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Cummins ISM Turbo Assembly 2000-2004: OEM 3800856RX

CUMMINS ISM TURBO ASSEMBLY 2000-2004: OEM 3800856RX

Shipping ICON

ORDERS PLACED BEFORE 3PM EST WILL SHIP SAME DAY

WARRANTY ICON

WARRANTY
1M MILES OR 1 YEAR

$1,595.00

-
+

CORE CHARGE:

$250.00
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 3800856RX
PART TYPE Turbo Assembly
BRAND Tamerx Diesel Products
ENGINE MAKE Cummins
ENGINE TYPE ISM
YEAR 2000-2004
PART NUMBER 3800856RM
ADDITIONAL NOTES HX55W, Waste Gated

PRODUCT DESCRIPTION

This is a Remanufactured Tamerx Turbo Assembly, Tamerx part number 3800856RM ( OEM Part Number 3800856RX ). 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 ISM, production years 2000-2004, and comes with a One Million Miles or One Year Warranty. For additional warranty info Click Here

Additional Notes: HX55W, Waste Gated

OEM NUMBERS

Primary OEM 3800856RX
Additional OEM 3592778, 3592779, 3592783, 3800856RX, 3899856, 4033817, 4039197, 4046027, 4046030

ADDITIONAL DETAILS

CONDITION Remanufactured
UPC / Barcode
WEIGHT 44.00 LBS

SHIPPING OPTIONS

Ship Weight : 44.00 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 3800856RX Turbo Assembly is built for Cummins ISM engines manufactured between 2000 and 2004, offering a factory-specific solution for maintaining proper air intake and exhaust flow. Designed to match original engineering specifications, this unit supports efficient engine operation by regulating airflow to the combustion chamber. Its direct-fit configuration ensures compatibility with existing engine components, allowing for smooth installation without custom adjustments. This turbo assembly helps sustain consistent engine output across varying load demands, making it suitable for on-road commercial vehicles and heavy-duty applications. It’s a dependable replacement choice for those seeking long-term reliability and system continuity.

FITMENT CHART

YEAR MAKE ENGINE(S)
2000 Cummins ISM
2001 Cummins ISM
2002 Cummins ISM
2003 Cummins ISM
2004 Cummins ISM

PEOPLE ALSO ASKS | BLOG(S)

The turbo assembly OEM 3800856RX plays a critical role in the performance of Cummins ISM engines from 2000 to 2004. This turbocharger boosts the engine's efficiency and power by forcing extra air into the combustion chamber, leading to a more robust and efficient fuel burn.

Key Functions of the Turbo Assembly

  • Air Intake
    • The turbocharger draws in air from the environment, compressing it to higher pressures before delivering it to the engine's intake manifold.
  • Exhaust Gas Utilization
    • It uses exhaust gases to spin the turbine wheel, which is connected to the compressor wheel, ensuring continuous air compression.

Benefits of a Functioning Turbo Assembly

  • Increased Power
    • By providing more air, the engine can burn more fuel, producing more power.
  • Improved Fuel Efficiency
    • More complete combustion means less wasted fuel, enhancing overall fuel economy.
  • Reduced Emissions
    • Efficient combustion leads to fewer unburned particles and pollutants, contributing to a cleaner engine performance.

Signs of a Malfunctioning Turbo Assembly

  • Loss of power
  • Excessive exhaust smoke
  • Unusual noises from the turbo

Maintaining the turbo assembly OEM 3800856RX in peak condition ensures that your Cummins ISM engine runs smoothly and efficiently. Regular inspections and timely replacements, when necessary, can prevent costly repairs and downtime. 

A failing turbo assembly can significantly impact your diesel engine's performance. Recognizing the symptoms early can save you from costly repairs and prolonged downtime. Here’s what to look out for:

  • Reduced Engine Power
    • One of the most noticeable signs of a failing turbo assembly is a sudden drop in engine power. If your vehicle struggles to accelerate or feels sluggish, it could indicate turbo issues.
  • Increased Exhaust Smoke
    • A malfunctioning turbo can cause your vehicle to emit excessive exhaust smoke. This smoke may appear as:
      • Blue smoke: Indicates oil leakage into the combustion chamber.
      • Black smoke: Suggests a fuel-to-air ratio imbalance.
      • White smoke: Points to coolant entering the combustion chamber.
  • Unusual Noises
    • Strange noises coming from your engine, such as whining or grinding sounds, often signal turbo problems. These noises typically occur when the turbo’s internal components are damaged or worn out.
  • Check Engine Light
    • Modern vehicles are equipped with sensors that monitor turbo performance. If the turbo fails, the check engine light may illuminate, prompting further investigation.
  • Oil Leaks
    • Oil leaks around the turbocharger or exhaust manifold are another common symptom of a failing turbo assembly. Leaks can lead to lower oil levels and further damage to engine components.
  • Decreased Fuel Efficiency
    • A failing turbo can cause your engine to consume more fuel than usual. If you notice a sudden drop in fuel efficiency, it’s wise to inspect the turbo assembly.

Ensure the oil system is clean, replace gaskets, and torque all fasteners to manufacturer specifications.

This turbo compresses intake air to support proper fuel combustion and engine airflow management.

Yes, damaged turbo seals can allow oil to enter the intake or exhaust, leading to higher oil consumption.

Installation time varies by equipment layout but generally takes 4 to 6 hours with proper tools and access.

Cummins Turbo Assemblys