Cummins ISL DOC : OEM 2885940RX
CUMMINS ISL DOC : OEM 2885940RX
ORDERS PLACED BEFORE 3PM EST WILL SHIP SAME DAY
WARRANTY
1M MILES OR 1 YEAR
PRODUCT DESCRIPTION
This is a New, DOC, part number 102-0041 ( OEM Part Number 2885940RX ). 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 | 2885940RX |
| Additional OEM | 2885940, 2885940NX, 2885940RX, A030D523 |
ADDITIONAL DETAILS
| CONDITION | New |
| UPC / Barcode | 00840490538894 |
| 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.
Engineered for dependable operation, the Cummins ISL DOC: OEM 2885940RX provides a precise fit and reliable service for compatible Cummins engines. Manufactured to OEM specifications, this diesel oxidation catalyst is designed to reduce harmful emissions while maintaining consistent exhaust system performance. Its durable build ensures long-lasting reliability in tough operating conditions, protecting both engine efficiency and emissions compliance. By choosing an OEM component, you minimize compatibility risks and safeguard long-term dependability. This DOC is a reliable solution for keeping Cummins-powered equipment running smoothly and effectively.
PEOPLE ALSO ASKS | BLOG(S)
The Cummins Diesel Oxidation Catalyst (DOC), part number 2885940RX, is a critical emissions component designed for use in Cummins ISC 8.9L, ISL 9L, and Paccar PX8 engines. This DOC is commonly found in engines built to meet EPA10 emissions standards and is responsible for initiating the aftertreatment process that helps reduce harmful exhaust gases.
What Does It Do?
As exhaust gases exit the engine, they pass through the DOC before reaching the Diesel Particulate Filter (DPF). The DOC uses a precious-metal-coated substrate to oxidize harmful emissions such as:
- Carbon monoxide (CO)
- Unburned hydrocarbons (THC)
- Nitric oxide (NO)
Through chemical reactions, the DOC converts these into less harmful substances, including carbon dioxide, water vapor, and nitrogen dioxide (NO₂). The generation of NO₂ is especially important because it helps facilitate passive regeneration in the DPF—allowing soot to be naturally burned off during regular engine operation.
Why It Matters
The DOC is essential to reducing emissions early in the exhaust stream. It helps the DPF operate efficiently, decreases the need for active regeneration cycles, and supports compliance with environmental regulations. The OEM 2885940RX is engineered for direct replacement, ensuring proper fit, reliability, and long service life in medium- and heavy-duty diesel applications.
The Diesel Oxidation Catalyst (DOC) is a vital part of your vehicle’s emissions control system. It helps reduce harmful gases before they pass through the rest of the exhaust system. When the DOC starts to fail, accurate diagnosis is crucial to avoid downstream damage—especially to the Diesel Particulate Filter (DPF).
Signs That Point to DOC Issues
A failing DOC can be difficult to spot, but here are some symptoms to watch for:
- Check engine light – Emissions-related fault codes often appear when the DOC is underperforming.
- Delayed or failed DPF regeneration – A weak DOC affects the heat needed for proper soot burn-off.
- Unusual exhaust smell – Raw or strong odors can mean unprocessed gases are exiting the system.
- Excess soot buildup – This may indicate the DOC isn’t initiating proper combustion upstream.
Diagnostic Steps
- Use a scan tool to check for trouble codes related to exhaust temperature and efficiency.
- Compare inlet and outlet temperatures of the DOC using thermal sensors—low differential may show reduced activity.
- Conduct an opacity test or emissions analysis to evaluate exhaust content.
Early diagnosis of a faulty DOC helps prevent further issues and keeps your emissions system functioning correctly.
It is designed to reduce harmful emissions from Cummins ISL diesel engines.
It ensures proper emissions control while meeting Cummins engine requirements.
Yes, this diesel oxidation catalyst is designed to comply with EPA emissions standards.
It reduces pollutants such as carbon monoxide and hydrocarbons from exhaust gases.
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