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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-5
APPLICATION NOTESNavistar, 485-565, EPA17

PRODUCT DESCRIPTION

This is a Remanufactured Tamerx SCR, Tamerx part number 102-0291RM-SCR-5 ( 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 / Barcode00840490551688
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.


Start strong on the road with the Cummins X15 SCR 2018–2021: OEM 5418500, engineered to optimize emissions control for your heavy-duty engine. This genuine OEM Selective Catalytic Reduction unit enhances fuel economy while slashing harmful pollutants, keeping your rig EPA-compliant. Built for durability and seamless integration, it’s a reliable upgrade for demanding workloads. Trust in performance that powers your fleet further with confidence.

FITMENT CHART

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

PEOPLE ALSO ASKS | BLOG(S)

Maintaining a clean and compliant emissions system is essential for heavy-duty diesel trucks, and the Selective Catalytic Reduction (SCR) unit is a key part of that setup. For Cummins X15 engines from 2018 to 2021, the Cummins X15 SCR 2018–2021: OEM 5418500 provides the reliable exhaust aftertreatment performance you need to reduce harmful emissions while keeping your engine operating as intended.

    • The SCR assembly plays a crucial role in lowering nitrogen oxide (NOx) emissions by converting them into inert nitrogen and water,
      helping ensure your truck meets emissions requirements for highway applications.

    • The OEM 5418500 SCR unit is engineered specifically to fit Cummins X15 engines built between 2018 and 2021,
      offering proper compatibility and direct integration with the truck’s factory aftertreatment system.

    • Working with the DEF dosing system and exhaust components, this SCR assembly supports balanced emissions control,
      helping promote efficient DEF usage and effective exhaust cleaning.

    • Choosing the correct OEM SCR replacement can help reduce emissions warnings, fault codes, and conditions that lead
      to downtime or reduced performance.

    • A well-functioning SCR system helps support the health of your entire aftertreatment setup by minimizing excess emissions
      and reducing strain on related components.

    • Installing an OEM-quality part like the Cummins X15 SCR 2018–2021: OEM 5418500 gives you confidence in durability, fit,
      and long-term emissions performance.

If your Cummins X15 truck from 2018–2021 needs an SCR replacement, choosing the right component makes all the difference. The OEM 5418500 SCR assembly delivers the correct fit and dependable operation needed to keep your emissions system working cleanly and efficiently. At Tamerx Diesel Parts, we offer quality diesel components to help you reduce downtime and keep your truck performing on the road.

The Selective Catalytic Reduction (SCR) system is a critical part of modern diesel emissions control, helping reduce nitrogen oxide emissions through the use of diesel exhaust fluid (DEF). When SCR-related problems occur, the vehicle’s engine control module will often trigger warning lights or store diagnostic trouble codes. Recognizing these indicators early can help prevent engine derate and costly repairs.

  • Check engine light: One of the most common alerts when the SCR system detects abnormal performance.

  • DEF or SCR warning light: Many vehicles have a dedicated emissions or DEF system warning indicator.

  • NOx sensor fault codes: Codes related to upstream or downstream NOx sensors often point to SCR efficiency problems.

  • DEF dosing or injector codes: Faults involving the DEF injector or dosing module can signal improper exhaust treatment.

  • SCR efficiency codes: Codes indicating low catalyst efficiency suggest the SCR is not reducing emissions effectively.

  • Exhaust temperature or pressure codes: Abnormal sensor readings may indicate restriction, crystallization, or catalyst damage.

  • Engine derate warnings: Some systems provide alerts before power is reduced due to emissions non-compliance.

Warning lights and SCR-related codes should never be ignored, as they often indicate developing emissions system problems. Prompt diagnostics and repair help restore proper SCR function, prevent further damage, and maintain reliable vehicle operation.

Symptom indicators include recurring SCR or DEF warning lights, frequent fault codes, and engine derate conditions. These signals often mean the SCR system isn’t reducing NOx as it should.

Replacement is recommended when diagnostics show low NOx conversion efficiency or repeated emissions errors occur. Addressing the issue promptly helps maintain proper engine operation and compliance.

In many cases, the vehicle’s emissions system requires a reset or recalibration so the engine control unit recognizes the new filter. Technicians typically perform this step during installation.

A malfunctioning SCR filter can lead to poor engine efficiency and occasional derates, which may indirectly affect fuel consumption. Keeping the emissions system in good condition helps maintain consistent fuel use.

Cummins SCRs

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