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Cummins QSK 19 Engine Parts

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Parts Catalog For Cummins QSK19

Engine Specifications for Cummins QSK19

The Cummins QSK19 is a high-horsepower, 6-cylinder diesel engine engineered for durability, continuous operation, and low-emission performance in both marine and industrial settings. With advanced fuel injection technology and a robust block design, the QSK 19 sets the standard for mid-size power in demanding applications.

Key Specifications:

  • Engine Model: Cummins QS 19

  • Configuration: Inline 6-cylinder

  • Displacement: 18.9 liters

  • Power Output: 500–800 HP (373–597 kW)

  • Fuel System: Modular Common Rail System (MCRS)

  • Cooling: Water-cooled via heat exchanger (marine) or radiator (industrial)

  • Emissions: IMO Tier II, EU Stage IIIA, EPA Tier 2 compliant

  • Features: Advanced fuel control, idle stability, reduced noise and vibration

  • Manufacturing Facility: Seymour Engine Plant, Seymour, Indiana, USA

Marine and Industrial Applications of the Cummins QSK19 Engine

 Marine Applications

Built for endurance and fuel efficiency, the QSK19 is trusted in:

  • Crew boats and pilot vessels

  • Tugboats and utility workboats

  • Marine generator sets and auxiliary power

  • Commercial fishing boats

  • Support vessels for super yachts and expedition craft

Its reduced noise and vibration make it an excellent choice for onboard comfort and long-hour operation.

 Industrial Applications

The QSK19 also thrives in rugged industrial environments where high uptime is critical:

  • Oil and gas drilling platforms

  • Underground and surface mining equipment

  • Stationary power generation systems

  • Construction equipment

  • Large-scale water pumps and irrigation infrastructure

Its modular design, efficient fuel system, and durable build make it a long-term investment for high-load applications.

Cummins QSK19 Parts Catalog

Diesel Pro Power offers a full range of Cummins QSK19 engine parts, all available for fast global delivery. We help reduce your downtime and keep your engine operating at peak performance.

Engine Rebuild Kits for Cummins QSK19

Our overhaul kits are built for marine and industrial engines alike, offering components such as:

  • Pistons and ring sets

  • Cylinder liners and liner seals

  • Main and rod bearing sets

  • Upper and lower gasket sets

  • Wrist pins, thrust washers, and piston retainers

We also sell individual rebuild components for custom repairs.

Cooling System Components for Cummins QSK19

Control engine temperature with durable cooling system parts:

  • Freshwater pumps

  • Seawater pumps with impellers

  • Thermostats and housing gaskets

  • Pump seals and strainers

  • Marine-grade zinc fittings

  • Radiator cleaning solutions

Cylinder Head Components for Cummins QSK19

Support combustion and prevent pressure loss with quality cylinder head parts:

  • Cylinder heads (with or without valves and springs)

  • Valve seats, guides, and retainers

  • Valve cover gaskets

  • Head bolt kits

  • Push rods, rocker arms, and injector levers

All heads are pressure-tested and machined to spec.

Fuel System Components for Cummins QSK19

Ensure clean, high-pressure fuel delivery with modern diesel fuel system parts:

  • Modular Common Rail injectors

  • Fuel filters and water separators

  • Lift pumps and injection hardware

  • Fuel rail seals and line kits

  • Fuel pressure sensors and shut-off solenoids

Crankshaft and Rotating Assembly for Cummins QSK19

We offer premium parts to support your engine’s bottom-end assembly:

  • Crankshafts

  • Connecting rods

  • Main and rod bearing sets

  • Crankshaft seals and vibration dampers

  • Flywheel hardware

Turbocharger and Air Intake Components for Cummins QSK19

Boost performance and air delivery with turbo and intake parts:

  • Turbochargers

  • Turbo clamps and gaskets

  • Charge air coolers

  • Air filters and filter housings

  • Marine air intake elbows and screens

Exhaust System Components for Cummins QSK19

Optimize exhaust flow and backpressure management:

  • Exhaust manifolds

  • Mufflers and stack silencers

  • Elbows and manifold gaskets

  • Heat insulation wrap

  • Exhaust clamps and flanges

Sensors and Monitoring Equipment for Cummins QSK19

Track critical performance data in real time:

  • Oil pressure and water temperature sensors

  • Coolant level and boost sensors

  • Exhaust gas temperature sensors (EGT)

  • Shutdown switches and alarms

  • Mechanical and electric gauges (tachometers, voltmeters, etc.)

Marine Electrical Components for Cummins QSK19

Power up and monitor your engine with reliable electrical parts:

  • Starter motors

  • Ignition switches and wiring kits

  • Marine alternators

  • Control panels and indicator modules

  • Battery cables and harnesses

Paints, Sealants, and Installation Accessories

Get the job done with finishing tools and consumables:

  • RTV silicone sealant

  • Thread sealants and gasket adhesives

  • Cummins OEM red and black paint

  • Degreasers and coolant flush

Why Buy Cummins QSK19 Parts from Diesel Pro Power?

24-Hour Worldwide Shipping

No matter where your operation is based—onshore or offshore—your Cummins QSK19 parts ship within 24 hours, fast and reliably.

40,000+ Satisfied Customers

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

  • High-quality aftermarket parts

  • Easy, transparent ordering

  • Personalized support from real experts

  • Competitive pricing with fast delivery

One-Year Warranty on All Parts

Every QSK19 part we sell comes with a 1-year warranty, giving you peace of mind with every order.

Prepaid Import Duties at Checkout

Eliminate customs delays and billing surprises. Pay your import duties during checkout and track your true total cost from start to finish.

Expert Customer Support

Need help identifying a part or confirming fitment? Our diesel engine professionals are here to assist—via phone, email, or live chat.

Overhaul Kits for Cummins QSK19 – FAQs

1. What comes in a Cummins QSK19 overhaul kit?

Our complete overhaul kits typically include:

  • Pistons and rings

  • Cylinder liners

  • Main and rod bearings

  • Upper and lower gasket sets

  • Thrust washers, liner seals, and retainer pins

2. Can I order parts individually instead of a full kit?

Yes. All overhaul kit components are also available individually, including pistons, gaskets, bearings, and liners.

3. Are the overhaul kits compatible with both marine and industrial versions?

Yes. Our kits are suitable for both marine and industrial QSK19 engines. If needed, provide your engine serial number for confirmation.

4. Do the overhaul kits come with installation instructions?

While instructions are not included, our customer service team can provide torque specs and general installation guidance upon request.

5. How fast do you ship overhaul kits?

All in-stock overhaul kits ship within 24 hours. We also offer worldwide shipping with optional prepaid import duties at checkout.

Cylinder Heads for Cummins QSK19 – FAQs

1. Are your cylinder heads sold fully assembled?

Yes. We offer fully assembled cylinder heads that include valves, springs, retainers, and are ready for installation.

2. Do you sell bare heads without valves and springs?

Yes. Bare heads are available if you plan to rebuild using your existing components or upgrade with performance parts.

3. What are signs of a failing cylinder head?

Common indicators include:

  • White smoke from exhaust

  • Coolant in oil or vice versa

  • Loss of compression

  • External cracks or overheating issues

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

No. Head bolts and gaskets are sold separately, but we offer complete head gasket sets and bolt kits for convenience.

5. Are your cylinder heads pressure-tested?

Yes. All heads are pressure-tested and machined to ensure sealing performance and structural integrity.

Injectors for Cummins QSK19 – FAQs

1. What type of injectors does the QSK19 use?

The QSK19 uses high-pressure injectors as part of the Modular Common Rail Fuel System (MCRS), designed for precise fuel delivery and low emissions.

2. How do I know if my injectors are failing?

Symptoms include:

  • Hard starting

  • Rough idle or misfiring

  • Black smoke or excessive exhaust

  • Poor fuel economy or performance dips

3. Are your injectors new or remanufactured?

We supply high-quality aftermarket injectors that meet or exceed OEM specifications and are ready for installation.

4. Do injectors come with installation hardware?

Most injectors are sold individually, and seal kits or retaining hardware may be purchased separately as needed.

5. Should I replace all six injectors at once?

While not mandatory, it is recommended to replace all injectors at the same time to ensure balanced fuel delivery and consistent performance across all cylinders.

Raw Water Pump for Cummins QSK 19 – FAQs

1. What is the purpose of a raw water pump in a QSK 19 marine engine?

The raw water pump draws in seawater and circulates it through the heat exchanger to cool the engine’s internal coolant, which helps regulate engine temperature in marine environments.

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

Common signs include reduced water flow, engine overheating, leaking seals, corrosion, or a damaged impeller.

3. Do your raw water pumps come with impellers and seals?

Most pumps come pre-assembled with impellers and seals installed. We also sell impeller kits and seal kits separately for maintenance.

4. How often should I replace the impeller in a raw water pump?

Impellers should generally be replaced every 200–300 hours of operation or annually, depending on usage and water quality.

5. Are the pumps suitable for continuous-duty marine use?

Yes. Our raw water pumps are built for continuous-duty marine environments and constructed from corrosion-resistant materials designed for saltwater exposure.

Freshwater Pump for Cummins QSK 19 – FAQs

1. What role does the freshwater pump play in the QSK 19 cooling system?

The freshwater pump circulates coolant through the engine block and cylinder heads, transferring heat to the heat exchanger or radiator for removal.

2. What symptoms indicate a failing freshwater pump?

Common indicators include coolant leaks, overheating, bearing noise, reduced coolant flow, or a wobbling pulley.

3. Do the freshwater pumps include gaskets and seals?

Yes. Most freshwater pumps come with installation gaskets and seal rings. Replacement seal kits are also available.

4. Are your freshwater pumps suitable for marine and industrial engines?

Yes. All of our pumps are compatible with both marine and industrial QSK 19 configurations and rated for continuous-duty operation.

5. Can I install the pump without removing other major engine components?

Yes. In most QSK 19 engines, the freshwater pump is mounted externally and can be serviced or replaced using standard tools without removing major components.

Oil Pump for Cummins QSK 19 – FAQs

1. What type of oil pump is used in the QSK 19 engine?

The QSK 19 typically uses a gear-driven oil pump that maintains system oil pressure and lubrication for critical engine components.

2. How do I know if the oil pump is failing?

Look for low oil pressure warnings, unusual engine noise, poor lubrication, or excessive engine wear. Immediate inspection is required if any of these occur.

3. Are oil pumps sold with installation gaskets and seals?

Gaskets are typically sold separately, but we offer complete kits with matching installation components.

4. How often should the oil pump be inspected or replaced?

Inspect the oil pump during major services or rebuilds (every 10,000+ hours). Replace it if there's scoring, wear, or performance loss.

5. Is the oil pump compatible with both marine and industrial QSK 19 engines?

Yes. Our oil pumps are engineered to fit both marine and industrial variants of the QSK 19.

Gasket Sets for Cummins QSK 19 – FAQs

1. What’s included in a full engine gasket set for the QSK 19?

A full gasket set typically includes:

  • Cylinder head gaskets

  • Valve cover gaskets

  • Oil pan and timing cover gaskets

  • Exhaust and intake manifold gaskets

  • Water pump and thermostat seals

  • O-rings and sealing washers

2. Do you offer top-end or lower-end gasket sets separately?

Yes. We offer top-end, lower-end, and complete engine gasket kits depending on the scope of your repair or rebuild.

3. Are your gaskets marine-grade and heat-resistant?

Yes. All gaskets are designed to withstand high pressure, temperature, and saltwater exposure in marine or industrial conditions.

4. Can I purchase individual gaskets if I don’t need a full set?

Yes. Most major gaskets can be ordered individually, including cylinder head, oil pan, intake, and exhaust manifold gaskets.

5. How should I store unused gaskets from a full kit?

Store gaskets flat in a dry, temperature-stable area away from oil, heat, and sunlight to prevent warping or degradation.

Additional Resources

 Marine Cummins QSK19 Component Maintenance Life

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