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Cummins ISX DOC | 4969718NX, 2888261NX, 2888261, 4969718, 4965053, 4969718RX, 2888261RX
Cummins ISX DOC | 4969718NX, 2888261NX, 2888261, 4969718, 4965053, 4969718RX, 2888261RX
Cummins ISX DOC | 4969718NX, 2888261NX, 2888261, 4969718, 4965053, 4969718RX, 2888261RX
Cummins ISX DOC | 4969718NX, 2888261NX, 2888261, 4969718, 4965053, 4969718RX, 2888261RX
Cummins ISX DOC | 4969718NX, 2888261NX, 2888261, 4969718, 4965053, 4969718RX, 2888261RX
Cummins ISX DOC | 4969718NX, 2888261NX, 2888261, 4969718, 4965053, 4969718RX, 2888261RX

Cummins ISX DOC | 4969718NX, 2888261NX, 2888261, 4969718, 4965053, 4969718RX, 2888261RX

SKU: DOCHDA-184085
$2,192.46 In Stock Backordered

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OEM Replacement for Part #: 4969718NX, 2888261NX, 2888261, 4969718, 4965053, 4969718RX, 2888261RX

The Cummins ISX Diesel Oxidation Catalyst is a direct fit replacement that provides equal or greater performance to OEM parts without the added cost of core charges. The Cummins ISX Diesel Oxidation Catalyst is a new (not re-manufactured or re-conditioned) part that includes complimentary gaskets. The DOC is backed with a three-year unlimited mileage warranty.

Currently not for sale or installation in California.


Engine Manufacturer
OEM Part Number
4969718NX, 2888261NX, 2888261, 4969718, 4965053, 4969718RX, 2888261RX
Aftermarket Part Number(s)
58048, C0010-ID, C20-0018, OTR0152018
Product Dimensions
19.30 x 13.17 x 13.17 in
44.76 lb
3 year unlimited mileage

Diesel Oxidation Catalyst (DOC)


The primary function of a DOC in a Diesel After Treatment System (ATS) is to ensure sufficient oxidation of CO and THC, and to oxidize, NO in the exhaust to NO2.


Dinex DOC technologies are based on a high thermal stability wash coat formulation with excellent CO and THC light-off characteristics and high NO2 formation. The typical CO and THC conversion levels seen are above 95%.


A high level of NO2 generated on DOC ensures passive soot oxidation on to the DPF at normal operation conditions, without the necessity of any external measures and is a highly favored method.


Excellent THC light-off characteristics support and offer flexibility in designing active DPF regeneration strategies through external measures like HC dosing.


The PGM loading and the Pt:Pd ratio can be modulated based on DPF regeneration strategies and requirements. 


The catalyst coating is applied on metallic as well as ceramic base substrates.

Dinex meets all levels of regulation


The Advanced US EPA07/10 regulations need complex after-treatment systems (ATS) to fulfill all regulatory requirements. After initial implementation in year 2007, US EPA regulations have been updated step by step over the years with primary focus on real driving emissions (RDE) and in-service conformity.


Dinex supports Heavy Duty and Medium Duty commercial vehicles with advanced catalyst coating technologies (DOC, DPF, SCR). Which are among the best in class. The wide range of technologies provide the flexibility to modulate the ATS layout to the full benefit of our customers as per their duty cycle and application requirements. The catalyst technologies have been rigorously tested by major OEMs world-wide and meet the most stringent engineering targets and real driving emissions performance requirements.


With close to 30 years of experience in canning & housing as well as patented technologies for compact mixers, Dinex builds robust and flexible ATS canning to meet a variety of packaging and space requirements.

Return Policy

We offer many different shipping options from our brands. For any information for shipping, please review our Shipping Policy here: Shipping Policy - DPFSales

Return and Refund Policy

All returns are shipped at the customers expense, using the shipping method of your choice. We recommend marking any shipments as fragile and/or adding insurance to guarantee your item is returned safely. Please address all returns to the following -
Attn: Returns Processing
725 S. Lugo Avenue
San Bernardino, CA 92408

Returns will be accepted within 30 days from the original date of purchase only. Clearance items may not be returned. Items that are damaged, missing parts, dented, not in the original condition, or have obvious signs of use for reasons not due to or seller error are subject to partial refunds or restocking fees of up to 50% of the item’s price. If an item is returned in excessively damaged and unusable condition, a refund will not be processed. If the buyer changes their mind about a purchase and returns an item in the original, like-new condition within the return window, the order is subject to a restocking fee up to 20% of the item’s price.

Due to the nature of electronic products and their susceptibility to damage, we are unable to accept returns for electronics once they have been purchased and opened. This policy is in place to ensure the integrity and functionality of our electronic items, as well as to maintain the highest standards of quality and safety for all our customers. 

As part of our policy, we cannot accept returns based on buyer's remorse, especially if the product fails to meet all expectations. It is imperative that customers thoroughly review product specifications and assess compatibility before making a purchase. We encourage our valued patrons to diligently scrutinize product details, ensuring they align with their needs and requirements. While we strive to provide accurate descriptions and comprehensive information, it remains the responsibility of the customer to make informed decisions. Therefore, we kindly request our customers to exercise due diligence in their purchasing process to avoid any inconveniences regarding compatibility and functionality.

If there are any uncertainties regarding compatibility or product features, we encourage customers to reach out to our support team for assistance and clarification.

Once we have received your return, it will be inspected and processed. This process can take up to 7-10 business days. Based on the condition of the returned item(s), a 20% restocking fee, up to 50% may be deducted from your refund. We will notify you if no refund will be processed based on excessive damage and unusable condition. 

Refunds will be processed once all inspections have been completed. Refunds will be processed back to the original form of payment used for the purchase. Please allow 3-5 business days for the refund to appear on your account.

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