
Cylinder Liner
Cast-iron liners, bore-honed to OEM spec. New and reconditioned for Caterpillar, Daihatsu, Yanmar, MAK and more.
Enquire on WhatsApp →CATERPILLAR · DAIHATSU · YANMAR · MAK · BERGEN · AKASAKA · HIMSEN · MAN · MITSUBISHI
Genuine, OEM-equivalent and Alang-reconditioned spares for marine diesel generator sets — Caterpillar, Daihatsu, Yanmar, MAK, Bergen, Akasaka, HiMSEN, MAN and Mitsubishi. Shipped worldwide in 24-48 hours.

Auxiliary engines — the diesel generator sets that supply a vessel's electrical load at sea and in port — run more total hours than the propulsion plant on most ships. That duty cycle wears out fuel injection equipment, running gear and cylinder components on a predictable schedule, and an off-hire genset can shut down cargo operations within hours. Wattmare supplies auxiliary engine spare parts for the full range of medium- and high-speed marine gensets, covering Caterpillar, Daihatsu, Yanmar, MAK, Bergen, Akasaka, HiMSEN, MAN and Mitsubishi.
Every line item is offered as genuine OEM, OEM-equivalent or quality reconditioned, so a chief engineer can match budget to criticality. Based in Bhavnagar beside the Alang ship-recycling yard, we recover and recondition low-hour components from decommissioned vessels — a sourcing channel no European trader can match on price or lead time. We also supply main engine, turbocharger and reconditioned marine parts under one quote, with confirmed orders dispatched worldwide in 24-48 hours.
ANATOMY OF AN AUXILIARY ENGINE
A marine diesel generator set — the same architecture as Caterpillar, Daihatsu, Yanmar, MAK, Bergen and HiMSEN four-strokes. These are the wear parts that keep the board alive.
Every part you see, we supply — genuine, OEM-equivalent or reconditioned from Alang, dispatched in 24–48 hours.
INTERACTIVE 3D
It rotates on its own as you reach it — drag to spin, scroll to zoom, and inspect every component up close.
● Live 3D model · auto-rotating · drag to spin · scroll to zoom
THE WEAR-PART CATALOGUE
New, OEM-equivalent and reconditioned — inspected, measured and certified for Caterpillar, Daihatsu, Yanmar, MAK, Bergen, Akasaka, HiMSEN, MAN and Mitsubishi gensets. Tap any part to message us on WhatsApp.

Cast-iron liners, bore-honed to OEM spec. New and reconditioned for Caterpillar, Daihatsu, Yanmar, MAK and more.

Forged crown + skirt assemblies, crack-tested, re-grooved and dimensionally verified.

Forged-steel piston crowns with re-cut ring grooves — crack-tested, OEM & reconditioned.

Compression & oil-control ring sets to exact gap, tension and coating for your bore.

Con-rods with big-end bearings & bolts — crack-detected and journal-checked.

Flow-tested, pressure-set injector/fuel-valve assemblies for clean combustion.

Heat-resistant spindles & seats, ground and lapped to seal first time.

Cast-steel covers, pressure-tested with bores re-machined on reconditioned units.

White-metal lined main & bottom-end shells to correct clearance and overlay.

Forged crankshafts & throws — journals measured, deflection-checked, polished.

Cam sections & discs with profile-checked lobes for fuel & exhaust timing.
Can’t see your part? If it wears, we supply it — send your engine model and a photo and we confirm condition, certification and price, usually within the hour.
Request a quote for any part →DRY-DOCK & OVERHAUL KITS
One quote, one crate — every part for the job, picked to your engine model and cylinder count, so nothing is missing when the engine is opened up.
Kits assembled per engine series and cylinder count — genuine, OEM-equivalent or reconditioned, line by line.
A generator set is engine and alternator — and we quote both sides: AVRs, rotating rectifier diodes, alternator bearings, anti-condensation heaters and terminal hardware for Stamford, Leroy-Somer, Taiyo and Nishishiba machines — with the same genuine, OEM-equivalent or reconditioned options and 24–48 hour dispatch.
BRANDS WE COVER
High-speed marine gensets
Spares for Caterpillar 3500, 3400 and C-series marine generator sets — fuel injectors, unit pumps, head gaskets, liners, bearings and aftercooler cores. Genuine, OEM-equivalent and reconditioned options.

DK / DC medium-speed sets
One of the most common auxiliary engines afloat. We hold Daihatsu DK and DC series fuel valves, plungers, cylinder heads, liners, piston rings and main/big-end bearings, including Alang-recovered units.
Auxiliary diesel gensets
Yanmar N, M, EY and Z series auxiliary engine spares — fuel injection nozzles, plunger-barrel assemblies, valves, valve seats, liners and bearing shells in genuine and reconditioned grades.
M-series medium-speed
MAK (Caterpillar) M20, M25, M32 and legacy M-series generator and propulsion spares — cylinder heads, liners, piston crowns, fuel injection valves, exhaust valves and bearings.
Rolls-Royce / Bergen sets
Bergen B, C, K and KR series medium-speed engine spares — fuel pumps, injection valves, cylinder liners, heads, piston rings and connecting-rod bearings for genset and propulsion duty.
Japanese aux & main diesels
Akasaka A, AH, UEC and DM series spares — fuel valves, plungers, cylinder heads, liners, piston rings and bearings. Frequently recovered in low-hour condition from Alang.

Hyundai HiMSEN gensets
Hyundai HiMSEN H21/32 and H25/33 series auxiliary engine spares — fuel injection valves, fuel pumps, cylinder heads, liners, piston assemblies and bearings, genuine and OEM-equivalent.

GenSet & holeby L-series
MAN four-stroke GenSet engine spares — L16/24, L21/31, L23/30, L27/38 and L28/32 series. Fuel injectors, fuel pumps, cylinder heads, liners, valves and bearings in genuine and reconditioned grades.

S / UE auxiliary diesels
Mitsubishi S-series and UE auxiliary engine spares — S6R, S12R, S16R and S-U/MPTK genset components: fuel injection nozzles, plungers, heads, liners, rings and bearing shells.
PARTS WE STOCK
Pick engine, model and part — and message us the exact spec in one tap.
Genuine, OEM-equivalent or reconditioned — we confirm condition, certification and price on WhatsApp, usually within the hour.
Original-bore & chrome-plated reconditioned, honed to tolerance.
Forged steel crowns & cast skirts — all bore sizes.
Nozzles, injectors & high-pressure pipes, bench-tested.
Spindles, seats & cages — Nimonic & reconditioned.
Main, crosshead & crankpin shells with certificates.
Rotors, nozzle rings, bearings & cartridges.
Also in stock
THE ALANG ADVANTAGE
ALANG · BHAVNAGAR, INDIA
Bhavnagar sits beside Alang, where ships still running obsolete MAN B&W MC, Sulzer RTA/RND and Mitsubishi UEC engines arrive for scrapping. That gives Wattmare direct access to genuine, low-hour genset parts at 30–50% below European prices — recovered, inspected, measured and certified before they ship.
RECONDITIONED TO OEM TOLERANCE
Every reconditioned part is honed, machined or refaced back to OEM tolerance, then dimensionally checked, crack-tested and certified — shipping with an inspection report, photographs and a 30-day warranty your surveyor will accept.
WHICH PART IS RIGHT?
FOR CLASS-CRITICAL WORK
Highest price · days–weeks
FOR PLANNED MAINTENANCE
30–50% less · days
FOR BUDGET & EMERGENCIES
Up to 70% less · 24–48 hrs
FROM INQUIRY TO DELIVERY

Low-hour parts recovered from vessels at the world’s largest ship-recycling yard.

Liners honed, crowns and valves machined and refaced back to OEM tolerance.

Dimensional checks, NDT crack-detection and pressure testing on every critical part.

VCI wrapping, wooden crates and palletisation — photos shared before dispatch.

Export documents handled and on the next flight to your port in 24–48 hours.
FLEETS WE SUPPLY

Daihatsu & Yanmar gensets, handysize to capesize.

HiMSEN & MAN GenSets for VLCC & MR fleets.

HiMSEN H21/32 & MAN L-series sets, feeder to ULCV.

Bergen & MAK genset running gear & combustion parts.

Yanmar, Daihatsu & Mitsubishi S-series for coasters & MPVs.

Caterpillar 3500-series & Cummins for supply & AHTS.

Four-stroke main & auxiliary for harbour & ocean tugs.

MAK & Akasaka, including obsolete-engine support.
CLASS-APPROVED & DOCUMENTED
REAL STOCK · BHAVNAGAR, INDIA
SURVEYOR-APPROVED
Material test certificates · 30-day warranty on reconditioned parts
MODELS & SPECIFICATIONS
| Model | Bore × stroke | Type | Status |
|---|---|---|---|
| MAN B&W S60ME-C8 | 600 × 2400 | 2-stroke electronic | Current |
| MAN B&W K98MC-C | 980 × 2660 | 2-stroke (obsolete) | Obsolete ★ |
| Wärtsilä RT-flex82C | 820 × 2646 | 2-stroke common rail | Serviced |
| WinGD X92 / X92-DF | 920 × 3468 | 2-stroke dual-fuel | Current |
| Mitsubishi UEC60LSII | 600 × 2300 | 2-stroke (UEC) | Serviced |
| Sulzer RTA72 / RTA84 | 720–840 bore | 2-stroke (Sulzer) | Obsolete ★ |
| Sulzer RND90 | 900 × 1550 | 2-stroke (legacy) | Obsolete ★ |
| Wärtsilä W46F | 460 × 580 | 4-stroke medium | Current |
| Hanshin LH41 | 410 × 800 | 4-stroke medium | Serviced |
| Pielstick PC4.2 | 570 × 660 | 4-stroke medium | Serviced |
WHERE WE DELIVER
24–48HR AIR FREIGHT
… and 20+ countries across the Middle East, Asia, Europe & the Americas
WHERE WE SUPPLY
Shipped from Bhavnagar beside Alang to Mumbai, Kandla, Mundra, Pipavav, Chennai, Kolkata and Visakhapatnam — same-day dispatch to every Indian port and shipyard.
Air-freight in 12–18 hours to Fujairah, Jebel Ali, Dubai, Sharjah, Abu Dhabi, Dammam and Bahrain — the fastest source for the Gulf.
16–24 hours to Singapore, Jurong, Port Klang, Tanjung Pelepas, Hong Kong, Busan and Shanghai — supporting bunker calls and dry-docks across Asia.
Delivered to Rotterdam, Hamburg, Antwerp, Piraeus, Istanbul and Tuzla — genuine and reconditioned spares across Europe, Greece and Turkey.
MODELS WE SUPPLY
Quote against your exact genset — common platforms include Caterpillar 3516, Daihatsu 6DK-20, Yanmar 6N18, MAK M32, HiMSEN H21/32 and MAN L21/31.
THE KNOWLEDGE DESK
Not every auxiliary engine part needs to be genuine OEM. Wattmare quotes three grades on every line so the decision sits with the engineer. Genuine parts carry the maker's box and full traceability for class-critical components. OEM-equivalent parts are produced to the same drawings and material specification by established marine manufacturers, typically at a meaningful saving. Reconditioned parts — our Alang speciality — are recovered from low-hour decommissioned gensets, inspected and restored to within wear limits.

Bhavnagar sits beside Alang, the world's largest ship-recycling yard. When a vessel is recycled, its auxiliary engines are frequently in serviceable, low-hour condition. We recover cylinder heads, liners, pistons, bearings and fuel equipment, then crack-test, pressure-test and dimensionally inspect each item. For a non-class-critical spare on an older genset, a reconditioned part at a fraction of OEM cost keeps the vessel trading. This applies equally to our reconditioned marine spare parts across the whole engine room.
Auxiliary engines are medium- and high-speed four-strokes running at 720-1800 rpm, against the slow-speed two-stroke main engine. They cycle on and off with electrical load, so fuel injection equipment, valves and bearings see more start-stop fatigue. A typical vessel runs two to four identical sets, which makes interchangeable spares and load-sharing accuracy across units a core maintenance concern.

Most modern auxiliary engines are turbocharged. A genset that smokes, loses power or trips on high exhaust temperature often has a turbocharger fault rather than an engine fault — see our turbocharger spare parts range for matched cartridges and components.
Auxiliary engine ranges share castings across models, and a single digit in a part number changes the bore, valve or bearing grade. We verify every part number against the maker's parts catalogue and the engine serial number before quoting, which is why the engine plate photo matters. This discipline carries across our full auxiliary engine spare parts catalogue and prevents the wrong-part delays that cost vessels days.

FAQ
We supply spares for Caterpillar, Daihatsu, Yanmar, MAK, Bergen, Akasaka, Hyundai HiMSEN, MAN GenSet and Mitsubishi auxiliary engines, covering the common medium- and high-speed marine generator platforms. If your set is not listed, send the engine plate and we will confirm availability.
Both. We quote three grades on every line item where available — genuine OEM, OEM-equivalent and quality reconditioned — so you can match spend to how critical the part is. The choice is always yours.
The engine maker, model and serial number from the nameplate, plus the part number from the maker's parts catalogue. A clear photo of the engine plate and the worn part is usually enough to confirm the exact item.
Confirmed orders for in-stock and Alang-sourced parts are dispatched worldwide within 24-48 hours, including air freight to UAE, Singapore, Europe and major ports for vessel-down situations.
Bhavnagar sits beside Alang, the world's largest ship-recycling yard. We recover low-hour auxiliary engine components from decommissioned vessels and recondition them, giving lead times and prices that traders sourcing only from OEM channels cannot match.
Reconditioned items are dimensionally inspected against the maker's wear limits, crack-tested and pressure-tested where applicable, and injectors are pop-tested. You receive condition notes before the parts are packed.
Yes. We assemble complete top-overhaul packages — cylinder head or head components, valves, liner, piston rings, injectors and the full gasket and O-ring set — matched to your engine model in one quote.
Hunting or surging usually traces to the governor, the fuel rack or worn injection pump elements. We supply overhauled governor and actuator parts and matched plunger-barrel assemblies; share the symptom detail and we will advise the likely cause.
Yes. Many genset faults — smoke, power loss, high exhaust temperature — are turbocharger related. We supply matched turbocharger cartridges and components alongside engine spares; see our turbocharger spare parts range.
OEM-equivalent parts are made to the original drawings and material specification by established marine manufacturers. For class-critical components we recommend genuine OEM with full traceability; for general wear parts, OEM-equivalent is widely accepted. We will flag which grade suits each application.
Yes. We regularly quote mixed orders across multiple genset makes and models, plus main engine and turbocharger spares, consolidated into a single shipment and quote.
Worldwide. Our most frequent express lanes are UAE, Singapore and Europe, but we dispatch to all major ports and dry-dock locations on request.
Often, yes. Obsolete models are exactly where the Alang reconditioning channel is strongest — components no longer made by the OEM can frequently be recovered, inspected and restored from recycled vessels.
REQUEST A QUOTE
Emergency failure, dry-dock overhaul or a long-term pipeline — send your engine and part and we confirm availability and price on WhatsApp, usually within the hour.
TELL US WHAT YOU NEED
WHEN A VESSEL IS DOWN
One photo on WhatsApp at 03:00; identified in stock beside Alang by 04:30; back at sea in 48 hours.
PARTS COVERAGE
Send your genset model and the part you need — we confirm availability, condition and price, usually within the hour.
EXPLORE MORE
Slow-speed two-stroke propulsion engine spares — liners, rings, fuel valves and bearings for MAN B&W, Wartsila and Sulzer.
Cartridges, rotors, nozzle rings and bearings for ABB, MHI, Napier and MAN turbochargers fitted to main and auxiliary engines.
Alang-recovered, inspected and tested engine-room components at a fraction of genuine OEM cost.
The full genset catalogue across Caterpillar, Daihatsu, Yanmar, MAK, Bergen, HiMSEN, MAN and Mitsubishi.
