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Cummins X15 SCR 2018-2024: OEM 5418103

CUMMINS X15 SCR 2018-2024: OEM 5418103

Shipping ICON

ORDERS PLACED BEFORE 3PM EST WILL SHIP SAME DAY

WARRANTY ICON

WARRANTY
1M MILES OR 1 YEAR

$4,995.00

AVAILABILITY IN STOCK
OEM NUMBER5418103
PART TYPESCR
BRANDTamerx Diesel Products
ENGINE MAKECummins
ENGINE TYPEX15
YEAR2018-2024
PART NUMBER5418103RM-SCR
APPLICATION NOTESNavistar 485-605 EPA21, EPA17

PRODUCT DESCRIPTION

This is a Remanufactured Tamerx SCR, Tamerx part number 5418103RM-SCR ( OEM Part Number 5418103 ). 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 2018-2024, and comes with a One Million Miles or One Year Warranty. For additional warranty info Click Here

OEM NUMBERS

Primary OEM5418103
Additional OEM5418103

ADDITIONAL DETAILS

CONDITIONRemanufactured
UPC / Barcode00840490552166
WEIGHT75.00 LBS

SHIPPING OPTIONS

Ship Weight : 75.00 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 Cummins X15 engines from model years 2018–2024, OEM 5418103 is a selective catalytic reduction component designed to support proper exhaust emissions control and EPA compliance. This SCR unit is manufactured for precise fitment and seamless integration with the factory aftertreatment system. Constructed with durable materials, it is built to withstand the high-temperature demands of heavy-duty diesel operation. The component supports consistent aftertreatment function while adhering to OEM specifications. It is well suited for fleet maintenance and targeted repair applications where dependable emissions management is required.

FITMENT CHART

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

PEOPLE ALSO ASKS | BLOG(S)

Cummins X15 SCR 2018–2024: OEM 5418103 is a Selective Catalytic Reduction (SCR) outlet catalyst module used in the aftertreatment system of Cummins X15 diesel engines. It is designed for model years 2018 through 2024 and plays a key role in managing exhaust emissions before they exit the vehicle.

This component is positioned near the end of the exhaust aftertreatment path. Its primary function is to support the chemical process that reduces nitrogen oxide emissions after Diesel Exhaust Fluid (DEF) has been introduced upstream. As exhaust gases pass through the catalyst, harmful compounds are converted into nitrogen and water vapor.

OEM 5418103 is engineered specifically for the Cummins X15 platform, ensuring proper fitment and compatibility with existing aftertreatment components. It works alongside sensors and control modules that monitor exhaust conditions and help maintain emissions compliance.

Key characteristics of Cummins X15 SCR OEM 5418103 include:

  • Designed for Cummins X15 engines from 2018–2024
  • Functions as the outlet portion of the SCR catalyst system
  • Supports nitrogen oxide reduction within the exhaust stream
  • Integrates with DEF dosing and emissions monitoring systems

Overall, OEM 5418103 is an essential part of the Cummins X15 emissions system, helping vehicles meet regulatory requirements and maintain consistent exhaust treatment throughout their service life.

A failing SCR (Selective Catalytic Reduction) system usually shows clear warning signs before complete failure occurs. Recognizing these symptoms early can help prevent engine derates, failed emissions tests, and costly catalyst replacement.

One of the earliest indicators is the illumination of the check engine light or emissions warning, often accompanied by reduced engine performance. Drivers may also notice increased DEF consumption or, in some cases, little to no DEF usage due to improper dosing. As the SCR system becomes less effective, nitrogen oxide (NOx) levels rise and trigger efficiency-related fault codes.

Common signs of a bad SCR system include:

  • Persistent SCR efficiency or NOx conversion fault codes
  • Engine derate or limp mode warnings
  • Failed or pending emissions test results
  • Abnormally high or low DEF consumption
  • Strong ammonia odor near the exhaust
  • Excessive exhaust temperatures or frequent failed regenerations

In more advanced cases, the SCR catalyst may become poisoned or thermally damaged, preventing it from storing or converting ammonia properly. These conditions cannot be corrected through cleaning or software resets. When symptoms persist after confirming DEF quality, sensor functionality, and upstream engine health, the SCR catalyst is likely degraded and requires replacement. Early diagnosis remains the most effective way to reduce repair costs and avoid unnecessary downtime.

Yes, it typically includes the required mounting components for proper installation.

Yes, it is engineered to work with the diesel exhaust fluid injection system of the X15.

Yes, it is suitable for all compatible Cummins X15 configurations within the 2018–2024 range.

Yes, factory exhaust sensors must be reconnected to ensure accurate system monitoring.

Cummins SCRs