Marine Spare Parts Supplier India | UAE, Singapore, Turkey
Marine Spare Parts Supplier India | UAE, Singapore, Turkey
Caterpillar · MaK · 3500 · 3600 · C-Series
Genuine, OEM and reconditioned spares for Caterpillar-MaK four-stroke main engines — the CAT 3500, the common-rail CAT 3600 Series and the Caterpillar C-Series — sourced beside Alang, shipped to India, UAE, Singapore & worldwide.
A century of diesel
Caterpillar is formed in Peoria, Illinois — the engineering house whose diesel engines would power industry, marine propulsion and power generation worldwide.
Caterpillar launches the 3500 series — high-speed four-stroke marine and genset engines that become a backbone of workboats, tugs and offshore vessels.
Caterpillar takes over Germany’s MaK Diesel of Kiel — adding the medium-speed M-series to the Caterpillar marine range.
Caterpillar expands with the medium-speed 3600 series and the high-speed C-Series (C32, C280) — electronically controlled, common-rail four-stroke power.
Caterpillar and MaK remain the global marine and power-generation standard — and Wattmare keeps every generation running with genuine, OEM-equivalent and Alang-reconditioned spares.
Who is Caterpillar
Caterpillar is the American engine major from Peoria, Illinois, whose four-stroke marine and offshore diesel engines power merchant ships, workboats, offshore vessels and gensets worldwide. Caterpillar acquired the German maker MaK in 1997, so the range spans the CAT 3500 and 3600 marine series, the high-speed C-Series, and the MaK medium-speed engines.
A single fleet can run the CAT 3500 series (3508, 3512, 3516), the larger 3600 series, the high-speed C18 / C32 / C280, or the MaK M20 / M25 / M32 / M43 — across main propulsion, auxiliary and genset duties. Wattmare supplies genuine, OEM-equivalent and Alang-reconditioned spares across every one of those series.
Engine series we cover
Mechanical four-strokeThe camshaft-controlled four-stroke that powered a generation of merchant ships. Many are ageing out — exactly why fleets struggle to find parts. Our strongest Alang line.
View all 23 CAT 3500 models
Common-rail four-strokeThe camshaft-free common-rail four-stroke — fuel injection and exhaust valves controlled electronically from a high-pressure rail. We hold rail valves, flow-control units, injection equipment, liners and crowns.
View all 3 3600 series models
Current four-strokeThe current generation built under the Caterpillar–Caterpillar joint venture — C-Series up to C-Series. Liners, piston crowns, common-rail injection and exhaust-valve parts.
View all 7 C-Series modelsBy the numbers
Parts we supply
Original-bore & reconditioned liners for the full CAT 3500, 3600 series and C-Series range, honed to OEM tolerance with measurement reports.
Surface-ground four-stroke cylinder covers with bushings, studs and gasket kits across all CAT 3500 and 3600 series bores.
Forged steel crowns and skirts for all CAT 3500, 3600 series and C-Series bores — reconditioned crowns dimensionally verified.
Piston rods with renewed running surfaces, matched to your exact cylinder unit and crosshead.
Compression and oil-control ring sets — pre-profiled and chrome-ceramic rings to Caterpillar-MaK spec.
Fuel injection valves, injector nozzles and atomisers for CAT 3500 and 3600 series engines, bench-tested before dispatch.
High-pressure fuel pumps, plungers and barrels for CAT 3500, plus common-rail supply units and flow-control valves for 3600 series.
Complete exhaust valves — Nimonic spindles, valve seats, cages, bottom pieces and air-spring components.
Main, crankpin & crosshead white-metal, trimetal and bimetal shells with material test certificates.
Housings, scraper and sealing ring sets for the piston rod — a key CAT 3500 and 3600 series overhaul item.
Rail valves, flow-control units (FCU), injection control units and supply-unit parts for CAT 3600 Series engines.
Camshaft chain-drive links, tighteners, sprockets and gear-drive parts for CAT 3500 engines.
Telescopic piston-cooling pipes and guide assemblies feeding oil to the crosshead and piston.
Cylinder and main starting-air valves, overhauled and pressure-tested for four-stroke engines.
Full sealing kits, cooling-jacket O-rings and high-temperature gaskets per engine model.
High-tensile cylinder-cover, tie-rod and main-bearing studs and hydraulic nuts.
Models & specifications
Every Caterpillar & MaK marine engine model we supply — genuine, OEM-equivalent, or Alang-reconditioned. Tap any model for an instant WhatsApp quote; can’t see yours? Send the nameplate and we’ll match it.
33 Caterpillar-MaK four-stroke models indexed — genuine, OEM-equivalent & Alang-reconditioned. Send your exact CAT 3500 / 3600 series / C-Series designation and we’ll match the part.
Which part is right?
Overhaul & repair kits
Send your exact CAT 3500, CAT 3600 Series or C-Series designation and we assemble a complete decarbonising, top-overhaul or major-overhaul kit — cylinder liners, piston rings, fuel injection valves, exhaust-valve spindles, stuffing-box rings, gaskets, O-rings and fasteners. Genuine or reconditioned, every kit ships with material or inspection certificates and a packing list cross-checked to your engine.
Piston rings, fuel injection valves, cylinder-cover O-rings, exhaust-valve grinding set and gaskets for a routine de-carb on one or all units.
Cylinder liner, piston rings, piston-crown inspection set, fuel injection valves, exhaust-valve spindle & seat and stuffing-box sealing rings.
Full running gear — liners, crowns, rods, main / crankpin / crosshead bearings, fuel pumps or common-rail parts and complete seal and fastener sets.
Inside the stockyard · 01
The camshaft-controlled 3516 through 3516, including the U and T high-output range — liners, covers, piston crowns, fuel pumps, chain drives and bearings, genuine and reconditioned beside Alang.
Inside the stockyard · 02
3600 series, 3600 series and 3600 series — common-rail supply units, rail valves, flow-control units (FCU), electronic fuel injection and exhaust-valve actuators alongside the shared liners, crowns and covers.
Inside the stockyard · 03
C-Series up to C-Series common-rail running gear, plus the four-stroke medium-speed Caterpillar 32 and 46 workhorse — cylinder heads, pistons, inlet/exhaust valves and fuel equipment for gensets and auxiliaries.
Inside the stockyard · 04
Beside the world’s largest ship-recycling yard, we recover low-hour Caterpillar-MaK parts no distributor stocks — documented, packed and airborne to your port.
Why Wattmare for Caterpillar
Direct access to genuine, low-hour Caterpillar-CAT 3500 and 3600 series parts no distributor still stocks — 30–50% below European prices.
One WhatsApp, one photo. We confirm stock, document, pack and fly it to your port — day or night.
From obsolete CAT 3500 fuel pumps and chain drives to 3600 series common-rail units — we know the difference and stock both.
Material certificates on genuine parts; inspection and measurement reports with photos on reconditioned.
How we source & recondition
Low-hour Caterpillar-MaK parts recovered from vessels at the world’s largest ship-recycling yard.
Every part is dimensionally checked against OEM drawings and Caterpillar-MaK tolerance limits.
Crack-detection, hardness and pressure testing on all critical liners, crowns, valves and bearings.
Inspection report, photos and a 30-day warranty — packed and air-freighted worldwide in 24–48 hours.
Fleets we supply
From capesize bulkers to LNG gas carriers — tap your vessel type for the full spare-parts range.
CAT 3500 and 3600 series main-engine spares for handysize to capesize fleets.
CAT 3500 and 3600 series wear parts and fuel equipment for VLCC and MR fleets.
CAT 3500/3600 series running gear plus cargo-pump prime-mover spares for chem fleets.
High-output 3516 and C-Series spares for feeder to ultra-large vessels.
X-DF dual-fuel running gear and combustion components for LNG fleets.
Four-stroke Caterpillar 26 and 32 spares for supply and anchor-handling vessels.
3516 and smaller-bore CAT 3500 spares for multipurpose and coaster ships.
CAT 3500 and 3600 series main-engine spares for PCTC and Ro-Ro fleets.
Smaller-bore CAT 3500 and four-stroke Caterpillar 20 spares for trawler fleets.
Four-stroke Caterpillar 32 and 46 genset and auxiliary spares for passenger ships.
Auxiliary Caterpillar four-stroke and running-gear spares for naval support vessels.
Legacy CAT 3500 fuel pumps, chain drives and running gear no distributor still offers.
Where we deliver
Air-freighted from Alang / Bhavnagar to the world’s biggest bunkering and repair hubs in 24–48 hours. Tap a market for local lead times and ports.
Diagnose the fault
| Symptom | Likely Caterpillar-MaK parts to inspect |
|---|---|
| Loss of compression or power on one unit | Cylinder liner, piston rings, piston crown |
| High exhaust temperature on one cylinder | Fuel injection valve / nozzle, exhaust valve spindle |
| Knocking or pounding from the crankcase | Main, crankpin or crosshead bearings |
| Excessive cylinder-oil consumption | Liner wear, piston rings, stuffing-box rings |
| Difficult or failed starting | Starting air valve, fuel pump (plunger / barrel) or rail valve |
| Black or smoky exhaust | Fuel valve nozzles, slide valves, turbocharger interface |
| Oil leak at the piston-rod gland | Stuffing box scraper and sealing ring set |
| Water in the combustion space | Cylinder cover, cooling-jacket O-rings, liner |
Compare the marques
Run a mixed fleet? We supply spare parts across all three of the great medium-speed four-stroke marques — here’s how they compare and where each one fits.
The complete guide
Wattmare is a specialist Caterpillar engine spare parts supplier serving India, the UAE, Singapore and the wider global fleet. From our base in Bhavnagar — beside the Alang ship-recycling yard — we supply genuine, OEM-equivalent and reconditioned spares for every generation of Caterpillar-MaK four-stroke marine main engine, dispatched worldwide in 24–48 hours.
The four-stroke engines on this page descend from MaK Brothers of Peoria, Switzerland — one of the oldest names in engineering. Caterpillar of Finland acquired the MaK diesel business in 1997, and in 2015 the line passed to Caterpillar, the Caterpillar–Caterpillar joint venture. The mechanical CAT 3500 Series (3516–3516, including the U and T high-output variants) powered a generation of merchant ships. The common-rail CAT 3600 Series replaced the camshaft with an electronically controlled high-pressure rail, and the current C-Series (C-Series–C-Series) carries it forward. We supply spares across all of them.
The single most important question on any Caterpillar-MaK order is whether the engine is an CAT 3500, an 3600 series or an C-Series. The CAT 3500 is camshaft-controlled — fuel pump, fuel cam, chain drive and mechanical exhaust-valve gear. The CAT 3600 Series and the Caterpillar C-Series are electronically controlled, replacing the camshaft with a common-rail supply unit, rail valves, flow-control units (FCU) and hydraulically actuated exhaust valves. Liners, covers, crowns and bearings are broadly common by bore, but injection and actuation parts are entirely different — always give us your exact CAT 3500 / 3600 series / C-Series designation.
Alongside the four-strokes, Caterpillar’s medium-speed four-stroke engines power gensets and auxiliary sets. The range — Caterpillar 20, 26, 32, 34, 46 and 46F, plus the V-versions — is among the most installed auxiliary engines afloat. While this page focuses on the four-stroke mains, we also carry heads, pistons, liners, valves, fuel injection valves, fuel pumps and bearings for these four-strokes.
Bhavnagar sits beside Alang, where hundreds of vessels are dismantled every year — including ships still running ageing CAT 3500 four-stroke engines. That gives Wattmare direct access to genuine, low-hour parts that are slow or costly to source from distributors, at a fraction of new-part cost and lead time. For hard-to-find CAT 3500 fuel pumps, chain drives, liners or running gear, this is the fastest source in the world. Browse our reconditioned marine spare parts range, the wider main engine spare parts category, or sister brands like MAN engine spares and Mitsubishi UEC.
Send your Caterpillar engine make and model with a photo or part number on WhatsApp, or use the quote form. We confirm availability and price — usually within the hour — and dispatch in-stock items within 24 hours. Typical air-freight transit is 12–18 hours to the UAE, 16–24 to Singapore, 20–26 to Greece and Turkey, and 28–36 to Northern Europe.
FAQ
Yes — cylinder liners are one of our strongest Caterpillar-MaK lines. We carry original-bore and reconditioned liners for the 3516 and 3516, plus the rest of the CAT 3500 range (3516, 3516, 3516, 3516, 3516, 3516, 3516), honed to OEM tolerance with measurement reports. Most legacy CAT 3500 liners are recovered and reconditioned beside Alang.
The CAT 3500 is a camshaft-controlled (mechanical) four-stroke — fuel pump, fuel cam and mechanical exhaust-valve actuation. The CAT 3600 Series and the Caterpillar C-Series are electronically controlled, replacing the camshaft with a common-rail supply unit, rail valves, flow-control units (FCU) and hydraulically actuated exhaust valves. Liners, crowns and bearings are broadly similar by bore, but the injection and exhaust-valve actuation parts are completely different — always quote your exact CAT 3500, 3600 series or C-Series model.
We cover the full four-stroke range — the current Caterpillar C-Series (C-Series, C-Series, C-Series, C-Series, C-Series, C-Series, C-Series), the common-rail CAT 3600 Series (3600 series, 3600 series, 3600 series) and the legacy CAT 3500 (3516 up to 3516, including the U, T and -B variants) — 33 models in all. We also supply the four-stroke medium-speed Caterpillar 20, 26, 32, 34, 46 and 46F.
Reconditioned parts ship with inspection reports, dimensional measurements and photographs, and are accepted by class societies (Lloyd’s Register, DNV, ABS, BV, ClassNK, RINA) on survey. Genuine Caterpillar parts carry full material and test certificates.
In-stock items dispatch within 24 hours from Bhavnagar. Typical air-freight transit to the UAE (Dubai, Jebel Ali, Fujairah) is 12–18 hours. Singapore is 16–24 hours, Greece and Turkey 20–26, and Northern Europe 28–36.
Yes — fuel injection valves, injector nozzles, high-pressure fuel pumps, plungers and barrels for CAT 3500 engines, plus common-rail supply units, rail valves, flow-control units (FCU) and injection equipment for CAT 3600 Series and C-Series engines, are stocked and bench-tested before dispatch.
Genuine parts come from the original maker (Caterpillar / Caterpillar) with full certificates. OEM-equivalent are quality aftermarket parts at 30–50% less. Reconditioned are low-hour parts recovered from Alang, inspected and certified to OEM tolerance, at up to 70% less with a 30-day warranty.
Yes — obsolete CAT 3500 parts are our specialty. Beside Alang we recover low-hour fuel pumps, chain drives, liners, crowns and running gear from CAT 3500-powered vessels being dismantled, then inspect and certify them. For 3516, 3516, 3516, 3516, 3516, 3516, 3516, 3516 and 3516 engines this is often the fastest source in the world.
Yes — combustion and running-gear spares for the four-stroke medium-speed Caterpillar 20, 26, 32, 34, 46 and 46F (and the V-versions), including cylinder heads, pistons, liners, inlet/exhaust valves, fuel equipment and bearings for gensets and auxiliary engines.
Send your engine model and a photo or part number on WhatsApp (+91 96647 18068), or use the quote form. We confirm availability and price, usually within the hour — whether you need genuine, OEM-equivalent, used or reconditioned parts, or a complete overhaul kit.
We ship from Alang/Bhavnagar to the UAE, Dubai, Singapore, Greece, Turkey and every major port worldwide in 24–48 hours. Parts are export-packed with VCI wrapping, wooden crates and palletisation, with photos shared before dispatch and full export documentation included.
Yes — decarbonising, top-overhaul and major-overhaul kits assembled to your exact CAT 3500, CAT 3600 Series or C-Series model, with liners, piston rings, fuel injection valves, exhaust-valve spindles, stuffing-box rings, gaskets, O-rings and fasteners included.
Request a quote · reply within the hour
Emergency Caterpillar failure, dry-dock overhaul, or a long-term pipeline — send your engine and part, and a founding partner replies on WhatsApp, usually within the hour. Genuine, OEM, used or reconditioned.
Wattmare — Bhavnagar, Gujarat, India, beside the Alang ship-recycling yard. Genuine, OEM & reconditioned Caterpillar-MaK spares, worldwide in 24–48 hours.
India 
Bhavnagar 
UAE 
Singapore 
Greece 
Turkey 
Egypt 
China 
South Korea 
Japan 
Philippines 
Netherlands 
Norway