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CUMMINS ISX DOC

Shipping ICON

ORDERS PLACED BEFORE 3PM EST WILL SHIP SAME DAY

WARRANTY ICON

WARRANTY
1M MILES OR 1 YEAR

$1,895.00

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
PART TYPEDOC
BRANDSkyline Emissions
ENGINE MAKECummins
ENGINE TYPEISX
YEAR
PART NUMBERXN0624-M

PRODUCT DESCRIPTION

This is a New, Skyline Emissions DOC, Skyline Emissions part number XN0624-M. This part is primarily made for a Cummins ISX, and comes with a One Million Miles or One Year Warranty. For additional warranty info Click Here

OEM NUMBERS

Additional OEM4329542, 4329542NX, 4353284, 4353284NX, 4353284RX, 5287100, 5287100NX, 5298350, 5298350NX, A035E400, A041P419, A045X391, A047V484

ADDITIONAL DETAILS

CONDITIONNew
UPC / Barcode00840490548626
WEIGHT53.00 LBS

SHIPPING OPTIONS

Ship Weight : 53.00 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.


Start your exhaust cleanup right with the Cummins ISX DOC, engineered to reduce harmful emissions and improve overall aftertreatment performance. This Diesel Oxidation Catalyst is designed to fit ISX engines perfectly, helping break down pollutants before they move through the rest of the system. Built for long-lasting durability and reliable operation under tough conditions, it’s a smart upgrade for hardworking diesel trucks. Keep your engine running cleaner and more efficiently with a DOC that’s ready for the long haul.

PEOPLE ALSO ASKS | BLOG(S)

A Diesel Oxidation Catalyst (DOC) is designed to be a durable, long-term component in a diesel emissions system. Unlike serviceable filters, a DOC does not have a routine replacement interval and often lasts many years when the engine and exhaust system are properly maintained. Its lifespan is influenced by operating conditions, fuel quality, and overall engine health.

  • Typical lifespan range: Many DOC units last between 200,000 and 500,000 miles under normal operating conditions.

  • Engine condition matters: Proper combustion and low oil consumption help prevent contamination.

  • Fuel and oil quality impact longevity: Clean diesel fuel and manufacturer-approved, low-ash oil reduce residue buildup.

  • Driving habits play a role: Consistent operating temperatures and longer drive cycles support DOC efficiency.

  • Upstream component health: Problems with injectors, turbochargers, or EGR systems can shorten DOC life.

  • Timely maintenance and diagnostics: Addressing warning lights early helps prevent premature failure.

A DOC typically only needs replacement when it becomes contaminated, restricted, or damaged beyond recovery. Maintaining overall engine health and addressing issues promptly helps maximize DOC lifespan and ensures reliable emissions system performance.

By initiating chemical reactions that break down pollutants in the exhaust, it lowers the amount of toxic gases released into the atmosphere. This helps the engine meet emissions standards.

Replacement may be needed if you notice persistent emissions warnings or decreased exhaust efficiency. Damage or internal clogging also indicates it’s time for a new unit.

Common symptoms include higher exhaust temperatures, warning lights, and poorer exhaust flow. These issues usually point to degraded catalyst performance.

While a skilled DIYer might attempt installation, professional service is recommended to ensure proper alignment and sealing. Incorrect installation can lead to exhaust leaks or emissions faults.

Cummins DOCs

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