Cummins L9 SCR 2022-2024: OEM 5418488
CUMMINS L9 SCR 2022-2024: OEM 5418488
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 5418488RM-SCR ( OEM Part Number 5418488 ). 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 | 5418488 |
| Additional OEM | 5418488 |
ADDITIONAL DETAILS
| CONDITION | Remanufactured |
| UPC / Barcode | 00840490552333 |
| 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.
Covering 2022–2024 Cummins L9 diesel platforms, the SCR unit (OEM 5418488) plays an important role in the exhaust aftertreatment system. This selective catalytic reduction module is engineered to align with factory exhaust configurations and emissions sensor locations specific to the L9 engine. Its purpose is to work with diesel exhaust fluid (DEF) to reduce nitrogen oxide (NOₓ) emissions in the exhaust stream, supporting compliance with applicable emissions standards. Reliable SCR operation helps maintain consistent exhaust flow and supports the effective function of downstream aftertreatment components. This page provides application-focused information to assist with accurate identification of the Cummins L9 SCR OEM 5418488 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 5418488, operates as part of the engine’s Selective Catalytic Reduction (SCR) aftertreatment system to reduce nitrogen oxide (NOx) emissions before exhaust gases leave the vehicle. Rather than trapping particles, this system relies on a controlled chemical reaction to clean the exhaust.
Here’s how it works step by step:
- 1) Exhaust enters the aftertreatment system
- After combustion, exhaust gases flow through the emissions system. By the time exhaust reaches the SCR stage, it contains NOx that must be treated to meet emissions requirements.
- 2) DEF is injected upstream
- The system injects Diesel Exhaust Fluid (DEF) into the exhaust stream before it reaches the SCR unit. DEF is a urea-based fluid designed specifically for SCR systems.
- 3) DEF converts into ammonia
- As DEF mixes with hot exhaust gases, it breaks down into ammonia, which is needed for the SCR reaction.
- 4) SCR catalyst converts NOx
- Inside the SCR catalyst (OEM 5418488), exhaust passes through a catalyst-coated structure. Ammonia reacts with NOx and converts it into:
- Nitrogen (N₂)
- Water vapor (H₂O)
- Inside the SCR catalyst (OEM 5418488), exhaust passes through a catalyst-coated structure. Ammonia reacts with NOx and converts it into:
- 5) Sensors regulate the process
- Temperature and NOx sensors monitor conditions before and after the SCR. The engine control module uses this data to adjust DEF dosing and confirm system efficiency.
The Cummins L9 SCR (OEM 5418488) works by using DEF and catalyst chemistry to convert NOx into safer exhaust gases, supporting emissions compliance and stable aftertreatment operation for 2022–2024 applications.
Yes, you can often still drive if your SCR (Selective Catalytic Reduction) system has gone bad, but it should only be considered a temporary situation, not a long-term solution.
The SCR system is responsible for reducing NOx emissions using DEF. When it fails, the vehicle may continue to operate normally at first, but the emissions system will quickly detect the issue and begin taking protective action.
What happens if you keep driving with a bad SCR?
- Check engine and emissions warning lights
- SCR and NOx-related fault codes typically remain active and return repeatedly.
- Derate or restricted operating mode
- Many vehicles will limit speed or engine operation if SCR faults are not corrected within a certain time or distance.
- Possible no-start countdown
- On some systems, continued operation with SCR faults can trigger a countdown that eventually prevents the vehicle from restarting.
- Abnormal DEF system behavior
- You may notice DEF warnings, dosing errors, or unusually high DEF usage as the system tries to compensate.
- Increased risk of additional emissions damage
- Driving too long with SCR issues can place added stress on NOx sensors, DEF dosing components, and exhaust hardware.
You may be able to drive short distances, but continuing to operate with a bad SCR is not recommended. SCR failures commonly lead to derate conditions and shutdown risks. Once the issue is confirmed, replacement should be addressed as soon as possible to avoid further complications and downtime.
Yes, the SCR outlet catalyst module can typically be serviced or replaced separately from the rest of the aftertreatment assembly.
It targets nitrogen oxides (NOx) in the exhaust stream to help manage emissions.
A restricted SCR catalyst can contribute to aftertreatment restriction warnings and lower conversion effectiveness.
Yes, proper DEF quality supports accurate chemical reactions in the SCR system.
Cummins SCRs
