
International Navistar A26 DPF Filter 2021-2024: OEM 2521228C1
INTERNATIONAL NAVISTAR A26 DPF FILTER 2021-2024: OEM 2521228C1

ORDERS PLACED BEFORE 3PM EST WILL SHIP SAME DAY

WARRANTY
1M MILES OR 1 YEAR
PRODUCT DESCRIPTION
This is a Remanufactured Tamerx DPF Filter, Tamerx part number 110-0057RM-DPF ( OEM Part Number 2521228C1 ). All parts are proudly remanufactured in the U.S.A. to the highest of OEM standards, and improvements are often applied to the original design in the remanufacturing process. This part is primarily made for a International Navistar A26, production years 2021-2024, and comes with a One Million Miles or One Year Warranty. For additional warranty info Click Here
OEM NUMBERS
| Primary OEM | 2521228C1 |
| Additional OEM | 2521228C1, 2583180X |
ADDITIONAL DETAILS
| CONDITION | Remanufactured |
| UPC / Barcode | 00840490552432 |
| WEIGHT | 33.00 LBS |
SHIPPING OPTIONS
Ship Weight : 33.00 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 2021–2024 International Navistar A26–powered vehicles, the DPF Filter (OEM 2521228C1) is a critical component of the diesel exhaust aftertreatment system. This diesel particulate filter is designed to align with factory exhaust configurations and emissions sensor locations specific to the A26 engine. Its function is to capture and retain soot from exhaust gases, helping reduce particulate emissions and support compliance with applicable emissions standards. Consistent DPF operation helps maintain stable exhaust flow and can reduce the likelihood of emissions-related warning lights, fault codes, or derate conditions. This page provides application-specific information to assist with accurate identification of the International Navistar A26 DPF Filter OEM 2521228C1 for service and replacement needs
FITMENT CHART
| YEAR | MAKE | ENGINE(S) | ||||
|---|---|---|---|---|---|---|
| 2021 | International Navistar | A26 | ||||
| 2022 | International Navistar | A26 | ||||
| 2023 | International Navistar | A26 | ||||
| 2024 | International Navistar | A26 | ||||
PEOPLE ALSO ASKS | BLOG(S)
The International/Navistar A26 DPF Filter, OEM 2521228C1, is a key part of the aftertreatment system used on 2021–2024 International trucks equipped with the A26 engine platform. Its primary purpose is to capture and remove diesel particulate matter (soot) from the exhaust before it exits the vehicle, helping the engine meet emissions regulations.
A DPF (Diesel Particulate Filter) differs from other emissions parts because it physically traps tiny solid particles produced during combustion. As exhaust flows through the filter’s honeycomb-style ceramic substrate, soot and particulates are captured in its internal channels. Over time, this soot must be periodically burned off through a process called regeneration, which raises exhaust temperature to convert accumulated soot into a smaller amount of ash. This helps maintain proper exhaust flow and avoids restriction.
Key functions of the A26 DPF Filter (OEM 2521228C1)
- Traps and stores soot and particulate matter from diesel exhaust
- Reduces visible smoke and solid emissions
- Maintains regulated emissions compliance for 2021–2024 applications
- Works with regeneration cycles to clean the filter and restore airflow
- Protects downstream aftertreatment components by reducing particulate loads
The International Navistar A26 DPF Filter (OEM 2521228C1) is essential for keeping soot under control, supporting emissions compliance, and ensuring stable exhaust system operation in A26-equipped vehicles.
Yes, you can usually still drive even if your SCR (Selective Catalytic Reduction) system has gone bad, but it should only be considered a short-term option, not a long-term solution.
The SCR system reduces NOx emissions using DEF. When it fails, the vehicle may continue to operate normally at first, but the emissions system will quickly detect the issue and begin taking protective actions.
What can happen if you keep driving with a bad SCR?
- Check engine and emissions warning lights
- SCR and NOx-related fault codes often remain active and return repeatedly.
- Derate or restricted mode
- Many vehicles will limit speed or engine operation if SCR faults are not corrected.
- Possible no-start countdown
- On some vehicles, continued operation with SCR faults can eventually prevent the engine from restarting.
- Abnormal DEF system behavior
- Increased DEF usage, dosing errors, or DEF system warnings may occur.
- Increased risk of additional emissions system damage
- Driving too long with SCR issues can place extra stress on NOx sensors, DEF dosing components, and exhaust hardware.
You may be able to drive short distances, but continuing to operate with a bad SCR is not recommended. SCR failures often lead to derate conditions and shutdown risks. Once the issue is confirmed, replacement should be addressed as soon as possible to avoid further complications.
Frequent short trips or conditions that prevent normal regeneration can lead to increased soot accumulation.
Yes, the DPF module can be replaced separately from other parts of the exhaust system.
It helps determine when regeneration should occur and assesses overall filter health.
Yes, poor fuel quality can contribute to increased particulate production and affect DPF condition.




