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Cummins KTA 50 Engine Parts

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Parts Catalog For Cummins KTA50 Marine & Industrial Engines

Diesel Pro Power carries one of the most complete inventories of Cummins KTA 50 engine parts, all available online and ready to ship globally within 24 hours. Our parts meet or exceed OEM standards and are suitable for both marine and industrial applications.

Engine Rebuild Kits for Cummins KTA 50

We offer complete rebuild kits that simplify engine restoration. Kits are available for full rebuilds and include:

  • Pistons and ring sets

  • Cylinder liners

  • Connecting rod and main bearings

  • Upper and lower gasket sets

  • Liner seals and thrust washers

  • Retainer pins and piston pins

We also offer individual rebuild components for targeted repairs or top-end refreshes.

Cooling System Components for Cummins KTA 50

Cooling is critical for preventing thermal failure in continuous-duty engines. Our cooling parts catalog includes:

  • Freshwater cooling pumps

  • Seawater cooling pumps

  • Thermostats and seals

  • Marine impellers and zincs

  • Radiator cleaning solutions and flush kits

  • Basket strainers and corrosion-resistant gaskets

Cylinder Head Components for Cummins KTA 50

We carry everything from complete head assemblies to precision components for head repair:

  • Assembled cylinder heads with valves and springs

  • Valve guides, inserts, and retainers

  • Valve cover gaskets

  • Head bolts and torque kits

  • Push rods and rocker arms

All heads are pressure-tested and machined to marine/industrial specs.

Fuel System Components for Cummins KTA 50

Maintain consistent power and fuel economy with quality fuel system parts:

  • Fuel pumps

  • Fuel filters and water separators

  • PT injector nozzles and seals

  • Fuel lines and fitting kits

  • Injector timing tools and PT governor accessories

Crankshaft and Rotating Assembly Parts for Cummins KTA 50

We supply robust components to restore bottom-end stability:

  • Crankshafts

  • Connecting rods

  • Main and rod bearing sets

  • Crankshaft seals (front and rear)

  • Vibration dampers and couplings

Turbocharger and Air System Components for Cummins KTA 50

For optimal air intake and boosted performance under load:

  • Quad turbochargers

  • Turbo clamps and gaskets

  • Charge air cooler components

  • Air cleaner housings and intake elbows

  • Marine-grade hoses and clamps

Exhaust System Components for Cummins KTA 50

Built to manage exhaust gas in both confined and open environments:

  • Exhaust manifolds and elbows

  • Mufflers and silencers

  • Exhaust wrap and manifold insulation

  • Stack caps, flanges, and clamps

Sensors and Gauges for Cummins KTA 50

Track performance and detect faults early with reliable diagnostics:

  • Oil pressure and water temp sensors

  • RPM pickups and EGT sensors

  • Shutdown switches

  • Marine-grade gauges (mechanical and electric)

  • Tachometers, voltmeters, and multifunction panels

Electrical Components for Cummins KTA 50

From starting systems to remote controls:

  • Starters and solenoids

  • Ignition switches

  • Wiring harnesses and battery cables

  • Alternators

  • Engine control modules and marine relay systems

Sealants, Paints, and Accessories

For installation, maintenance, and cosmetic finishing:

  • RTV silicone and thread sealants

  • Gasket adhesives

  • Cummins red and black engine enamel

  • Degreasers, radiator flush, and corrosion protection solutions

Why Buy Cummins KTA 50 Parts from Diesel Pro Power?

24-Hour Global Shipping

Get your Cummins KTA 50 parts delivered fast—shipped within 24 hours, no matter where in the world you’re located.

40,000+ Satisfied Customers

Join a trusted global network of over 40,000 customers who rely on Diesel Pro Power for:

  • High-quality aftermarket parts

  • Fast, reliable delivery

  • Personalized, expert support

  • Total order transparency

One-Year Warranty

Every part we sell comes with a full 1-year warranty, ensuring you get both performance and peace of mind.

Easy, Transparent Ordering

  • Secure online checkout

  • Prepay import taxes and duties

  • Track your shipment from warehouse to your dock or jobsite

  • No hidden fees—what you see is what you pay

Friendly, Expert Support

Our trained diesel engine professionals are here to help with:

  • Part identification

  • Rebuild recommendations

  • Shipping coordination

  • Troubleshooting guidance

Cummins KTA50 Engine Specifications, Marine & Industrial Applications

Engine Specifications for Cummins KTA50

The Cummins KTA50 is a 16-cylinder, four-stroke diesel engine built for extreme performance in both marine and industrial operations. Its massive displacement and robust engineering make it a global leader in high-horsepower environments.

Engine Model

Cummins KTA50

Configuration

V16, 4-stroke diesel

Displacement

50.3 liters (3,070 cubic inches)

Power Output

750 – 1,800 HP (559 – 1,342 kW)

Aspiration

Quad Turbocharged & Aftercooled

Fuel System

Cummins PT (Pressure-Time) Injection

Cooling System

Heat exchanger or radiator-cooled

Emissions Compliance

IMO Tier I & Tier II certified

Manufacturing Plant

Daventry Engine Plant, UK

This engine is designed to deliver maximum power under continuous-duty conditions, with proven longevity in mission-critical operations.

Marine Applications of the Cummins KTA50

Built to perform in the most punishing marine environments, the KTA50 powers vessels and onboard systems that require high torque, fuel efficiency, and zero compromise on uptime. It is a trusted choice for:

  • Tugboats and Push Boats – Provides massive torque for heavy towing and maneuvering.

  • Offshore Supply Vessels (OSVs) – Used in long-range, continuous-duty transport and anchor-handling operations.

  • Commercial Fishing Vessels – Ideal for high-load operation in trawlers and longliners working around the clock.

  • Super Yachts and Support Vessels – Smooth propulsion performance with low noise and vibration.

  • Harbor and Pilot Boats – Offers fast throttle response and extended durability under start-stop cycles.

  • Marine Auxiliary Generators – Powers hydraulics, winches, HVAC, electronics, and lighting in commercial vessels.

Its ability to maintain power across long intervals and in corrosive saltwater environments has made it a marine industry staple for over 25 years.

Industrial Applications of the Cummins KTA50

On land, the Cummins KTA50 is deployed in extreme industrial operations where downtime is not an option. It offers unmatched reliability and torque output in applications such as:

  • Oil and Gas Drilling Rigs – Delivers consistent power for deep drilling platforms in remote or offshore sites.

  • Power Plants and Prime Power Generators – Supplies large-scale, reliable electricity for mining camps, refineries, and emergency systems.

  • Mining Equipment – Powers large haul trucks, shovels, and draglines used in open-pit operations.

  • Heavy-Duty Construction Machinery – Found in cranes, tunneling equipment, and large-scale earth movers.

  • Pipeline and Water Pumping Stations – Provides continuous mechanical drive in critical infrastructure.

  • Remote Worksite Utilities – Operates under constant load in the harshest environmental conditions.

With its quad-turbo setup and massive displacement, the KTA50 maintains exceptional fuel efficiency, heat tolerance, and operational stability under the most extreme loads.

Cummins KTA50 Engine – Frequently Asked Questions

1. What is the Cummins KTA50 engine used for?

The Cummins KTA50 is used in high-horsepower marine propulsion, offshore support vessels, generator sets, oil and gas drilling rigs, mining trucks, and heavy industrial equipment.

2. What does KTA stand for in Cummins KTA50?

"KTA" stands for Turbocharged and Aftercooled. The “K” denotes the series, while “T” and “A” refer to the turbocharging and aftercooling systems that boost performance and fuel efficiency.

3. What is the displacement of the Cummins KTA50?

The KTA50 has a displacement of 50.3 liters (3,070 cubic inches).

4. What is the power output of the Cummins KTA50?

The engine delivers between 750 and 1,800 horsepower (559–1,342 kW) depending on configuration, tuning, and application.

5. Is the KTA50 a marine or industrial engine?

Both. The KTA50 is used extensively in marine propulsion and auxiliary systems, as well as land-based industrial applications such as generators, oil rigs, and mining equipment.

6. How many cylinders does the KTA50 have?

The KTA50 is a V16 engine, meaning it has 16 cylinders in a V configuration.

7. What type of fuel system does the KTA50 use?

It uses a PT (Pressure-Time) mechanical fuel injection system, known for durability and high flow at lower pressures.

8. Where is the Cummins KTA50 manufactured?

The engine is manufactured at the Daventry Engine Plant in Daventry, United Kingdom.

9. Is the Cummins KTA50 emissions compliant?

Yes. It meets IMO Tier I, and certain models are also IMO Tier II certified for marine use. Industrial variants vary depending on region and application.

10. How is the KTA50 cooled?

Marine engines are cooled via heat exchanger and seawater systems, while industrial engines typically use radiator-cooled configurations.

11. What are the service intervals for the KTA50?

Service intervals vary by use, but common maintenance includes:

  • Oil & filter changes every 250–300 hours

  • Coolant system inspection every 500 hours

  • Valve lash checks every 1,000 hours

  • Major inspections every 5,000+ hours

12. How long does a KTA50 engine typically last?

With proper maintenance, the KTA50 can last 20,000–30,000+ hours before requiring a full rebuild, depending on load and operating conditions.

13. Can the KTA50 be used as a generator engine?

Yes. It is commonly used in prime and standby generator sets, especially in remote or high-load applications like mines and drilling operations.

14. Does the KTA50 require special tools for servicing?

Yes. You’ll need heavy-duty diesel tools such as:

  • Torque wrenches

  • Liner pullers

  • Injector timing tools

  • Feeler gauges

  • Valve setting tools

15. What fluids are recommended for the KTA50?

Cummins recommends high-alkaline, low-ash diesel engine oil (e.g., 15W-40 for most climates) and a proper diesel-rated coolant with corrosion inhibitors.

16. Is the KTA50 overkill for recreational vessels?

It depends. While primarily designed for commercial use, it is sometimes found in super yachts or support vessels requiring exceptional performance and power redundancy.

17. Can the KTA50 operate in continuous-duty mode?

Yes. It’s designed for continuous, heavy-duty service, ideal for around-the-clock marine and industrial operations.

18. What makes the KTA50 different from the KTA38?

The KTA50 has 16 cylinders compared to the KTA38’s 12. This results in higher horsepower, more torque, and greater displacement—ideal for larger, heavier equipment and vessels.

19. What are the dimensions and weight of the KTA50 engine?

Approximate dry weight: 11,500–12,000 lbs (5,200–5,500 kg)
 Length: ~100 inches, Width: ~63 inches, Height: ~65 inches (varies slightly by model and configuration)

20. Why choose the Cummins KTA50 over other large engines?

The KTA50 is known for its:

  • Legendary durability

  • Global parts availability

  • Proven marine and industrial performance

  • Ease of mechanical service compared to electronic engines

It’s a trusted choice worldwide for heavy-duty diesel users who value power and reliability.

Overhaul Kits for Cummins KTA50 – FAQs

1. What is included in a Cummins KTA50 overhaul kit?

Our complete overhaul kits typically include:

  • Pistons and rings

  • Cylinder liners

  • Main and rod bearings

  • Upper and lower gasket sets

  • Thrust washers, retainer pins, and liner seals

2. Can I purchase individual parts instead of a full kit?

Yes. While we don’t sell pre-packed top-end or bottom-end kits, all components are available individually, including pistons, gaskets, bearings, and seals.

3. Are your overhaul kits compatible with marine and industrial KTA50 engines?

Yes. Our parts are compatible with both marine and industrial KTA50 variants. If you're unsure, contact us and we’ll confirm compatibility.

4. Do I need special tools to install an overhaul kit?

Yes. A full rebuild typically requires tools such as:

  • Torque wrenches

  • Liner pullers

  • Piston ring compressors

  • Feeler gauges

5. How quickly can I receive an overhaul kit?

All in-stock kits ship within 24 hours, and we offer worldwide delivery with tracking and prepaid import duty options.

Cylinder Heads for Cummins KTA50 – FAQs

1. Do you offer fully assembled cylinder heads for the KTA50?

Yes. We offer fully assembled heads with valves and springs installed.

2. How can I tell if my cylinder head needs replacement?

Signs include:

  • White smoke or coolant loss

  • Cracked head surface

  • Oil in coolant or vice versa

  • Compression loss in one or more cylinders

3. Do I need to replace all heads at once on a V16 engine?

Not necessarily. However, it’s often advised to inspect all heads during a rebuild and replace any that show warping, cracking, or valve seat damage.

4. Are head gaskets and bolts included with the cylinder head?

No. Cylinder heads are sold separately. Head gaskets, bolts, and installation hardware are available individually or as part of a gasket set.

5. Are your cylinder heads pressure-tested?

Yes. Every head we sell is pressure-tested and machined to ensure proper sealing and performance in high-pressure environments.

Injectors for Cummins KTA50 – FAQs

1. What type of injectors does the Cummins KTA50 use?

The KTA50 uses PT (Pressure-Time) mechanical injectors, known for their simplicity and reliability in high-horsepower applications.

2. How can I tell if my KTA50 injector is failing?

Look for:

  • Hard starting or misfire

  • Rough idle

  • Increased fuel consumption

  • Black smoke or excessive exhaust emissions

3. Do you sell injector seal kits?

Yes. We offer complete injector seal kits that include O-rings, copper washers, and installation spacers.

4. Should I replace all injectors at once?

While not always necessary, replacing all injectors ensures balanced fuel delivery and avoids uneven performance or cylinder damage.

5. Are your injectors calibrated and ready to install?

Yes. All our injectors are factory-calibrated, tested for flow rate and ready for immediate installation.

Raw Water Pumps for Cummins KTA50 – FAQs

1. What does the raw water pump do on a Cummins KTA50 marine engine?

The raw water pump pulls seawater into the engine’s heat exchanger system to cool the internal coolant. It’s a critical part of the closed-loop cooling system in marine engines.

2. How do I know if my raw water pump needs replacing?

Signs include:

  • Overheating at low RPMs

  • Reduced water flow or dry exhaust

  • Leaking seals

  • Excessive corrosion or impeller damage

3. Do raw water pumps include impellers and zincs?

Many of our raw water pump kits come with impellers, seals, and zinc ports. However, some accessories like zinc anodes and impeller pullers may be sold separately.

4. How often should I replace the impeller?

For saltwater use, we recommend replacing the impeller every 200–300 hours or annually—whichever comes first—to prevent breakdowns.

5. Can I get a raw water pump compatible with seawater exposure?

Yes. Our pumps are built from corrosion-resistant marine-grade materials and designed for high-hour use in saltwater conditions.

Freshwater Pumps for Cummins KTA50 – FAQs

1. What is the role of a freshwater pump in a KTA50 engine?

The freshwater pump circulates coolant within the engine’s internal loop, transferring heat to the heat exchanger where it’s cooled by raw water.

2. What are signs that a freshwater pump is failing?

Common symptoms include:

  • Engine overheating

  • Coolant leaks near the pump

  • Noisy operation or a seized shaft

  • Coolant not circulating properly

3. Do your freshwater pumps come with mounting gaskets and seals?

Yes. Most of our freshwater pump kits come with the required mounting gaskets and seal rings. We also offer seal kits separately for maintenance.

4. Are these pumps designed for continuous-duty marine operation?

Absolutely. Our pumps are rated for continuous-duty service in marine environments and built to withstand high temperatures and pressure.

5. Can I replace the freshwater pump without removing the engine?

In most cases, yes. The pump is usually mounted externally and can be removed and replaced using basic hand tools and proper torque specs.

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