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Cummins ISX DOC 2008-2010: OEM 4352289RX

CUMMINS ISX DOC 2008-2010: OEM 4352289RX

Shipping ICON

ORDERS PLACED BEFORE 3PM EST WILL SHIP SAME DAY

WARRANTY ICON

WARRANTY
1M MILES OR 1 YEAR

$2,495.00

CORE CHARGE:

$500.00
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 4352289RX
PART TYPE DOC
BRAND
ENGINE MAKE Cummins
ENGINE TYPE ISX
YEAR 2008-2010
PART NUMBER 102-0083

PRODUCT DESCRIPTION

This is a New, DOC, part number 102-0083 ( OEM Part Number 4352289RX ).This part is primarily made for a Cummins ISX, production years 2008-2010, and comes with a One Million Miles or One Year Warranty. For additional warranty info Click Here

OEM NUMBERS

Primary OEM4352289RX
Additional OEM4352289, 4352289NX, 4352289RX

ADDITIONAL DETAILS

CONDITIONNew
UPC / Barcode00840490539129
WEIGHT44.00 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.


Count on the Cummins ISX DOC (2008–2010) — OEM 4352289RX for dependable emissions reduction and consistent engine response. Built to target harmful exhaust pollutants and promote cleaner combustion, this rugged catalyst supports smoother throttle activity and reliable performance—even in demanding conditions. Manufactured to precise OEM standards for an easy drop-in installation and enduring durability, it’s the trusted choice for compliant, hardworking engine operation—mile after mile.

FITMENT CHART

YEARMAKEENGINE(S)
2008Cummins ISX
2009Cummins ISX
2010Cummins ISX

PEOPLE ALSO ASKS | BLOG(S)

When your engine’s emissions system needs reliable protection, starting with a quality Diesel Oxidation Catalyst (DOC) is key. The OEM 4352289RX DOC for Cummins ISX engines (2008–2010) ensures early conversion of pollutants and sets the stage for a smoother, more efficient aftertreatment process. Here’s how this vital component keeps your exhaust system in top shape:

  • Effective Early Emissions Conversion
    The OEM 4352289RX DOC transforms harmful components like hydrocarbons (HC) and carbon monoxide (CO) into cleaner byproducts as soon as they exit the combustion chamber, initiating cleaner downstream flow.

  • Supports Reliable Regeneration
    By maintaining stable exhaust temperature and airflow, this DOC ensures that Diesel Particulate Filter (DPF) regeneration can proceed without unexpected interruptions or forced cycles.

  • Prolongs Aftertreatment Component Health
    Filtering out contaminants before they reach sensitive parts like the DPF or SCR unit protects them from damage, helping to reduce maintenance frequency and improve reliability.

  • Straightforward OEM Installation
    Designed for Cummins ISX engines from 2008–2010, the OEM 4352289RX installs easily—no modification or guesswork required—so service stays quick and dependable.

  • Reliable Ownership with Warranty & Core Return
    This genuine DOC is backed by solid warranty support and includes streamlined core return service, offering lasting value and peace of mind.

In short, the OEM 4352289RX DOC isn't just a replacement—it’s the cornerstone of clean exhaust logic. It ensures efficient emissions reduction, smooth system performance, and long-term durability. With Tamerx Diesel Parts, you're choosing the quality and support your Cummins engine needs to perform reliably—mile after mile.

The Diesel Oxidation Catalyst (DOC) filter is a key component of a diesel engine's aftertreatment system, responsible for converting harmful emissions like hydrocarbons and carbon monoxide into less toxic compounds. Over time, however, the DOC filter can become contaminated, reducing its effectiveness and leading to system inefficiencies. Understanding the root causes of contamination helps prevent costly issues and maintain compliance with emissions standards.

Common Causes of DOC Filter Contamination

  • Oil or Fuel Leaks Into the Exhaust System
    One of the primary sources of DOC contamination is oil or unburned fuel entering the exhaust stream. This can happen due to worn piston rings, valve seals, or malfunctioning fuel injectors, which allow oil or diesel to bypass the combustion chamber and enter the exhaust.

  • Improper Combustion
    Incomplete or inefficient combustion results in excess hydrocarbons and particulate matter entering the DOC. This overloads the catalyst and leads to buildup that can restrict flow or reduce catalytic activity.

  • Coolant Intrusion
    If the engine’s head gasket or EGR cooler leaks coolant into the exhaust system, it can cause chemical contamination of the DOC, damaging the catalyst surface and impeding oxidation reactions.

  • Low Exhaust Temperatures
    Operating the engine at consistently low temperatures can prevent the DOC from reaching the proper temperature required to oxidize emissions efficiently. This results in the accumulation of unburned materials that eventually clog the filter.

  • Using Non-ULSD or Improper Additives
    The use of diesel fuel that isn’t ultra-low sulfur diesel (ULSD), or fuel additives that are not DOC-compatible, can result in sulfur or metallic deposits on the catalyst, permanently reducing its efficiency.


Contamination of the DOC filter can severely impact emission control and engine performance. Regular maintenance, using quality fuel and oil, and addressing leaks or combustion issues promptly can significantly reduce the risk of DOC failure. Preventive care ensures the longevity of your aftertreatment system and helps you stay compliant with environmental regulations.

 

With timely servicing and clean operation, it can last for many thousands of miles in service.

Reduced oxidation efficiency, noticeably elevated exhaust temperatures, or diagnostic alerts may show that performance is declining.

A restricted module increases backpressure and consequently reduces engine torque and efficiency.

Monitoring temperature differences across the module or capturing emissions metrics helps assess DOC efficiency.

Cummins DOCs

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