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Cummins DOC : OEM 5273094RX

CUMMINS DOC : OEM 5273094RX

Shipping ICON

ORDERS PLACED BEFORE 3PM EST WILL SHIP SAME DAY

WARRANTY ICON

WARRANTY
1M MILES OR 1 YEAR

$1,543.97

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 5273094RX
PART TYPE DOC
BRAND
ENGINE MAKE Cummins
ENGINE TYPE
YEAR
PART NUMBER 102-0019

PRODUCT DESCRIPTION

This is a New, DOC, part number 102-0019 ( OEM Part Number 5273094RX ). This part is primarily made for a Cummins , and comes with a One Million Miles or One Year Warranty. For additional warranty info Click Here

OEM NUMBERS

Primary OEM5273094RX
Additional OEM2888249, 2888249NX, 2888249RX, 4965030, 4965030NX, 4965030RX, 4965317, 4965317NX, 4965317RX, 4969542, 4969542NX, 4969542RX, 5273094, 5273094NX, 5273094RX, A030K998, A030W858, Q620970, Q621430, Q621503

ADDITIONAL DETAILS

CONDITIONNew
UPC / Barcode00840490538610
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.


The Cummins DOC: OEM 5273094RX is designed to ensure proper fit and dependable service for compatible Cummins diesel engines. Built to original equipment specifications, this diesel oxidation catalyst helps reduce harmful emissions while supporting consistent exhaust system performance. Its rugged construction provides long-lasting durability in demanding environments, protecting both engine efficiency and compliance with emissions regulations. Choosing an OEM DOC minimizes compatibility concerns and helps maintain long-term reliability. This component is a trusted solution for keeping Cummins-powered equipment running smoothly and effectively.

PEOPLE ALSO ASKS | BLOG(S)

The Cummins Diesel Oxidation Catalyst (DOC)—part number 5273094RX—plays a critical role in diesel aftertreatment systems, particularly in Cummins ISX engines. Its main function is to convert harmful exhaust components into less harmful substances through oxidation.

Key Roles of the DOC:

  • Converts up to 95% of carbon monoxide (CO) and total hydrocarbons (THC) into less hazardous products.
  • Transforms nitric oxide (NO) into nitrogen dioxide (NO₂), which is essential for subsequent soot reduction in the Diesel Particulate Filter (DPF).
  • Generates sufficient NO₂ to support passive regeneration in the DPF under typical operating conditions, reducing the need for active heating methods.
  • Optimized with advanced catalyst formulations (platinum group metals on ceramic or metallic substrates), offering high thermal stability and efficient light-off for CO and THC.

The Cummins DOC is a key early-stage component in the emissions control chain. By efficiently eliminating a large portion of CO and hydrocarbons—and by converting NO into NO₂—it sets the stage for cleaner combustion and smoother DPF operation. This leads to reduced emissions, improved reliability, and easier maintenance across the exhaust system.

The Diesel Oxidation Catalyst (DOC) is a key component in reducing harmful emissions by breaking down pollutants such as hydrocarbons and carbon monoxide. It also plays a role in initiating DPF regeneration. When the DOC begins to fail, the entire aftertreatment system can be affected.

Common Signs of a Failing DOC

If your DOC is not functioning correctly, you may experience:

  • Excessive exhaust smoke
    • Incomplete oxidation can cause visible smoke, especially at startup.
  • Persistent warning lights
    • A check engine or emissions-related alert may appear.
    • Unusual exhaust odors A strong or strange smell may suggest improper treatment of pollutants.
  • High exhaust temperatures
    • A faulty DOC can disrupt heat flow, causing overheating in the aftertreatment system.
  • Frequent DPF issues
    • The DOC initiates soot oxidation; if it fails, the DPF may clog more often.

What to Do If You Suspect DOC Trouble

Have the system scanned for fault codes related to the emissions system. A thorough inspection may involve checking temperature sensors and flow rates to determine if the DOC is still effective or needs to be replaced.

Its role is to oxidize harmful gases and prepare exhaust flow for proper DPF function.

Yes, a malfunctioning DOC can affect exhaust chemistry and cause abnormal temperature levels.

Yes, it should be handled carefully to avoid damage to the catalyst material inside.

Removal is illegal and will trigger emissions fault codes as well as compliance violations.

Cummins DOCs

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