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Cummins L9 SCR 2022-2024: OEM 5418145

CUMMINS L9 SCR 2022-2024: OEM 5418145

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 NUMBER 5418145
PART TYPESCR
BRANDTamerx Diesel Products
ENGINE MAKECummins
ENGINE TYPEL9
YEAR2022-2024
PART NUMBER5418145RM-SCR-2
APPLICATION NOTESDennis Eagle 260-350 EPA21

PRODUCT DESCRIPTION

This is a Remanufactured Tamerx SCR, Tamerx part number 5418145RM-SCR-2 ( OEM Part Number 5418145 ). 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 L9, production years 2022-2024, and comes with a One Million Miles or One Year Warranty. For additional warranty info Click Here

OEM NUMBERS

Primary OEM 5418145
Additional OEM5418145

ADDITIONAL DETAILS

CONDITIONRemanufactured
UPC / Barcode00840490552227
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 L9 engines from model years 2022–2024, OEM 5418145 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. Built with durable materials, it is suited for the high-temperature conditions common in heavy-duty diesel applications. The component helps maintain consistent aftertreatment function while adhering to OEM specifications. It is well suited for fleet maintenance and targeted repair needs requiring reliable emissions management.

FITMENT CHART

YEARMAKEENGINE(S)
2022Cummins L9
2023Cummins L9
2024Cummins L9

PEOPLE ALSO ASKS | BLOG(S)

The Cummins L9 SCR 2022–2024, OEM 5418145, is a key emissions system component that directly impacts day-to-day fleet operations. For fleet operators managing uptime, compliance, and maintenance costs, this SCR unit plays an important role in keeping vehicles road-ready and regulation compliant.

Integrated into the exhaust aftertreatment system, OEM 5418145 is responsible for treating exhaust gases once Diesel Exhaust Fluid has been introduced upstream. As exhaust moves through the SCR catalyst, nitrogen oxide emissions are chemically converted into nitrogen and water vapor before exiting the vehicle. This process helps fleets operate within current EPA and CARB emissions standards.

Designed specifically for Cummins L9 engines used from 2022 through 2024, this SCR module is built for consistent operation across diverse duty cycles, including regional haul, vocational use, and stop-and-go routes. Its reliability supports predictable maintenance planning and reduced emissions-related disruptions.

For fleet operators, the Cummins L9 SCR OEM 5418145 helps with:

  • Maintaining compliance across multiple vehicles
  • Reducing the risk of emissions warnings and derates
  • Supporting consistent exhaust treatment in daily operations
  • Minimizing unplanned downtime tied to aftertreatment issues

By keeping this SCR component in proper working condition, fleet managers can protect vehicle availability, avoid regulatory setbacks, and support long-term operational stability across their L9-powered assets.

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

One of the first indicators is an illuminated check engine or emissions warning light, often accompanied by reduced engine performance. As SCR efficiency declines, the engine control module detects higher-than-normal NOx levels and sets fault codes related to emissions conversion. Changes in DEF usage are also common, either increased consumption from over-dosing or reduced usage due to restricted injectors.

Midway through diagnosis, the most common signs of a failing SCR system include:

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

In advanced stages, the SCR catalyst may be poisoned by oil ash, sulfur, or coolant, or damaged by excessive heat. These conditions prevent proper ammonia storage and NOx conversion and cannot be corrected through software resets or cleaning. When symptoms persist after confirming DEF quality, sensor accuracy, and upstream engine health, SCR replacement is typically required.

Yes, it is designed for direct installation into the factory exhaust aftertreatment assembly.

It is part of the emissions control system that treats exhaust before it exits the vehicle.

Yes, it is shaped to align with the existing exhaust mounting configuration.

Yes, it is made to interface with the factory wiring harness and electronic control systems.

Cummins SCRs