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Cummins X15, X12,MX13 DOC Filter 2018-2024: OEM 4394782

CUMMINS X15, X12,MX13 DOC FILTER 2018-2024: OEM 4394782

Shipping ICON

ORDERS PLACED BEFORE 3PM EST WILL SHIP SAME DAY

WARRANTY ICON

WARRANTY
1M MILES OR 1 YEAR

$2,850.00

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 NUMBER4394782
PART TYPEDOC Filter
BRANDTamerx Diesel Products
ENGINE MAKECummins
ENGINE TYPEX15, X12, MX13
YEAR2018-2024
PART NUMBER102-0150RM-DOC
APPLICATION NOTESEPA21, EPA17
ADDITIONAL NOTESInlet Catalyst

PRODUCT DESCRIPTION

This is a Remanufactured Tamerx DOC Filter, Tamerx part number 102-0150RM-DOC ( OEM Part Number 4394782 ). 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 Cummins X15, X12,MX13, production years 2018-2024, and comes with a One Million Miles or One Year Warranty. For additional warranty info Click Here

Additional Notes: Inlet Catalyst

OEM NUMBERS

Primary OEM4394782
Additional OEM4394782

ADDITIONAL DETAILS

CONDITIONRemanufactured
UPC / Barcode00840490547902
WEIGHT92.00 LBS

SHIPPING OPTIONS

Ship Weight : 92.00 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.


Give your exhaust system a serious upgrade with the Cummins X15, X12, MX13 DOC Filter 2018–2024 – OEM 4394782. This Diesel Oxidation Catalyst filter works hard to reduce harmful emissions and improve overall engine efficiency. Built to exact OEM standards, it offers a perfect fit and reliable performance mile after mile. Keep your rig running cleaner and more compliant with a part you can trust.

FITMENT CHART

YEARMAKEENGINE(S)
2018Cummins X15 X12 MX13
2019Cummins X15 X12 MX13
2020Cummins X15 X12 MX13
2021Cummins X15 X12 MX13
2022Cummins X15 X12 MX13
2023Cummins X15 X12 MX13
2024Cummins X15 X12 MX13

PEOPLE ALSO ASKS | BLOG(S)

Diesel engines rely on high-quality emissions components to reduce harmful exhaust pollutants, and the Cummins X15 / X12 / MX13 DOC Filter (2018–2024, OEM 4394782) plays a key role in managing exhaust quality. The Diesel Oxidation Catalyst (DOC) filter is designed to help convert carbon monoxide and unburned hydrocarbons into less harmful gases before they move through the rest of the emissions system. Using the correct OEM-grade DOC filter ensures your engine’s emissions system operates efficiently and helps maintain smooth, dependable performance.

This DOC filter contributes significantly to effective emissions control — here’s why it matters:

  • Improves Exhaust Emissions – Helps transform carbon monoxide and hydrocarbons into safer exhaust components, contributing to cleaner overall emissions.

  • Supports Downstream Emissions Components – By reducing pollutant load early in the exhaust stream, the DOC filter helps systems like SCR and particulate filters work more effectively.

  • Helps Maintain Emissions Compliance – Installing the right DOC filter helps ensure your engine continues to meet regulatory standards without triggering warnings or derate modes.

  • OEM-Grade Fit and Durability – As OEM 4394782, this filter matches original equipment specifications for size, materials, and performance, providing dependable long-term operation.

  • Prevents Exhaust System Issues – Replacing a worn or restricted DOC filter can help reduce backpressure, improve throttle response, and support smoother exhaust flow.

A failing or restricted DOC filter can lead to reduced emissions efficiency, decreased engine performance, and possible system warnings. The Cummins X15 / X12 / MX13 DOC Filter (OEM 4394782) delivers the OEM-standard quality and emissions support your engine depends on — helping keep your diesel running cleaner and more efficiently. For customers seeking a dependable replacement part, Tamerx offers high-quality components designed to support reliable emissions performance and overall engine health.

A Diesel Oxidation Catalyst (DOC) filter is designed to be a long-lasting component within a diesel emissions system. Unlike parts that require regular replacement, a DOC filter can operate effectively for many years when the engine and exhaust system are properly maintained. Its lifespan largely depends on operating conditions, maintenance habits, and overall engine health.

  • Average lifespan range: Many DOC filters last between 200,000 to 500,000 miles under normal operating conditions.

  • Engine condition matters: Proper combustion and minimal oil consumption help reduce contamination and extend DOC life.

  • Fuel and oil quality impact longevity: Using approved low-ash oil and clean diesel fuel limits ash and residue buildup.

  • Driving patterns play a role: Consistent operating temperatures and longer drive cycles support proper DOC function.

  • Upstream component health is critical: Issues with injectors, turbochargers, or EGR systems can shorten DOC lifespan.

  • Maintenance habits make a difference: Regular servicing and early diagnosis of engine faults help prevent premature DOC failure.

The lifespan of a DOC filter can vary, but good maintenance practices greatly improve its durability. By maintaining engine health and addressing problems early, vehicle owners can maximize DOC filter life and maintain reliable emissions system performance.

Ignoring a failing filter can lead to increased emissions, poor fuel economy, and potential engine performance issues due to increased backpressure. Early diagnosis and replacement help maintain engine health.

While its primary role is to oxidize gases, improvements in exhaust chemistry can indirectly reduce the amount of visible smoke. Persistent smoke, however, might indicate other engine or aftertreatment issues.

Yes, a clogged or underperforming DOC filter can trigger diagnostic trouble codes and illuminate emission-related warning lights. These alerts help signal when inspection or servicing is needed.

Short drives or frequent idling may not generate sufficient exhaust heat for optimal oxidation reactions, leading to buildup in the filter. Longer highway use helps maintain proper filter function and emissions control.

 

Cummins DOC Filters

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