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Cummins X15 SCR 2018-2021: OEM 5418505

CUMMINS X15 SCR 2018-2021: OEM 5418505

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 NUMBER5418505
PART TYPESCR
BRANDTamerx Diesel Products
ENGINE MAKECummins
ENGINE TYPEX15
YEAR2018-2021
PART NUMBER5418505RM-SCR-2
APPLICATION NOTESAutocar, 485-565, EPA17

PRODUCT DESCRIPTION

This is a Remanufactured Tamerx SCR, Tamerx part number 5418505RM-SCR-2 ( OEM Part Number 5418505 ). 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 OEM5418505
Additional OEM5418505

ADDITIONAL DETAILS

CONDITIONRemanufactured
UPC / Barcode00840490550728
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.


Designed for 2018–2021 Cummins X15 engines, the Cummins X15 SCR (OEM 5418505) is a key component within the diesel exhaust aftertreatment system. This Selective Catalytic Reduction (SCR) unit works with diesel exhaust fluid (DEF) to convert nitrogen oxides in the exhaust stream into less harmful gases before they exit the vehicle. Built to meet original equipment specifications, it is engineered for proper fitment and reliable integration with existing 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 SCR unit with the OEM 5418505 helps maintain proper exhaust system operation 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 SCR (Selective Catalytic Reduction) system, OEM 5418505, is a key part of the emissions control system used in many Cummins X15 engines from 2018 to 2021. Its role is to reduce nitrogen oxide (NOx) emissions by using diesel exhaust fluid (DEF) to trigger chemical reactions that convert harmful gases into less harmful compounds. Proper care of the SCR system helps maintain reliable emissions control and supports the overall function of the aftertreatment system.

Since the SCR operates in a high-temperature exhaust environment and relies on precise chemical reactions, routine inspections and maintenance are important.

Tips for Maintaining Your Cummins X15 SCR System

  • Use high-quality diesel exhaust fluid (DEF)
    • Clean and properly stored DEF helps prevent contamination that could affect the SCR catalyst.
  • Keep the DEF system clean
    • Regularly inspect the DEF tank, lines, and injector to ensure they are free from buildup or blockages.
  • Inspect the exhaust system periodically
    • Check for leaks, cracks, or loose connections that may disrupt proper exhaust flow.
  • Address warning lights or fault codes promptly
    • Early diagnosis of emissions system alerts can prevent further issues within the SCR system.
  • Follow routine engine maintenance schedules
    • A properly maintained engine produces cleaner exhaust, which helps protect emissions components.

Why Regular Maintenance Matters

Taking care of the Cummins X15 SCR OEM 5418505 helps ensure consistent emissions treatment and supports the operation of the entire aftertreatment system. Routine inspections, proper DEF handling, and timely diagnostics can help extend the service life of this important emissions component.

If your Selective Catalytic Reduction (SCR) system is failing, it’s important to address the issue quickly. The SCR system helps reduce nitrogen oxide emissions in diesel vehicles by injecting diesel exhaust fluid (DEF) into the exhaust stream. When the system stops functioning properly, it can trigger warning lights, fault codes, or restrictions on vehicle operation.

The first step is to confirm the issue through a diagnostic scan. Modern diesel vehicles monitor the emissions system closely, and a scan tool can identify trouble codes related to the SCR catalyst, sensors, or DEF components.

If the SCR system is failing, you should consider the following steps:

  • Run a diagnostic scan
    • to identify emissions-related fault codes
  • Check the DEF fluid level and quality
    • to ensure it is not contaminated
  • Inspect the DEF injector
    • for clogs or dosing problems
  • Examine sensors and wiring
    • that monitor the emissions system
  • Replace the SCR catalyst
    • if it is contaminated or damaged

It’s also important to identify the root cause of the failure. Issues such as poor-quality DEF, faulty sensors, or engine-related problems can interfere with how the SCR system operates.

By diagnosing the issue early and correcting the underlying cause, you can restore proper emissions system function and help prevent further complications within the exhaust aftertreatment system.

It is often described as an outlet catalyst module within the diesel aftertreatment assembly.

The SCR stage occurs after particulate filtration to chemically treat nitrogen oxide gases in the exhaust.

Heavy-duty highway and vocational trucks using compatible X15 engines may include this catalyst module.

The unit contains a catalytic substrate that promotes chemical reactions as exhaust gases pass through the module.

Cummins SCRs