
Cummins L9 SCR 2022-2024: OEM 5418145
CUMMINS L9 SCR 2022-2024: OEM 5418145

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 5418145RM-SCR ( 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 OEM | 5418145 |
ADDITIONAL DETAILS
| CONDITION | Remanufactured |
| UPC / Barcode | 00840490552210 |
| 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.
Built 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 engineered for precise fitment and seamless integration with the factory aftertreatment system. Constructed using durable materials, it is suited for the high-temperature conditions typical of heavy-duty diesel applications. The component helps maintain consistent aftertreatment function while meeting OEM specifications. It is well suited for fleet maintenance and targeted repair needs requiring dependable emissions management.
FITMENT CHART
| YEAR | MAKE | ENGINE(S) | ||||
|---|---|---|---|---|---|---|
| 2022 | Cummins | L9 | ||||
| 2023 | Cummins | L9 | ||||
| 2024 | Cummins | L9 | ||||
PEOPLE ALSO ASKS | BLOG(S)
Cummins L9 SCR 2022–2024: OEM 5418145 is a Selective Catalytic Reduction (SCR) catalyst module used in the aftertreatment system of Cummins L9 diesel engines for model years 2022 through 2024. This component is designed to manage exhaust emissions and help vehicles meet current EPA and CARB regulatory requirements.
As part of the SCR system, OEM 5418145 is responsible for treating exhaust gases after Diesel Exhaust Fluid is introduced upstream. Within the SCR catalyst, nitrogen oxide gases undergo a chemical reaction that converts them into nitrogen and water vapor before the exhaust exits the vehicle. This process significantly reduces harmful emissions released into the environment.
OEM 5418145 is engineered specifically for the Cummins L9 platform, ensuring proper fitment and compatibility with other aftertreatment components such as sensors, DEF dosing equipment, and exhaust piping. Its placement within the exhaust system allows it to function effectively under a wide range of operating conditions.
Key characteristics of the Cummins L9 SCR OEM 5418145 include:
- Designed for Cummins L9 engines from 2022–2024
- Functions as a core SCR catalyst within the aftertreatment system
- Supports nitrogen oxide reduction in the exhaust stream
- Integrates with DEF and emissions monitoring systems
Overall, OEM 5418145 is a critical emissions control component that helps maintain regulatory compliance and consistent exhaust treatment for Cummins L9-powered vehicles.
You should replace your SCR (Selective Catalytic Reduction) system only after thorough diagnostics confirm that the catalyst has suffered irreversible damage. SCR systems are designed for long service life, and many apparent failures are caused by upstream issues rather than the catalyst itself. Replacing the SCR too early, without correcting root causes, often results in repeat failures and unnecessary expense.
SCR replacement becomes necessary when performance problems persist even after corrective actions have been taken. This includes confirming DEF quality, repairing sensor faults, and resolving engine or emissions issues that could affect SCR operation. If efficiency-related fault codes continue after these steps, the catalyst may no longer be capable of proper NOx conversion.
Midway through the evaluation process, the following conditions typically indicate SCR replacement is required:
- Persistent SCR efficiency or NOx conversion fault codes
- Verified good DEF quality and proper DEF dosing operation
- NOx and exhaust temperature sensors tested and confirmed functional
- Evidence of catalyst poisoning from oil ash or coolant intrusion
- Thermal damage caused by excessive exhaust temperatures
- Failed ammonia storage or SCR conversion efficiency tests
Once these indicators are confirmed, replacement is the most reliable solution. However, it is critical to correct oil consumption, coolant leaks, EGR failures, and regeneration issues before installing a new SCR. Addressing root causes ensures long-term emissions compliance and prevents premature failure of the replacement unit.
Yes, it includes the internal catalyst substrate required for selective catalytic reduction.
Yes, professional installation is recommended to ensure proper sensor connections and sealing.
A system scan or reset is typically recommended following installation to ensure proper engine control communication.
Yes, it is engineered to comply with applicable emissions regulations for the supported model years.


























