Cummins QSK60 & QSK95 Turbochargers: Part Numbers, Identification & Replacement Guide
Cummins QSK60 and QSK95 engines are large V16 diesel platforms used in demanding marine and heavy-duty applications. On these engines, the turbocharging system plays a critical role in supplying the airflow required for combustion, engine response and rated power.
When sourcing a Cummins QSK turbocharger, however, the engine model alone is not enough for reliable identification.
QSK60/QSK95 parts references include several turbocharger families and configurations, including HX83 water-cooled, HX82 water-cooled, HX82 dry and HX60 units. These different assemblies should not be assumed to be interchangeable simply because they are associated with the QSK60 or QSK95 engine families.
For accurate identification, start with:
Engine model + Engine Serial Number (ESN) + existing turbocharger part number + turbocharger identification data
Cummins QSK60 Marine Engine Parts
Cummins QSK95 Marine Engine Parts
Cummins QSK60 & QSK95 Turbocharger Reference Part Numbers
The following turbocharger references are documented for Cummins QSK60/QSK95 applications.
They should be treated as application references rather than one interchangeable group. The exact replacement should be confirmed against the individual engine and existing turbocharger.
| Part NumberTurbo FamilyConfiguration | ||
| 4089581 | HX83 | Water-cooled |
| 4090064 | HX83 | Water-cooled |
| 4089729 | HX83 | Water-cooled |
| 4089296 | HX83 | Water-cooled |
| 4024975 | HX83 | Water-cooled |
| 4955689 | HX83 | Water-cooled |
| 4089730 | HX83 | Water-cooled |
| 4025354 | HX82 | Water-cooled |
| 3800499 | HX82 | Dry |
| 4089498 | HX82 | Dry |
| 4089499 | HX82 | Dry |
| 4955914 | HX82 | Dry |
| 4955791 | HX82 | Dry |
| 4955294 | HX82 | Dry |
| 4955289 | HX82 | Dry |
| 4089935 | HX82 | Dry |
| 4955249 | HX82 | Dry |
| 4089808 | HX60 | Verify exact configuration |
| 3800830 | HX60 | Verify exact configuration |
| 2882097 | — | Turbocharger kit |
Important Compatibility Note
These are QSK60/QSK95 turbocharger reference numbers. This does not mean every number fits every QSK60 or QSK95 engine.
Do not assume that different numbers are interchangeable or supersessions of one another unless the relationship has been verified for the specific engine.
HX83 Water-Cooled Cummins QSK Turbochargers
The following references are associated with HX83 water-cooled turbochargers:
4089581
4090064
4089729
4089296
4024975
4955689
4089730
Although these turbochargers share the HX83 family designation, that alone does not establish interchangeability.
Different assemblies can have differences in areas such as:
- Compressor specification
- Turbine specification
- Housing configuration
- Engine application
- Engine rating
- Production configuration
For replacement purposes, compare the existing turbocharger part number with the engine identification before ordering.
HX82 Water-Cooled Cummins QSK Turbocharger
4025354 is associated with an HX82 water-cooled turbocharger configuration for QSK60/QSK95 applications.
The water-cooled designation is important because the QSK60/QSK95 parts references also include several dry HX82 configurations.
An HX82 water-cooled turbocharger should not automatically be replaced with an HX82 dry turbocharger simply because both belong to the HX82 family.
HX82 Dry Cummins QSK Turbochargers
The following references are associated with HX82 dry turbocharger configurations:
3800499
4089498
4089499
4955914
4955791
4955294
4955289
4089935
4955249
Again, these numbers should not be treated as automatically interchangeable.
The HX82 designation identifies the turbocharger family, but the complete assembly specification still matters.
HX60 Cummins QSK Turbochargers
Two additional QSK60/QSK95 turbocharger references are:
4089808
3800830
These are associated with the HX60 turbocharger family.
For these references, the exact configuration should be confirmed against the individual engine and existing turbocharger before ordering.
Cummins QSK Turbocharger Kit 2882097
2882097 is associated with a QSK60/QSK95 turbocharger kit.
A turbocharger kit should not automatically be treated as the same thing as a complete turbocharger assembly.
Before ordering, confirm:
- Kit application
- Existing turbocharger
- Engine ESN
- Components included in the kit
- Required repair scope
This prevents a repair kit from being incorrectly ordered when a complete turbocharger assembly is actually required.
Complete Cummins QSK Turbocharger Part Number Reference
For quick searching, the references covered in this guide are:
4089581, 4090064, 4089729, 4089296, 4024975, 4955689, 4089730, 4025354, 3800499, 4089498, 4089499, 4955914, 4955791, 4955294, 4955289, 4089935, 4955249, 4089808, 3800830 and 2882097.
These numbers should always be verified against the specific engine before ordering.
Why Are There Different QSK Turbocharger Part Numbers?
A turbocharger should never be selected solely because an engine is identified as a QSK60 or QSK95.
Different turbocharger assemblies can exist because of differences in:
- Engine model
- Engine rating
- Application
- Compressor specification
- Turbine specification
- Housing configuration
- Cooling arrangement
- Exhaust arrangement
- Engine calibration
- Production revision
This explains why two turbochargers can look very similar while carrying different part numbers.
Physical fit does not establish technical compatibility.
A turbocharger must also provide the airflow and exhaust characteristics required by the specific engine configuration.
Cummins QSK60 vs QSK95 Turbochargers
The QSK60 and QSK95 are separate engine platforms and should be treated accordingly when identifying replacement parts.
The QSK60 is a V16 engine in approximately the 60-litre displacement class, while the QSK95 is a substantially larger V16 engine in approximately the 95-litre displacement class.
Browse Cummins QSK60 Marine Engine Parts
Browse Cummins QSK95 Marine Engine Parts
The fact that a turbocharger reference appears in QSK60/QSK95 parts information does not mean that every configuration of both engines uses that turbocharger.
Always identify the individual engine before selecting the replacement assembly.
Water-Cooled vs Dry QSK Turbochargers
One of the clearest differences within these QSK turbocharger references is the cooling configuration.
For example:
4025354 — HX82 water-cooled
while:
3800499, 4089498, 4089499, 4955914, 4955791, 4955294, 4955289, 4089935 and 4955249 — HX82 dry
The fact that these turbochargers all belong to the HX82 family does not make them equivalent.
Cooling arrangement is also only one part of the specification.
Other differences can exist in:
Compressor configuration + turbine configuration + housings + connections + engine application
This is why identification should be based on the complete turbocharger and engine information.
How to Identify the Correct Cummins QSK Turbocharger
A request stating:
“Need Cummins QSK turbocharger.”
does not provide enough information for reliable identification.
A better inquiry contains:
Engine model: Cummins QSK60 or QSK95
Engine Serial Number: XXXXXXXX
Existing turbocharger P/N: XXXXXXXX
Turbocharger identification: XXXXXXXX
Engine rating: XXXXX kW @ XXXX rpm
Quantity: X
Application: Marine / other
Delivery destination: XXXXX
Clear photographs can also help.
Useful photographs include:
- Turbocharger identification plate
- Complete turbocharger
- Compressor housing
- Turbine housing
- Exhaust connection
- Cooling connections where applicable
- Existing part-number markings
If the turbocharger has previously been replaced, the engine ESN becomes particularly important because the unit currently installed may not necessarily be the engine's original turbocharger.
Engineer Tip: Low Boost Does Not Automatically Mean Turbocharger Failure
A drop in boost pressure deserves investigation, but it does not automatically prove that the turbocharger has failed.
The complete air, combustion and exhaust path should be considered.
A simplified diagnostic path is:
Air intake → turbocharger → charge-air cooling → intake manifold → cylinders → exhaust
Possible causes of reduced boost can include:
- Restricted air intake
- Charge-air leakage
- Aftercooler problems
- Exhaust leakage
- Exhaust restriction
- Fuel-system problems
- Combustion problems
- Turbocharger deterioration
- Electronic engine derating
- Abnormal engine loading
Compare:
Boost pressure + engine RPM + engine load + exhaust temperatures + smoke condition
The relationship between several operating parameters usually provides more diagnostic information than boost pressure alone.
Why Can a Replacement QSK Turbocharger Fail Again?
Sometimes the turbocharger is the result of another engine problem rather than the original cause.
Before installing a replacement turbocharger, investigate relevant areas such as:
- Lubricating-oil supply
- Turbocharger oil drain
- Oil condition
- Intake restriction
- Foreign-object damage
- Exhaust restriction
- Abnormal exhaust temperatures
- Charge-air-system condition
For example, installing a new turbocharger without correcting an oil-supply problem can expose the replacement unit to the same failure mechanism.
Finding the original cause is therefore an important part of a successful turbocharger replacement.
Genuine, OEM-Sourced, Aftermarket & Remanufactured QSK Turbochargers
Replacement turbochargers can potentially be available through several supply channels.
Genuine Parts
Components supplied through the genuine manufacturer's parts system.
OEM-Sourced Parts
Components sourced from an original equipment manufacturer where the manufacturer, specification and application can be properly established.
Aftermarket Turbochargers
New replacement turbochargers manufactured outside the genuine parts supply chain.
An aftermarket turbocharger should not be selected solely because it is advertised as:
“Fits Cummins QSK60”
or:
“Fits Cummins QSK95.”
Correct technical compatibility should still be established against the original turbocharger and engine configuration.
Remanufactured Turbochargers
Previously used turbochargers restored through a defined remanufacturing process for further service.
Where a Reman reference is available, it should be verified against the original turbocharger and exact engine application.
Are These Cummins QSK Part Numbers Supersessions?
Not necessarily.
For example, do not automatically assume:
4089581 → 4090064 → 4089729
is a supersession chain simply because all three are associated with HX83 QSK60/QSK95 applications.
The same principle applies to the different HX82 references.
They can represent different assemblies rather than old and new versions of the same assembly.
A supersession should be confirmed against the specific original part number and engine build information.
Frequently Asked Questions
Is 4089581 a Cummins QSK Turbocharger?
4089581 is associated with an HX83 water-cooled turbocharger for QSK60/QSK95 applications.
Its compatibility with an individual engine should still be confirmed using the ESN and existing turbocharger information.
Is 4090064 an HX83 Turbocharger?
Yes. 4090064 is associated with an HX83 water-cooled QSK60/QSK95 turbocharger application.
Is 4025354 Water-Cooled?
Yes. 4025354 is associated with an HX82 water-cooled QSK60/QSK95 turbocharger configuration.
Is 3800499 a Dry Turbocharger?
Yes. 3800499 is associated with an HX82 dry QSK60/QSK95 turbocharger configuration.
Are All HX82 Turbochargers Interchangeable?
No.
Sharing the HX82 family designation does not establish that two complete turbocharger assemblies have identical specifications.
Are QSK60 and QSK95 Turbochargers the Same?
Not automatically.
Some turbocharger references are associated with QSK60/QSK95 applications, but the exact turbocharger should be identified against the specific engine.
Can I Use an Aftermarket Cummins QSK Turbocharger?
A correctly specified aftermarket turbocharger may be suitable for certain applications.
Compatibility should be established against the technical requirements of the original turbocharger and exact engine configuration.
Are Remanufactured Cummins QSK Turbochargers Available?
Remanufactured options may be available for selected assemblies.
The correct Reman reference should be established from the engine and existing turbocharger rather than assumed from another QSK application.
What Information Is Needed to Identify a QSK Turbocharger?
The most useful information is:
Engine model + ESN + existing turbocharger part number + turbocharger identification + engine rating + photographs
This provides a much stronger basis for identification than the engine model alone.
Request Cummins QSK60 & QSK95 Turbochargers
Alfa Marine Spare Parts can assist with inquiries for Cummins QSK60 and QSK95 turbochargers, turbocharger components, genuine, OEM-sourced, aftermarket and remanufactured options, subject to correct identification and availability.
For faster identification, provide:
Engine model:
Engine Serial Number:
Existing turbocharger part number:
Turbocharger identification:
Engine rating:
Quantity:
Delivery destination:
Photos: Where available
Cummins QSK60 Marine Engine Parts
Cummins QSK95 Marine Engine Parts
Browse Marine Spare Parts
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Email: request@alfamarinespareparts.com
Correct identification should always come before ordering. With QSK turbochargers, the engine model, ESN and existing turbocharger number provide a much stronger basis for selecting the correct replacement than appearance or engine family alone.