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Cummins ISL DOC : OEM 5287491RX

CUMMINS ISL DOC : OEM 5287491RX

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 NUMBER5287491RX
PART TYPEDOC
BRAND
ENGINE MAKECummins
ENGINE TYPEISL
YEAR
PART NUMBER102-0042

PRODUCT DESCRIPTION

This is a New, DOC, part number 102-0042 ( OEM Part Number 5287491RX ). This part is primarily made for a Cummins ISL, and comes with a One Million Miles or One Year Warranty. For additional warranty info Click Here

OEM NUMBERS

Primary OEM 5287491RX
Additional OEM 4965352, 4965352NX, 4965352RX, 5287491, 5287491NX, 5287491RX, A035H299, OTR58052, Q621560

ADDITIONAL DETAILS

CONDITION New
UPC / Barcode 00840490538917
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.


Designed specifically for Cummins ISL engine applications, the OEM 5287491RX Diesel Oxidation Catalyst (DOC) is manufactured to meet original equipment specifications for precise fit and dependable aftertreatment function. This component works within the exhaust system to convert hydrocarbons and carbon monoxide into less harmful emissions before they move downstream. Constructed with durable catalyst materials and heavy-duty housing, it is engineered to withstand high exhaust temperatures and demanding duty cycles. Proper DOC operation plays a key role in supporting emissions compliance and maintaining overall system efficiency. Tamerx Diesel Products LLC offers this Cummins ISL DOC as a reliable solution for consistent exhaust aftertreatment performance.

PEOPLE ALSO ASKS | BLOG(S)

Proper maintenance of your Cummins ISL Diesel Oxidation Catalyst (DOC) OEM 5287491RX is essential for keeping your aftertreatment system operating efficiently. The DOC plays a key role in converting harmful exhaust gases and supporting downstream components like the DPF.

Although the DOC does not trap soot like a DPF, it still requires attention to ensure it functions correctly over time.

To properly maintain your Cummins ISL DOC:

  • Follow manufacturer-recommended service intervals
  • Address check engine lights or fault codes promptly
  • Maintain proper fuel quality to reduce contamination
  • Keep the EGR and fuel injection systems in good condition
  • Inspect exhaust connections for leaks or loose clamps
  • Ensure sensors in the aftertreatment system are functioning correctly

Clean combustion is critical for DOC longevity. Poor fuel quality or malfunctioning injectors can introduce excessive hydrocarbons into the exhaust, which may affect catalyst efficiency.

It’s also important to avoid prolonged operation with unresolved engine issues, as incomplete combustion can impact exhaust system components.

If you notice increased exhaust odor, warning lights, or reduced efficiency in the aftertreatment system, diagnostics should be performed immediately to prevent further complications.

By maintaining the overall health of your engine and exhaust system, you help protect your Cummins ISL DOC OEM 5287491RX and support consistent emissions control and reliable operation.

The Diesel Oxidation Catalyst (DOC) is a critical part of your exhaust aftertreatment system. It helps convert harmful exhaust gases into less harmful emissions. When the DOC begins to fail, it can affect overall exhaust efficiency and trigger warning lights.

Recognizing the symptoms early can help prevent further system damage.

Common signs of a bad DOC include:

  • Check engine light or aftertreatment warning light
  • Increased exhaust temperatures
  • Strong or unusual exhaust odor
  • Reduced fuel efficiency
  • Failed emissions testing
  • Fault codes related to catalyst efficiency

One common issue is internal contamination. Oil or coolant entering the exhaust system can coat the catalyst surface and reduce its ability to function properly.

In more severe cases, overheating can cause the internal substrate to melt or crack. When this happens, exhaust flow may become restricted, affecting engine operation.

Sensor problems can sometimes mimic DOC failure, so proper diagnosis is important. Technicians will typically review fault codes, monitor temperature readings, and check for exhaust restriction before confirming replacement.

If you notice warning lights or unusual exhaust behavior, a professional inspection can help determine whether the DOC is the source of the problem.

The DOC 5287491RX helps oxidize hydrocarbons and carbon monoxide in the exhaust stream.

Yes, the DOC 5287491RX is designed with connections for original sensor interfaces.

Elevated exhaust temperatures or diagnostic indications related to exhaust chemistry may suggest DOC service.

Yes, the 5287491RX DOC forms an integral part of the Cummins ISL aftertreatment emissions system.

Cummins DOCs