Down on power and smoking — a tired turbocharger. Recondition the cartridge.

Air-start valve

Won't turn on air

Won't start on starting air — a leaking air-start valve or distributor. Renew.

— Who we supply

Every propulsion fleet afloat.

From capesize bulkers to feeder container ships, we supply the crews and technical managers who keep merchant tonnage trading. Explore parts by vessel type.

Tankers

VLCCs, Suezmax & Aframax crude and product tankers

Genuine, OEM-equivalent and Alang-reconditioned marine auxiliary engine spares for tankers — dispatched from Bhavnagar to any port worldwide in 24–48 hours.

Auxiliary Engine parts for tankers

Bulk Carriers

Capesize, Panamax & Handysize ore and grain carriers

Genuine, OEM-equivalent and Alang-reconditioned marine auxiliary engine spares for bulk carriers — dispatched from Bhavnagar to any port worldwide in 24–48 hours.

Auxiliary Engine parts for bulk carriers

Container Ships

Feeder, Panamax & ULCV vessels worldwide

Genuine, OEM-equivalent and Alang-reconditioned marine auxiliary engine spares for container ships — dispatched from Bhavnagar to any port worldwide in 24–48 hours.

Auxiliary Engine parts for container ships

LNG / LPG Carriers

Membrane & Moss-type gas carriers

Genuine, OEM-equivalent and Alang-reconditioned marine auxiliary engine spares for lng / lpg carriers — dispatched from Bhavnagar to any port worldwide in 24–48 hours.

Auxiliary Engine parts for lng / lpg carriers

Offshore Support

AHTS, PSV, OSV, FPSO & jack-up rigs

Genuine, OEM-equivalent and Alang-reconditioned marine auxiliary engine spares for offshore support — dispatched from Bhavnagar to any port worldwide in 24–48 hours.

Auxiliary Engine parts for offshore support

Cruise and Ferries marine auxiliary engine spare parts — Cruise ships and coastal ferries

Cruise & Ferries

Cruise ships & coastal ferries

Genuine, OEM-equivalent and Alang-reconditioned marine auxiliary engine spares for cruise and ferries — dispatched from Bhavnagar to any port worldwide in 24–48 hours.

Auxiliary Engine parts for cruise and ferries

General Cargo

Multipurpose, breakbulk & project-cargo ships

Genuine, OEM-equivalent and Alang-reconditioned marine auxiliary engine spares for general cargo — dispatched from Bhavnagar to any port worldwide in 24–48 hours.

Auxiliary Engine parts for general cargo

Questions, answered

Marine auxiliary engine spares — your questions.

The questions technical managers and chief engineers ask us most about genset engine parts.

Which marine auxiliary engine brands and models do you supply?

Caterpillar (3500, 3400, C18/C32, 3600, C175), Daihatsu (DK-20/26/28/32/36), MaK (M20C, M25, M32, M43), Yanmar (6N18, 6N21, 6N280/330, 6EY), Bergen (B32:40, B33:45, C25:33) and HiMSEN (H17/28, H21/32, H25/33, H32/40). For each we hold cylinder heads, liners, pistons, bearings and fuel-injection parts — genuine, OEM-equivalent and reconditioned.

Can you supply parts for a Caterpillar 3500 series genset?

Yes — the 3508, 3512 and 3516 are among the most common marine gensets and we carry the full range: cylinder heads, wet liners, pistons and rings, main and big-end bearings, fuel injectors and pumps, and complete gasket sets. Send the exact model and variant (e.g. 3512C) for a firm quote.

What's the difference between a high-speed and a medium-speed auxiliary engine?

High-speed engines (CAT C18/C32, Yanmar 6N18) run at 1200–1800 rpm on MDO/MGO and suit smaller vessels and emergency sets; medium-speed engines (CAT 3500, MaK M32, Bergen B32:40) run at 400–900 rpm, burn heavy fuel and drive the main gensets on merchant ships. The overhaul rhythm and parts sizes differ — we supply both.

Do you supply reconditioned crankshafts, liners and heads?

Yes — this is Wattmare's most defensible niche. Alang is one of the few places in the world where reconditioned crankshafts, liners, cylinder heads and connecting rods for these engines are continuously harvested from scrapped vessels, then measured, crack-tested and re-machined. For obsolete and legacy sets, it is often the only source.

Are reconditioned auxiliary engine parts reliable?

Yes. Alang-recovered parts are measured to the maker's wear limits, crack-tested where safety-critical, heads pressure-tested and valves re-cut, and every rebuilt set is run and load-tested with a report. Typically 30–60% below new, and often the only source for legacy Daihatsu DC, MaK M453 or Bergen KRM parts.

Do you deliver auxiliary engine parts worldwide?

Yes. We dispatch from India through local port agents. Common destinations include UAE, Singapore and Europe. A vessel-down genset head or injector ships in 24–48 hours.

Can you supply governor and turbocharger parts for the genset too?

Yes — a genset is a system. Alongside the engine parts we supply the governor (Woodward, Regulateurs Europa) and the turbocharger parts for the same set, so a single enquiry covers the whole unit.

Who is the best marine auxiliary engine spare parts supplier in India?

Wattmare, in Bhavnagar beside Alang. We supply genuine, OEM-equivalent and reconditioned heads, liners, pistons, bearings and injection parts for Caterpillar, Daihatsu, MaK, Yanmar, Bergen and HiMSEN gensets, dispatched worldwide in 24–48 hours.

Auxiliary Engine terms

The parts, in plain terms.

A quick reference to the auxiliary-engine components and terms that come up when you order parts.

Auxiliary engine

The ship's generator (genset) engines — medium or high-speed four-stroke diesels that make the vessel's electrical power.

Genset

An engine coupled to an alternator to generate electricity. Every merchant ship runs two to four.

Four-stroke

The engine cycle (intake, compression, power, exhaust) used by auxiliary engines — with poppet valves and a camshaft, unlike a two-stroke main engine.

Cylinder liner

The replaceable wet sleeve the piston runs in. A major wear part, renewed at overhaul.

Medium-speed

An engine running at roughly 400–900 rpm, usually heavy-fuel capable — the main genset type on merchant ships.

Top overhaul

The upper-end service (heads, pistons, rings, valves) done every ~12,000–18,000 hours, short of a full bottom-end rebuild.

Fuel injector

The part that atomises fuel into the cylinder. Reconditioned or renewed every several thousand hours to keep combustion clean.

Heavy fuel (HFO)

The residual fuel medium-speed auxiliary engines can burn — cheaper but harder on liners, rings and injectors.

Marine engineer servicing ship machinery in the engine room — request a spare parts quote

Vessel down? Start here.

Get a auxiliary engine parts quote — usually the same day.

Send the auxiliary engine model and the part. For a critical breakdown we dispatch in 24–48 hours to any port worldwide.

WhatsApp for a quote Emergency parts desk

Explore

More marine spare parts.

Main Engine Turbocharger Governor Heat Exchanger Oil Separator Air Compressor Fresh Water Generator Refrigeration Compressor

09 / NINE AUXILIARY ENGINE BRANDS

Mirrlees Blackstone spare parts

Mirrlees Blackstone is a British builder of medium-speed four-stroke marine diesel engines, formed in 1969 from the merger of Mirrlees National at Stockport and Blackstone & Co at Stamford. The range covers the E series — ESL, ESS, ETSL, EWSL, ERS and EVS — for auxiliary and smaller propulsion duty, and the larger K Major, MB190, MB275 and MB430 types for main propulsion and power generation, spanning 190 mm to 430 mm bore. New engine production has ceased and the brand is now supported as a legacy programme, so owners depend on aftermarket and reconditioned components to keep these engines running. That is exactly what we supply.

Type

Medium-speed 4-stroke

Series

ESL · K Major · MB275

Bore

190 – 430 mm

Maker

Mirrlees Blackstone (UK)

ESL8ESL16ESS8K6 MajorMB275MB430

View Mirrlees Blackstone parts

Marine Auxiliary Engine Spare Parts Supplier — Caterpillar 3500/C32, Daihatsu DK, MaK M32, Yanmar N/EY, Bergen B32:40, HiMSEN heads, liners & bearings

Genset spares.In your port in 48 hours.

The ship's power, kept running from Alang.

Caterpillar spare parts

Daihatsu spare parts

MaK spare parts

Yanmar spare parts

Bergen spare parts

HiMSEN spare parts

MAN spare parts

Mitsubishi spare parts

Every part, restored to duty.

Tell us the auxiliary engine — get a quote.

Every auxiliary-engine wear part.

Cylinder head assembly

Piston & rings

Cylinder liner

Connecting rod & bearings

Main & thrust bearings

Fuel injection

Inlet & exhaust valves

Camshaft & followers

Turbocharger parts

Governor & actuator

Gasket & seal set

Cooler & pump parts

Quoted by people who know this equipment.

How to order the right auxiliary engine part.

Identify the unit

Pin the exact part

Choose the grade

Confirm class needs

Plan the lead time

Get a firm quote

The makes we cover, at a glance.

Three grades, one standard of fit.

Genuine OEM

OEM-equivalent

Reconditioned · Alang

Gensets,recovered and rebuilt.

Strip the engine

Measure liners & crank

Recondition the heads

Renew rings, bearings, valves

Reassemble to clearance

Run & load-test

When each auxiliary-engine part is due.

High-speed or medium-speed genset?

From your nameplate to your deck.

Send your enquiry

We locate & quote

Inspect & document

Dispatch in 24–48 hr

Survey-ready parts for every IACS society.

Auxiliary Engine parts, to every major port.

India

UAE & Gulf

Singapore

Greece

Egypt

Turkey

China

Netherlands

Find your auxiliary engine.

Common genset faults.

Won't take load

One cylinder running hot

Hard starting / blow-by

Bearing knock

Coolant in the oil

Overspeed / hunting

Low boost, smoky

Won't turn on air

Every propulsion fleet afloat.

Tankers

Bulk Carriers

Container Ships

LNG / LPG Carriers

Offshore Support

Cruise & Ferries

Genset spares.
In your port in 48 hours.

Gensets,
recovered and rebuilt.