Cummins L9 SCR 2022-2024: OEM 5508188
CUMMINS L9 SCR 2022-2024: OEM 5508188
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 5508188RM-SCR-1 ( OEM Part Number 5508188 ). 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 | 5508188 |
| Additional OEM | 5508188 |
ADDITIONAL DETAILS
| CONDITION | Remanufactured |
| UPC / Barcode | 00840490549357 |
| 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 to support proper emissions control, the Cummins L9 SCR 2022–2024, OEM Part Number 5508188, is designed for select L9 engine applications as part of the selective catalytic reduction system. This SCR component helps reduce NOx emissions by working in conjunction with DEF to treat exhaust gases before they exit the aftertreatment system. Manufactured to meet OEM specifications, it delivers accurate fitment and dependable durability for demanding commercial and vocational environments. A restricted or failing SCR component can trigger warning lights, increased exhaust temperatures, or other aftertreatment concerns, making timely replacement important. Tamerx Diesel Products LLC supplies trusted diesel aftertreatment components to help keep your Cummins L9 engine operating cleanly and reliably.
FITMENT CHART
| YEAR | MAKE | ENGINE(S) | ||||
|---|---|---|---|---|---|---|
| 2022 | Cummins | L9 | ||||
| 2023 | Cummins | L9 | ||||
| 2024 | Cummins | L9 | ||||
PEOPLE ALSO ASKS | BLOG(S)
Proper maintenance of your Cummins L9 SCR OEM 5508188 is essential for maintaining effective NOx reduction and reliable aftertreatment system operation. The SCR (Selective Catalytic Reduction) unit works with Diesel Exhaust Fluid (DEF) to convert harmful nitrogen oxide emissions into nitrogen and water vapor.
Because the SCR relies on clean DEF, accurate dosing, and proper exhaust temperatures, maintaining the entire DEF and aftertreatment system is critical.
To properly maintain your Cummins L9 SCR system:
- Use only DEF that meets ISO 22241 quality standards
- Store DEF in sealed containers away from extreme temperatures
- Keep the DEF tank cap tightly closed to prevent contamination
- Inspect DEF lines for leaks or crystallization buildup
- Address fault codes and warning lights promptly
- Maintain proper engine service intervals
- Ensure NOx sensors and temperature sensors are functioning correctly
Contaminated or poor-quality DEF can damage the catalyst inside the SCR unit and reduce NOx conversion efficiency. Crystallized DEF buildup in the dosing system can also affect proper operation.
It’s also important to maintain clean combustion. Excessive soot or oil consumption can contaminate downstream aftertreatment components over time.
If you notice reduced engine operation modes, emissions warnings, or repeated fault codes, diagnostics should be performed quickly to prevent long-term damage.
By maintaining clean DEF, monitoring related sensors, and keeping the engine properly serviced, you can help extend the service life of your Cummins L9 SCR OEM 5508188 and support consistent emissions system performance.
The SCR (Selective Catalytic Reduction) system reduces NOx emissions by injecting Diesel Exhaust Fluid into the exhaust stream. Because it includes multiple components—such as the catalyst, NOx sensors, and doser injector—serviceability depends on which part is failing.
In many cases, the SCR system is serviceable, but the catalyst itself is not repairable.
The SCR system may be serviceable if the issue involves:
- Faulty NOx sensors
- DEF contamination or low-quality fluid
- Malfunctioning DEF doser injector
- Damaged wiring or connectors
- Minor exhaust leaks
Correcting these related issues can often restore proper SCR function without replacing the catalyst.
However, replacement is typically required if there is:
- Internal catalyst substrate cracking or melting
- Severe DEF crystallization buildup
- Prolonged overheating damage
- Persistent NOx efficiency fault codes after repairs
- Confirmed internal flow restriction
Once the catalyst coating or internal structure is damaged, it cannot be repaired in a conventional sense.
A professional diagnostic inspection is essential. A technician will review NOx readings, verify DEF dosing, inspect related components, and confirm whether the SCR catalyst itself has failed.
Early diagnosis improves the chance that supporting components can be serviced before full SCR replacement becomes necessary.
Yes, it is designed to integrate with the engine’s original emissions sensors and control systems for accurate monitoring and function.
Common indicators include recurring SCR system fault codes or warnings related to emissions aftertreatment.
Yes, professional installation is recommended to ensure proper sealing, sensor connections, and system readiness.
Using the correct OEM 5508188 SCR Filter ensures proper NOx conversion and reliable integration with the engine’s emissions control system.
Cummins SCRs
Product OEM 5418490
