The Cummins K19 is a 19-liter inline-six diesel engine built for heavy-duty work. It has been used in mining equipment, marine applications, industrial systems, and other equipment where high torque and long operating hours matter.
The K19 family includes several configurations, including the KT19, KTA19, and KTTA19. Their basic architecture is closely related, but the turbocharging, aftercooling, ratings, and applications can differ. Cummins also publishes separate specifications for different versions, so the K19 name does not represent one single engine configuration.
What Is the Cummins K19?
The Cummins K19 is part of the larger Cummins K Series. It is a six-cylinder, four-stroke diesel with a displacement of approximately 19 liters. The engine uses a 159 mm bore and 159 mm stroke, giving it the square design associated with this engine family.
Cummins lists the K19 for mining applications with ratings from 450 to 700 HP, depending on the configuration. The published range includes KT19, KTA19, and KTTA19 versions.
The engine uses a PT fuel system and is designed around a number of features intended for demanding operating conditions. These include a fillet-hardened crankshaft, galley-cooled pistons, prelubrication equipment, and turbocharging.
KT19, KTA19 and KTTA19
KT19
The KT19 is a turbocharged version of the K19 family. Cummins lists a 450 HP mining rating for one KT19 configuration.
Compared with later aftercooled versions, its configuration is simpler. The exact equipment and rating still depend on the engine specification.
KTA19
The KTA19 Cummins engine is one of the most widely recognized versions of the K19 family. The “A” designation refers to aftercooling.
Cummins lists several KTA19 ratings. Its mining specifications include a 600 HP version and a 525 HP version, with different torque characteristics depending on the rating. KTA19 engines have also been used in marine applications. Cummins publishes separate marine specifications for KTA19 engines, including propulsion and auxiliary applications.
KTTA19
The KTTA19 adds a second turbocharger arrangement to the K19 platform. Cummins lists a 700 HP KTTA19 mining rating with peak torque of 2,014 lb-ft.
This configuration is associated with higher-output applications and should be treated as a specific engine configuration rather than simply assuming that every K19 can produce the same output.
Cummins K19 Engine Specifications
Specifications
| Engine Type | Inline 6 | |
| Displacement | 1156 cu in | 19 liters |
| Advertised Horsepower | 450-700 hp | 336-522 kW |
| Peak Torque | 1125-2014 lb-ft | 1526-2731 N•m |
| Bore and Stroke | 6.25 in x 6.25 in | 159 mm x 159 mm |
| Aspiration | Turbocharged and Aftercooled | |
| Oil System Capacity | 80 U.S. qt | 76 liters |
| Coolant Capacity | 44 U.S. qt | 42 liters |
| Length | 62.0 in | 1574 mm |
| Width | 31.7-38.4 in | 805-975 mm |
| Height | 54.0-64.5 in | 1371-1638 mm |
| Wet Weight | 6000-6170 lb | 2722-2799 kg |
Cummins K19 Applications
The Cummins K19 has a long history in heavy-duty equipment.
Mining Equipment
Mining is one of the main applications associated with the K19. Cummins lists the engine for equipment such as haul trucks, excavators, blast hole drills, and wheeled loaders.
These machines place very different demands on an engine from highway vehicles. Long working cycles, high loads, dust, heat, and difficult operating conditions all require a power unit designed for sustained use. The K19’s large displacement and inline-six layout make it suitable for this type of work.
Marine Applications
K19-family engines are also found in marine equipment. Cummins publishes KTA19 marine specifications covering propulsion and auxiliary applications. Marine versions use the same basic 19-liter, six-cylinder architecture but have equipment and ratings suited to marine installations. Cooling arrangements, accessories, ratings, and other installation details can differ.
Industrial and Generator Applications
The K19 platform has also been used in industrial power systems and generator applications. In these installations, the engine may operate at a relatively steady load for extended periods. The exact rating depends on the generator or industrial configuration.
Cummins K19 Engine Parts
A K19 overhaul or repair can involve anything from a single fuel-system component to major internal engine parts. The current K19 range supplied by YIZHI POWER covers several of these areas.
(1)K19 Fuel Injectors
The fuel injector plays a central role in the K19 fuel system. It meters fuel into the combustion process, so its condition has a direct effect on engine operation.
YIZHI POWER currently lists several K19 injector references, including:
- K19 Injector 4307331
- K19 Injector 2882077
- K19 Injector 4955524
(2)K19 Cylinder Head
The cylinder head contains the valves, ports, and other components that control the movement of air and exhaust gases through the engine.
YIZHI POWER currently supplies the K19 Cylinder Head 3646323. A complete head assembly is also listed under part number 4089207.
Cylinder-head work is often part of a larger repair. The condition of the pistons, liners, bearings, valves, and related components usually becomes clearer once the engine has been opened.
(3)K19 Piston Kits
The piston assembly operates under high temperature and mechanical load, particularly in heavy-duty applications.
YIZHI POWER lists these two K19 piston kits:
- 3631244
- 3631241
It also lists the individual K19 Engine Piston 4910463.
(4)K19 Oil Cooler and Cooling Components
The cooling system keeps engine temperatures within the required operating range, while the oil cooler controls lubricant temperature.
The current K19 product range includes the K19 Oil Cooler Kit 3804934. YIZHI POWER also supplies a K19 Water Pump Seal 3634007 and K19 Thermostat 3076489.
These parts serve different functions. The thermostat controls coolant flow as the engine reaches operating temperature, while the water pump seal helps maintain the integrity of the cooling system.
(5)K19 Starting Motor and Belt Drive
The starting system is another area where relatively small components can affect engine operation.
YIZHI POWER lists the K19 Starting Motor 3004699 and K19 Belt Tensioner 2888892.
The belt drive also includes components such as the alternator pulley. A K19 alternator pulley, part number 3002331, is included in the current product range.
(6)K19 Main Bearing and Camshaft Components
The lower engine contains some of the most heavily loaded components in the K19.
YIZHI POWER currently lists K19 main bearing caps under part numbers 205075, 205022, and 205021, as well as the K19 Camshaft Gear 4953321 and K19 Connecting Rod Bearing 205840.
These parts are closely connected to the crankshaft and valve timing system. Their condition becomes particularly important during a major engine overhaul.
Cummins K19 Engine Assembly
For some applications, rebuilding an existing engine is not the most practical route. A complete replacement assembly can make more sense when the original engine has extensive internal damage or when downtime needs to be kept under control.
YIZHI POWER currently offers a brand-new Cummins K19 Engine Assembly. The listed applications include mining equipment, construction machinery, industrial power systems, and generator applications.
The exact engine configuration still matters. A mining engine, marine engine, and generator engine can have different ratings and equipment even when they belong to the same K19 family.
Cummins K19 Maintenance
The maintenance requirements for a K19 depend on the engine configuration and its working environment. A mining engine working long shifts under heavy load will experience different conditions from an auxiliary marine engine. Several systems deserve particular attention.
Lubrication System
Oil level, oil condition, and oil pressure are important indicators of engine condition. Changes in oil consumption or pressure can point to problems in different areas of the engine. The oil cooler is also part of the overall lubrication system. A problem with oil temperature can affect the way the engine operates under load.
Cooling System
The cooling system includes more than the radiator. The water pump, thermostat, seals, hoses, and related passages all contribute to temperature control. A coolant leak or abnormal temperature can have several possible causes. Replacing one visible component does not always solve the underlying problem.
Fuel System
The K19 fuel system uses Cummins’ PT system. Injectors, fuel-control components, and related hardware all have a role in delivering the correct amount of fuel. Poor starting, unstable operation, smoke, or reduced power can come from different causes. Fuel-system components should be evaluated as part of the overall engine condition rather than assuming that one component is responsible.
Air and Turbocharging System
Turbocharging is an important part of K19 performance. Air crossover components and the turbocharger system need to remain in good condition, particularly when the engine is working under high load. A restriction, air leak, or turbocharger problem can affect combustion and power output.
Cummins K19 Overhaul
A Cummins K19 overhaul can range from relatively limited cylinder-head work to a complete rebuild of the engine. The scope normally becomes clear after inspection. Cylinder condition, piston wear, bearing condition, crankshaft surfaces, and the condition of the head all affect the final repair plan.
YIZHI POWER’s current K19 parts range includes components used in different stages of this type of work, including piston kits, cylinder heads, bearings, camshaft components, oil-cooling components, and fuel-system parts. The important point is that a K19 overhaul is not one fixed parts list. The required components depend on the engine’s condition and the configuration being repaired.
Cummins K19 Engine Parts at YIZHI POWER
| Part Category | Product | Part Number |
| Fuel System | K19 Injector | 4307331 |
| Fuel System | K19 Injector | 2882077 |
| Fuel System | K19 Injector | 4955524 |
| Cylinder Head | K19 Cylinder Head | 3646323 |
| Piston | K19 Engine Piston Kit | 3631244 |
| Piston | K19 Engine Piston Kit | 3631241 |
| Cooling System | K19 Oil Cooler Kit | 3804934 |
| Cooling System | K19 Thermostat | 3076489 |
| Starting System | K19 Starting Motor | 3004699 |
| Belt Drive | K19 Belt Tensioner | 2888892 |
| Engine Assembly | K19 Engine Assembly | — |
Conclusion
The Cummins K19 has remained an important heavy-duty diesel platform because of its large displacement, inline-six design, and wide range of applications. The family includes KT19, KTA19, and KTTA19 configurations, with different ratings and equipment for different operating conditions. Marine and industrial versions add further variations to the platform.
Today, K19 engines can still be found in demanding equipment where the engine has to deliver substantial power for long periods. Parts availability remains important for keeping these machines in service, particularly when an engine reaches the point where major components need to be replaced.
YIZHI POWER supplies K19 engine parts including injectors, cylinder heads, piston kits, bearings, oil cooler components, cooling-system parts, starting motors, and other replacement components. Complete K19 engine assemblies are also available for replacement applications.
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- Email: info@yzdlparts.com
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