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Cummins QSC 8.3L Turbo Assembly 2011-2020: OEM 5459639RX

CUMMINS QSC 8.3L TURBO ASSEMBLY 2011-2020: OEM 5459639RX

Shipping ICON

ORDERS PLACED BEFORE 3PM EST WILL SHIP SAME DAY

WARRANTY ICON

WARRANTY
1M MILES OR 1 YEAR

$5,595.00

CORE CHARGE:

$1,200.00
iCORE DISCLAIMER: The CORE charge is a 30 day hold and will not be processed as long as the CORE is returned within 30 days. If you do not have a CORE or fail to return the CORE within 30 days, the CORE charge hold amount will be processed at that time.

AVAILABILITY IN STOCK
OEM NUMBER5459639RX
PART TYPETurbo Assembly
BRANDTamerx Diesel Products
ENGINE MAKECummins
ENGINE TYPEQSC 8.3L
YEAR2011-2020
PART NUMBER5459639RM-WA
APPLICATION NOTESKomatsu
ADDITIONAL NOTESHE431VH, Pneumatic Actuator

PRODUCT DESCRIPTION

This is a Remanufactured, Tamerx Turbo Assembly, Tamerx part number 5459639RM-WA ( OEM Part Number 5459639RX ).This part is primarily made for a Cummins QSC 8.3L, production years 2011-2020, and comes with a One Million Miles or One Year Warranty. For additional warranty info Click Here

Additional Notes: HE431VH, Pneumatic Actuator

OEM NUMBERS

Primary OEM5459639RX
Additional OEM2881949, 3773550, 5354639, 5354662, 5354663, 5354663H, 5459639RX, 5552068, 5552077

ADDITIONAL DETAILS

CONDITIONRemanufactured
UPC / Barcode00840490542518
WEIGHT48.00 LBS

SHIPPING OPTIONS

Ship Weight : 48.00 LBS
UPS Ground, 2nd Day Air, Next Day Air

SHIPPING POLICY

Tamerx Diesel Products ships via UPS Ground. Next day air shipping can be arranged for a reasonable price of anywhere from $50.00 - $100.00 depending on the weight of the product and your location. We will do everything we can to make sure that you get the service you need. We understand how important it is to receive your order as quickly as possible.
In most cases Tamerx Diesel Products only needs one address, as long as your product is shipping to the same location as your billing information. In order to eliminate credit card fraud, your billing information must match the credit card you provide.

The terms, conditions, and details of our warranty vary from product to product. Specific warranty details can be found below.

Tamerx Diesel Products provides a replacement warranty on all of our parts. The duration and mileage limitations of the warranty vary by product and are specified on the product's detail page/item listing.

Please note that the warranty covers replacement of the part and the cost of shipping the replacement part to you only. It does not cover any shop, labor, towing, or any similar or related costs. This is not a "money back guarantee".

If you experience a problem with your part or it is not functioning properly, the correct warranty procedure is to call us at (510) 257-1777 (8:00 AM - 5:00 PM ET Monday through Friday). Be sure to have your order number and/or other relevant order information ready so we can easily locate your order and resolve your issue as quickly as possible. From that point, we will review with you any troubleshooting steps that may need to be taken and other areas or systems that can be checked to rule out external problems contributing to your part's issue. If a replacement is determined to be necessary, we will then arrange for your replacement part to ship out ASAP and issue any necessary return shipping labels and/or documents.

As is the case for the majority of the diesel products sold on Tamerx Diesel Products, your part's warranty is active as soon as you install it. In some other cases, warranty activation is contingent upon you sending us your core (i.e., your old part). Tamerx Diesel Products will provide you a return shipping label for parts that have a warranty with a core return condition. When we have received your core return, the part's warranty coverage begins. We reserve the right to void the product warranty if your core is not received within the allotted time, or if it isn't received at all. If the warranty for the diesel part you are purchasing has a core return requirement, it will be clearly noted on the product detail page/item listing.

What is a Core Charge?

A core charge (also called "core deposit") is similar to the deposit you might pay for a can or bottle of soda and is a standard requirement in the auto parts industry. For example, in many states, to promote recycling, you pay a deposit when you purchase a can of soda and receive your deposit back when you return the empty can. Many automotive parts have a core charge, or core price, that works in essentially the same way as a soda can deposit.

30 Day Core Charge Hold

You authorize Tamerx Diesel Products, to hold your credit card for the specified core charge amount and that you agree to return your core with 30 days of receiving the purchased part. When we have received your core return, the hold is released and the core charge payment is canceled.

The customer, or parts buyer, is responsible for any shipping costs associated with core returns unless otherwise specified in the product listing/detail page. Tamerx Diesel Products offers prepaid UPS shipping labels (SKU numbers UPS-CR1 and UPS-CR2) for use in returning your core that are available for purchase on our website during your shopping/order process.

The shipping label you will need to use for the core return is dependent upon what part you are purchasing. UPS-CR1 is good for cores weighing up to 20 pounds. UPS-CR2 is appropriate for shipping cores weighing 21 pounds or more. You must include enough information with the core return that clearly identifies it as a.) a Core Return, and b.) contains enough information we can use to clearly associate the core return with your order. Including a copy of the invoice or packing slip that came with the original shipment, clearly marked "Core Return", is ideal. Alternately, you can include a note marked as "Core Return" that includes your order number, full name and address, and phone number or other contact information. Failure to include this information with your returned core will most likely delay any due core credit being issued and/or delay any applicable warranty activation. Core returns need to be for the exact part purchased and cannot be damaged. Substituting another part in place of the part you have purchased is not acceptable.

All fluids must be drained.

If you have purchased a set or a parts package, you will need to return cores for all components of the set. For example, if you have purchaed a high pressure oil pump with an IPR valve, you will need to return both HPOP and IPR valve cores to receive proper credit. If you have purchased an EGR cooler/EGR valve package, your core return must consist of an EGR cooler core and an EGR valve core, or core credit will not be given.

Core Charges are often mandated by state legislature, and, as such, the actual core charge and taxes on the charge may vary depending on the state in which you buy your part. The Tamerx Diesel Products core charge presented to you online today with your item is representative of the most common core charge.


Engineered for Cummins QSC 8.3L engines built between 2011 and 2020, the Turbo Assembly OEM 5459639RX ensures reliable airflow and efficient combustion. This genuine OEM component is manufactured to strict specifications, providing accurate fitment and dependable performance in heavy-duty applications. By maintaining proper turbocharger function, it supports emissions compliance and consistent engine operation. Built with durability in mind, it withstands the rigorous demands of construction, industrial, and on-highway use, offering long-term reliability. For operators and fleets, this turbo assembly delivers OEM-backed quality and trusted service life.

FITMENT CHART

YEARMAKEENGINE(S)
2011Cummins QSC 8.3L
2012Cummins QSC 8.3L
2013Cummins QSC 8.3L
2014Cummins QSC 8.3L
2015Cummins QSC 8.3L
2016Cummins QSC 8.3L
2017Cummins QSC 8.3L
2018Cummins QSC 8.3L
2019Cummins QSC 8.3L
2020Cummins QSC 8.3L

PEOPLE ALSO ASKS | BLOG(S)

The Cummins QSC 8.3L engine is widely used in heavy-duty applications where efficiency, durability, and compliance are critical. At the heart of its air management system is the Turbo Assembly OEM 5459639RX, designed to maximize combustion efficiency and keep the engine performing under demanding conditions.

What the Turbo Assembly Does

  • Boosts Airflow
    • Harnesses exhaust gases to spin a turbine that powers the compressor, forcing more air into the engine’s intake.
  • Improves Combustion
    • Increases the oxygen available in each cylinder, allowing fuel to burn more completely and efficiently.
  • Supports Power Under Load
    • Maintains strong torque and responsiveness during heavy hauling, climbing, or acceleration.
  • Optimizes Fuel Use
    • Helps the engine achieve better fuel economy by balancing air and fuel ratios more precisely.
  • Reduces Emissions
    • Contributes to cleaner combustion, helping the engine meet environmental standards.
  • Ensures Pressure Control
    • Manages boost and backpressure to protect the engine and keep it running smoothly across all RPM ranges.

The Cummins QSC 8.3L Turbo Assembly OEM 5459639RX is more than just a performance component—it’s a critical system that enables reliability, efficiency, and compliance. Without it, the engine would lose power, efficiency, and the ability to meet modern emission standards.

A turbo assembly is designed to improve efficiency and keep your engine running smoothly. But like any mechanical component, it has a limited service life. Understanding how long a turbo typically lasts — and what factors shorten its lifespan — can help you plan ahead and avoid costly repairs.

Average Lifespan of a Turbo Assembly

Most turbo assemblies last 100,000 to 150,000 miles under normal driving conditions. In well-maintained vehicles, a turbo can last even longer. However, neglect, harsh environments, or poor maintenance can cause premature failure.

Factors That Affect Turbo Lifespan:

  • Oil quality and changes
    • Dirty or low oil leads to faster wear
  • Driving habits
    • Aggressive acceleration and heavy loads stress the turbo
  • Engine maintenance
    • Clogged air filters or exhaust restrictions shorten service life
  • Operating environment
    • Extreme heat, dust, or debris increase the risk of damage
  • Cooling practices
    • Shutting off the engine immediately after hard driving can harm the turbo

How to Extend Turbo Life

To maximize the life of your turbo assembly:

  • Keep up with regular oil and filter changes
  • Use high-quality oil and fuel
  • Allow the engine to idle briefly after long drives to cool the turbo
  • Inspect for oil leaks, smoke, or unusual noises early

A turbo assembly typically lasts well over 100,000 miles, but its longevity depends heavily on care and maintenance. Proper servicing and smart driving habits are the best ways to keep your turbo operating reliably for years to come.

It controls exhaust-driven airflow to maintain engine efficiency and emissions balance.

Yes, restricted airflow can cause excess strain and shorten the turbo’s lifespan.

A high-pitched whine or metallic grinding noise can signal internal bearing wear.

Allowing the engine to idle briefly before heavy use helps ensure proper oil circulation.

Cummins Turbo Assemblys

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