Cummins X15 SCR 2018-2021: OEM 5418110
CUMMINS X15 SCR 2018-2021: OEM 5418110
ORDERS PLACED BEFORE 3PM EST WILL SHIP SAME DAY
WARRANTY
1M MILES OR 1 YEAR
PRODUCT DESCRIPTION
This is a Remanufactured Tamerx SCR, Tamerx part number 5418110RM-SCR ( OEM Part Number 5418110 ). 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 OEM | 5418110 |
| Additional OEM | 5418110 |
ADDITIONAL DETAILS
| CONDITION | Remanufactured |
| UPC / Barcode | 00840490552180 |
| WEIGHT | 75.00 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 covering model years 2018–2021, OEM 5418110 is a selective catalytic reduction component designed to support exhaust emissions control and EPA compliance. This SCR unit is manufactured for precise fitment and seamless integration with the factory aftertreatment system. Constructed using durable materials, it is built to withstand the high-temperature conditions associated with heavy-duty diesel operation. The component supports consistent aftertreatment function while adhering to OEM specifications. It is well suited for fleet maintenance and specific repair applications where dependable emissions management is required.
FITMENT CHART
| YEAR | MAKE | ENGINE(S) | ||||
|---|---|---|---|---|---|---|
| 2018 | Cummins | X15 | ||||
| 2019 | Cummins | X15 | ||||
| 2020 | Cummins | X15 | ||||
| 2021 | Cummins | X15 | ||||
PEOPLE ALSO ASKS | BLOG(S)
The Cummins X15 SCR 2018–2021, OEM 5418110, is important because it plays a central role in emissions management for heavy-duty diesel trucks operating under strict regulatory standards. As emissions requirements became more demanding during these model years, this component helps ensure vehicles remain compliant during everyday use.
As part of the Selective Catalytic Reduction system, OEM 5418110 is responsible for treating exhaust gases after Diesel Exhaust Fluid is introduced into the exhaust stream. Through a controlled chemical reaction, nitrogen oxide emissions are converted into nitrogen and water vapor before exiting the vehicle. This process is essential for reducing harmful pollutants released into the environment.
Designed specifically for Cummins X15 engines from 2018 to 2021, this SCR module is engineered for accurate fitment and seamless integration with other aftertreatment components. A properly functioning SCR helps maintain system stability and reduces the likelihood of emissions-related warnings or derates.
Key reasons Cummins X15 SCR OEM 5418110 is important include:
- Supporting compliance with EPA and CARB emissions regulations
- Reducing nitrogen oxide emissions in the exhaust stream
- Working in coordination with DEF dosing systems
- Helping avoid emissions faults and unplanned downtime
For fleets and owner-operators, maintaining this SCR component is essential for reliable operation and long-term regulatory compliance.
The main cause of SCR (Selective Catalytic Reduction) failure in diesel engines is poor-quality or contaminated Diesel Exhaust Fluid (DEF). SCR systems rely on precise chemical reactions to convert harmful nitrogen oxides (NOx) into harmless nitrogen and water. When DEF becomes contaminated, degraded, or incorrectly formulated, that process breaks down and causes emissions failures.
DEF contamination can occur from improper storage, exposure to heat or sunlight, use of non-certified fluid, or accidental mixing with water, fuel, coolant, or dirt. Even minor contamination can lead to crystallization inside the DEF injector and dosing lines, restricting flow and preventing proper ammonia delivery to the SCR catalyst. Over time, this causes reduced NOx conversion efficiency and persistent fault codes.
While DEF issues are the leading cause, SCR failure is often accelerated by unresolved upstream engine problems. Midway through the failure process, the most common contributing factors include:
- Contaminated or incorrect DEF fluid
- DEF crystallization clogging injectors
- Faulty NOx or exhaust temperature sensors
- Excessive oil consumption or coolant leaks
- Overheating from failed regeneration events
In most cases, the SCR catalyst itself does not fail due to age or wear. Instead, it becomes poisoned or thermally damaged because underlying issues were left uncorrected. Proper DEF handling, early diagnostics, and timely repair of engine and emissions components are essential to preventing SCR failure and avoiding costly replacements.
In many cases, it can be accessed directly, but removal of some exhaust components may be necessary for clearance.
Yes, it is manufactured to Cummins’ original specifications for direct application on eligible engines.
A system scan or reset is typically recommended after installation to ensure proper communications with the engine controls.
Heavy-duty trucks and equipment powered by Cummins X15 engines from 2018 through 2021 use this SCR assembly.
Cummins SCRs
