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Cummins ISC 8.3L Turbo Assembly 2004-2008: OEM 4089931RX

CUMMINS ISC 8.3L TURBO ASSEMBLY 2004-2008: OEM 4089931RX

Shipping ICON

ORDERS PLACED BEFORE 3PM EST WILL SHIP SAME DAY

WARRANTY ICON

WARRANTY
1M MILES OR 1 YEAR

$2,180.00

-
+

CORE CHARGE:

$400.00
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 NUMBER 4089931RX
PART TYPE Turbo Assembly
BRAND Tamerx Diesel Products
ENGINE MAKE Cummins
ENGINE TYPE ISC 8.3L
YEAR 2004-2008
PART NUMBER 4089931RM
ADDITIONAL NOTES HX40W

PRODUCT DESCRIPTION

This is a Remanufactured Tamerx Turbo Assembly, Tamerx part number 4089931RM ( OEM Part Number 4089931RX ). All parts are proudly remanufactured in the U.S.A. to the highest of OEM standards, and improvements are often applied to the original design in the remanufacturing process. This part is primarily made for a Cummins ISC 8.3L, production years 2004-2008, and comes with a One Million Miles or One Year Warranty. For additional warranty info Click Here

Additional Notes: HX40W

OEM NUMBERS

Primary OEM 4089931RX
Additional OEM 4039918, 4039919, 4089931RX

ADDITIONAL DETAILS

CONDITION Remanufactured
UPC / Barcode
WEIGHT 38.00 LBS

SHIPPING OPTIONS

Ship Weight : 38.00 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.


The OEM 4089931RX turbo assembly is built for 2004-2008 Cummins ISC 8.3L engines, ensuring optimal airflow and reliable engine operation. Engineered to meet OEM specifications, it guarantees seamless compatibility and consistent working conditions. Constructed with high-quality materials, this turbo assembly is designed for durability and long-term reliability in demanding environments. Its direct-fit design simplifies installation, reducing downtime and ensuring a secure fit. Ideal for commercial, industrial, and heavy-duty applications, this component helps maintain smooth and efficient engine functionality.

FITMENT CHART

YEAR MAKE ENGINE(S)
2004 Cummins ISC 8.3L
2005 Cummins ISC 8.3L
2006 Cummins ISC 8.3L
2007 Cummins ISC 8.3L
2008 Cummins ISC 8.3L

PEOPLE ALSO ASKS | BLOG(S)

The Cummins ISC 8.3L engine relies on a robust turbocharger to enhance fuel combustion and optimize engine performance. Over time, turbos can wear out, leading to reduced engine efficiency and potential damage. The Cummins ISC 8.3L Turbo Assembly, OEM 4089931RX, is specifically designed for engines from 2004 to 2008, offering an ideal replacement for a worn or malfunctioning turbo. Keeping your turbocharger in good condition is crucial for maintaining the overall health of your engine.

  • Optimized Airflow for Efficient Combustion

    • The Cummins ISC 8.3L Turbo Assembly, OEM 4089931RX, ensures a steady flow of compressed air into the combustion chamber, which leads to better fuel combustion. This improved air intake helps the engine run more efficiently, reducing fuel consumption.

  • Reduces Engine Strain

    •  A well-functioning turbocharger reduces the strain on your engine by ensuring that the right amount of air is supplied. This can lead to smoother operation and prevent premature wear on engine components.

  • OEM-Approved Fit and Functionality

    • As an OEM part, the 4089931RX turbo assembly is manufactured to meet Cummins’ high standards. Using an OEM-approved turbo guarantees a perfect fit and compatibility with your engine, ensuring long-term durability and reducing the likelihood of malfunctions.

  • Prolongs Engine Life

    • A failing turbo can lead to overheating, increased emissions, and engine damage. By replacing your turbo assembly with the OEM 4089931RX, you can prevent these issues, extending the life of your engine and keeping it running reliably.

For Cummins ISC 8.3L engines from 2004 to 2008, the turbocharger plays a key role in maintaining engine efficiency and performance. Replacing a worn or damaged turbo with the Cummins ISC 8.3L Turbo Assembly, OEM 4089931RX, ensures optimal airflow, reduces engine strain, and prolongs engine life. At TamerX Diesel Parts, we offer high-quality OEM parts to keep your engine running at its best, ensuring long-term reliability and performance.

A turbo assembly plays a vital role in boosting engine power and efficiency by increasing airflow into the combustion chamber. However, when the turbo assembly starts to fail, it can lead to noticeable performance issues and even severe engine damage if left unaddressed. Identifying the symptoms of a failing turbo assembly early can save you from costly repairs and prolonged downtime.

  • Decreased Engine Power
    • A failing turbo assembly can cause a significant drop in engine power, making it difficult to accelerate or maintain speed, especially under load.
  • Excessive Exhaust Smoke
    • If the turbo assembly is failing, oil can leak into the exhaust system, causing thick smoke, often grey or blue, especially during acceleration.
  • Unusual Noises
    • A bad turbo often produces a loud whining or whistling noise due to damaged bearings or blades. Grinding or rattling sounds can also indicate internal damage.
  • Increased Oil Consumption
    • A damaged turbo may lead to oil leaks, resulting in frequent oil top-ups and visible oil pooling near the turbo.
  • Boost Pressure Loss
    • A failing turbo can struggle to generate adequate boost pressure, leading to reduced engine performance and sluggish response.
  • Check Engine Light
    • Turbo issues often trigger the check engine light, as the engine’s sensors detect irregular airflow or pressure levels.
  • Poor Fuel Efficiency
    • When the turbo is not working properly, the engine may burn more fuel to compensate for the loss of power, resulting in lower fuel efficiency.

A failing turbo assembly can significantly impact your vehicle’s performance, from reduced power to increased fuel consumption and oil leaks. Addressing these symptoms early is crucial to preventing more extensive engine damage and costly repairs. Regular maintenance and timely repairs will ensure your turbo assembly continues to deliver optimal performance and keeps your engine running smoothly.

 

Installation should be performed by a qualified technician to ensure proper fitment and function.​

With proper maintenance, the turbo assembly can last several hundred thousand miles, though actual lifespan depends on operating conditions and maintenance practices.

Following Cummins' maintenance schedule, typically every 15,000 miles, helps ensure proper lubrication of the turbo assembly.

Higher altitudes may reduce air density, but the turbocharger compensates by maintaining optimal airflow.​

Cummins Turbo Assemblys