Cummins L9 SCR 2022-2024: OEM 5418483
CUMMINS L9 SCR 2022-2024: OEM 5418483
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 5418483RM-SCR-2 ( OEM Part Number 5418483 ). 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 | 5418483 |
| Additional OEM | 5418483 |
ADDITIONAL DETAILS
| CONDITION | Remanufactured |
| UPC / Barcode | 00840490552296 |
| 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.
Designed for 2022–2024 Cummins L9 diesel applications, the SCR unit with OEM 5418483 is a key part of the exhaust aftertreatment system. This selective catalytic reduction module is engineered to match the L9 engine’s exhaust configuration and emissions sensor locations, ensuring proper integration with factory DEF (diesel exhaust fluid) delivery and control systems. Its role is to work with DEF to reduce nitrogen oxides (NOₓ) in the exhaust stream, supporting compliance with applicable emissions standards for these model years. Consistent SCR operation helps maintain stable exhaust flow and supports the performance of downstream aftertreatment components. This page provides application-specific information to assist with identifying the Cummins L9 SCR 2022–2024 (OEM 5418483) for service and replacement needs.
FITMENT CHART
| YEAR | MAKE | ENGINE(S) | ||||
|---|---|---|---|---|---|---|
| 2022 | Cummins | L9 | ||||
| 2023 | Cummins | L9 | ||||
| 2024 | Cummins | L9 | ||||
PEOPLE ALSO ASKS | BLOG(S)
The Cummins L9 SCR, OEM 5418483, is a core aftertreatment emissions component used on 2022–2024 Cummins L9 diesel engines. SCR stands for Selective Catalytic Reduction, and this unit is responsible for treating exhaust gases to reduce regulated emissions before they exit the vehicle.
Although it’s often referred to as an “SCR filter,” this component does not trap soot like a DPF. Instead, it functions as a catalyst module designed specifically to reduce nitrogen oxide (NOx) emissions through a chemical process.
The SCR system works in conjunction with Diesel Exhaust Fluid (DEF). DEF is injected into the exhaust stream upstream of the SCR unit. When DEF mixes with hot exhaust gases, it breaks down into ammonia. Inside the SCR catalyst (OEM 5418483), ammonia reacts with NOx and converts it into nitrogen and water vapor, which are far less harmful to the environment.
Key characteristics of OEM 5418483
- Designed for Cummins L9 engines (2022–2024)
- Part of the SCR aftertreatment stage
- Enables chemical NOx reduction
- Works with DEF dosing and emissions sensors
- Supports emissions compliance and system stability
Cummins OEM 5418483 is the SCR catalyst module that allows Cummins L9 engines to meet emissions requirements while maintaining proper aftertreatment operation.
You should replace your SCR (Selective Catalytic Reduction) system / SCR catalyst when it can no longer reduce NOx emissions effectively and continues triggering emissions faults—even after DEF system and sensor issues have been corrected. Since the SCR relies on chemical reactions, once it becomes contaminated or heat-damaged, it cannot be restored reliably.
Replace your SCR when you notice:
- Persistent NOx efficiency fault codes
- Codes like SCR efficiency below threshold or NOx conversion low that return after repairs usually indicate catalyst failure.
- Repeated derate or restricted mode
- Ongoing derate conditions are a strong sign the SCR is not meeting emissions requirements.
- DEF contamination has occurred
- Incorrect or contaminated DEF can permanently poison the SCR catalyst, even after flushing the system.
- Heavy DEF crystallization or internal restriction
- Crystal buildup can block exhaust flow and damage the catalyst structure.
- Thermal damage from excessive exhaust heat
- High exhaust temperatures can crack or degrade the SCR substrate and reduce conversion efficiency.
- Upstream issues corrected but SCR faults remain
- If DEF pumps, dosers, heaters, NOx sensors, and wiring are confirmed good but SCR-related faults persist, replacement is necessary.
Replace your SCR when it shows ongoing NOx efficiency failures, repeated derate conditions, or confirmed contamination/heat damage, especially after all DEF and upstream exhaust issues have been addressed.
It is installed in the aftertreatment section of the exhaust system downstream of the DEF injection point.
Diesel Exhaust Fluid (DEF) is used with this SCR catalyst to facilitate NOx conversion reactions.
Yes, it supports reduction of regulated nitrogen oxides in the exhaust to assist with emissions compliance.
Cummins SCRs
