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Cummins X15 DOC Filter 2018-2021: OEM 5418218

CUMMINS X15 DOC FILTER 2018-2021: OEM 5418218

Shipping ICON

ORDERS PLACED BEFORE 3PM EST WILL SHIP SAME DAY

WARRANTY ICON

WARRANTY
1M MILES OR 1 YEAR

$2,850.00

CORE CHARGE:

$1,000.00
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 NUMBER5418218
PART TYPEDOC Filter
BRANDTamerx Diesel Products
ENGINE MAKECummins
ENGINE TYPEX15
YEAR2018-2021
PART NUMBER
APPLICATION NOTESVan Hool, 485-565, EPA17
ADDITIONAL NOTESInlet Catalyst

PRODUCT DESCRIPTION

This is a Remanufactured Tamerx DOC Filter, Tamerx part number 5418218RM-DOC ( OEM Part Number 5418218 ). 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, production years 2018-2021, and comes with a One Million Miles or One Year Warranty. For additional warranty info Click Here

Additional Notes: Inlet Catalyst

OEM NUMBERS

Primary OEM5418218
Additional OEM5418218

ADDITIONAL DETAILS

CONDITIONRemanufactured
UPC / Barcode00840490550506
WEIGHT35.00 LBS

SHIPPING OPTIONS

Ship Weight : 35.00 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.


Serving as a key component in the exhaust aftertreatment system, the Cummins X15 DOC Filter 2018–2021 (OEM 5418218) is designed for compatibility with select Cummins X15 diesel engines. This Diesel Oxidation Catalyst (DOC) filter helps reduce hydrocarbons and carbon monoxide in the exhaust stream before gases exit the system. Manufactured to meet original equipment specifications, it is built for proper fitment and dependable integration with the vehicle’s emissions components. The durable construction is intended to withstand the high temperatures and demanding operating conditions common in heavy-duty diesel applications. Replacing a worn or restricted DOC filter with the OEM 5418218 helps maintain proper exhaust system function and supports compliance with emissions regulations.

FITMENT CHART

YEARMAKEENGINE(S)
2018Cummins X15
2019Cummins X15
2020Cummins X15
2021Cummins X15

PEOPLE ALSO ASKS | BLOG(S)

The Cummins X15 DOC Filter (Diesel Oxidation Catalyst), OEM 5418218, is a crucial component in the emissions system used in many heavy-duty trucks built between 2018 and 2021. It plays an essential role in managing exhaust gases as they exit the engine, helping reduce harmful pollutants before they continue through the rest of the aftertreatment system.

Located near the beginning of the exhaust stream, the DOC filter contains a catalyst-coated structure that reacts with specific gases in diesel exhaust. This reaction helps convert certain pollutants into less harmful compounds before the exhaust reaches other emissions components.

Key Reasons the Cummins X15 DOC Filter 5418218 Is Important

  • Reduces harmful exhaust compounds
    • such as hydrocarbons and carbon monoxide
  • Supports the proper function of the Diesel Particulate Filter (DPF)
  • Helps maintain compliance with emissions regulations
    • for heavy-duty diesel engines
  • Assists with managing exhaust temperatures
    • within the aftertreatment system
  • Maintains consistent exhaust flow
    • through the emissions system

Because the DOC filter performs the first stage of exhaust treatment, it directly affects how efficiently the entire aftertreatment system operates. If the DOC filter is not functioning correctly, it can impact the effectiveness of downstream emissions components.

For trucks equipped with Cummins X15 engines from 2018 to 2021, using the correct part—OEM 5418218—helps ensure the emissions system continues to operate as designed.

A Diesel Oxidation Catalyst (DOC) filter is designed to last for many miles, but it will eventually require replacement as deposits accumulate and the catalyst material ages. The exact interval can vary depending on driving conditions, fuel quality, and how well the engine is maintained.

In many diesel vehicles, a DOC filter can last between 200,000 and 400,000 miles under typical operating conditions. However, certain factors can shorten its lifespan and lead to earlier replacement.

Several conditions can contribute to a DOC filter wearing out sooner, including:

  • Frequent short trips
    • that prevent the exhaust system from reaching proper temperature
  • Poor fuel quality
    • that leaves deposits on the catalyst surface
  • Engine issues
    • that allow unburned fuel into the exhaust
  • Oil contamination
    • entering the exhaust system
  • Excessive soot buildup
    • from incomplete combustion

Drivers should also watch for signs that the DOC filter may need attention. Warning lights, diagnostic trouble codes, or restricted exhaust flow may indicate that the component is no longer functioning correctly.

Routine inspections of the emissions system can help detect buildup or contamination early. Addressing engine problems promptly and maintaining proper operating conditions can help extend the life of the DOC filter and reduce the likelihood of premature replacement.

OEM 5418218 is associated with certain Cummins X15 diesel engine applications.

Cummins part number 5418218 is classified as a diesel oxidation catalyst used in the exhaust aftertreatment system.

The component functions during the early phase of exhaust gas processing within the aftertreatment assembly.

Technicians identify the component by confirming the OEM number 5418218.

Cummins DOC Filters