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Cummins X15 SCR 2018-2021: OEM 5418500

CUMMINS X15 SCR 2018-2021: OEM 5418500

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 NUMBER5418500
PART TYPESCR
BRANDTamerx Diesel Products
ENGINE MAKECummins
ENGINE TYPEX15
YEAR2018-2021
PART NUMBER102-0291RM-SCR-7
APPLICATION NOTESPACCAR, 485-565, EPA17

PRODUCT DESCRIPTION

This is a Remanufactured Tamerx SCR, Tamerx part number 102-0291RM-SCR-7 ( OEM Part Number 5418500 ). 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

OEM NUMBERS

Primary OEM5418500
Additional OEM5418500

ADDITIONAL DETAILS

CONDITIONRemanufactured
UPC / Barcode00840490551701
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.


Turn up the performance with the Cummins X15 SCR 2018–2021: OEM 5418500, built to keep your emissions system running clean and efficient. This genuine OEM Selective Catalytic Reduction unit helps minimize harmful output while enhancing fuel economy under heavy-duty conditions. Designed for durability and seamless fitment, it’s a reliable solution for long-haul reliability. Stay compliant and powered up for every mile ahead.

FITMENT CHART

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

PEOPLE ALSO ASKS | BLOG(S)

Keeping your diesel truck’s emissions system functioning properly is essential for staying compliant and dependable on the road. The Selective Catalytic Reduction (SCR) assembly plays a major role in reducing harmful exhaust gases, and for Cummins X15 engines from 2018 to 2021, the Cummins X15 SCR 2018–2021: OEM 5418500 is engineered to support effective emissions control. Choosing the right OEM SCR unit helps maintain clean operation and reduces the risk of emissions-related issues that can interrupt service.

    • The SCR assembly targets nitrogen oxides (NOx) in your exhaust, converting them into nitrogen and water,
      which helps your truck meet EPA emissions standards and operate cleanly on the road.

    • The OEM 5418500 SCR unit is specifically designed for Cummins X15 engines built between 2018 and 2021,
      offering proper fitment and compatibility with the factory aftertreatment system.

    • This component works alongside the DEF dosing and other exhaust treatment systems to support balanced emissions control,
      helping optimize DEF usage and promote consistent exhaust cleaning.

    • Installing a correct OEM SCR replacement helps reduce the likelihood of emissions warnings, fault codes, and derate conditions,
      keeping your truck in service and avoiding unexpected maintenance.

    • A properly functioning SCR system reduces stress on other aftertreatment parts by minimizing excess emissions buildup,
      which supports longer component life and fewer operational interruptions.

    • Choosing an OEM part like the Cummins X15 SCR 2018–2021: OEM 5418500 ensures durability, correct system integration,
      and dependable performance for your emissions control needs.

Selecting the right SCR component makes a real difference in maintaining your Cummins X15 emissions system. The OEM 5418500 SCR assembly delivers correct fitment and reliable operation to help you stay compliant, reduce emissions-related issues, and keep your truck performing smoothly. At Tamerx Diesel Parts, we offer quality diesel components to help minimize downtime and support long-term road readiness.

A Selective Catalytic Reduction (SCR) system is a critical emissions component that helps reduce nitrogen oxide levels in diesel exhaust. When the SCR becomes clogged, contaminated, or begins to fail, it can disrupt emissions control and affect overall vehicle operation. Recognizing the symptoms early can help prevent costly repairs and engine derate conditions.

  • Check engine or emissions warning lights: SCR-related alerts are often the first sign of a problem.

  • Engine derate or limp mode: The vehicle may reduce power to maintain emissions compliance.

  • Increased DEF consumption: Abnormal DEF usage can indicate inefficient SCR operation.

  • NOx sensor or efficiency fault codes: Persistent codes may signal SCR catalyst degradation or restriction.

  • Poor fuel economy: Engine adjustments caused by SCR faults can increase fuel consumption.

  • Unusual exhaust odors: Strong ammonia-like smells may point to improper DEF dosing or poor catalyst performance.

A clogged or failing SCR system should be addressed promptly to avoid further emissions system damage. Early diagnosis, proper DEF management, and timely repairs help restore reliable operation and maintain compliance.

It’s wise to check the SCR assembly during routine emissions system service or whenever warning lights appear. Early inspection helps catch issues before they become more expensive to fix.

Yes — a severely blocked SCR filter can increase backpressure and lead to reduced engine performance, including derate conditions. Replacing the filter helps restore normal power and emissions flow.

Using a part built to OEM specifications ensures compatibility and reliable emissions performance. Non-OEM components may not meet the same standards and could lead to system faults.

Ignoring SCR issues can lead to repeated warning lights, poor exhaust quality, engine derate, and possible regulatory non-compliance. Addressing the problem early helps prevent further damage and costly repairs.

Cummins SCRs

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