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Cummins L9 SCR 2022-2024: OEM 5507879

CUMMINS L9 SCR 2022-2024: OEM 5507879

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 NUMBER5507879
PART TYPESCR
BRANDTamerx Diesel Products
ENGINE MAKECummins
ENGINE TYPEL9
YEAR2022-2024
PART NUMBER5507879RM-SCR
APPLICATION NOTESNavistar 370-450 EPA21

PRODUCT DESCRIPTION

This is a Remanufactured Tamerx SCR, Tamerx part number 5507879RM-SCR ( OEM Part Number 5507879 ). 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 OEM5507879
Additional OEM5507879

ADDITIONAL DETAILS

CONDITIONRemanufactured
UPC / Barcode00840490551466
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.


Step into smarter emissions control with the Cummins L9 SCR 2022–2024: OEM 5507879, engineered to help reduce NOx output while boosting overall engine efficiency. This genuine SCR module meets exact OEM standards for a secure fit and rugged durability in demanding L9 applications. Built for the reliability modern diesel engines require, it supports emissions compliance without sacrificing performance. Count on a solution that keeps your truck running cleaner and stronger, mile after mile.

FITMENT CHART

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

PEOPLE ALSO ASKS | BLOG(S)

Emission control systems are a core part of modern diesel truck operation, helping vehicles meet regulatory standards while reducing harmful pollutants. The Cummins L9 SCR 2022–2024: OEM 5507879 is a Selective Catalytic Reduction (SCR) component engineered to lower nitrogen oxides (NOx) in exhaust, contributing to cleaner emissions and smoother truck operation. Focusing on how this SCR unit supports emission compliance can help truck owners and maintenance teams make informed choices when servicing or replacing parts.

  • Specifically designed for Cummins L9 engines from 2022 to 2024, the OEM 5507879 SCR unit integrates seamlessly into the emission aftertreatment system for precise fitment and dependable function.

  • The SCR (Selective Catalytic Reduction) system works by injecting diesel exhaust fluid (DEF) into the exhaust stream, where a catalytic reaction converts NOx into harmless nitrogen and water vapor.

  • Installing the genuine OEM 5507879 SCR ensures correct compatibility with your engine’s emission control strategy, reducing the likelihood of diagnostic trouble codes and unnecessary warning lights.

  • A properly functioning SCR supports accurate DEF dosing, which contributes to efficient NOx reduction and helps manage DEF use more effectively.

  • Replacing worn or malfunctioning SCR components with the right OEM part helps prevent emission faults that may lead to service interruptions or compliance issues.

  • Effective SCR performance improves communication between emission sensors and the engine control module, leading to smoother system response and fewer false alerts.

  • Built to meet Cummins’ original manufacturing standards, this SCR module is engineered to withstand heat, vibration, and the operating conditions typical of highway and regional trucking.

  • Installation is practical for service technicians and maintenance crews during scheduled emission system servicing or part replacement intervals.

Choosing the Cummins L9 SCR 2022–2024: OEM 5507879 from Tamerx Diesel Parts means equipping your emission control system with a high-quality, engine-specific component. With dependable SCR function and proactive maintenance, your truck will remain emission-compliant, dependable, and ready for the road ahead.

The Selective Catalytic Reduction (SCR) system is designed to provide long-lasting emissions control in modern diesel engines. Built to handle high temperatures and continuous operation, the SCR catalyst can last for many miles. However, there are certain situations where replacement becomes necessary to maintain proper performance and emissions compliance.

  • Persistent catalyst efficiency codes that remain after sensor and DEF system repairs may indicate internal SCR failure.

  • Severe contamination from oil or coolant entering the exhaust system can permanently damage the catalyst substrate.

  • Physical damage, such as cracking or internal substrate breakdown, may reduce the SCR’s ability to properly treat exhaust gases.

  • Repeated derate conditions or restart countdown warnings that cannot be resolved through standard repairs may point to a failing SCR.

  • Excessive ash or soot buildup caused by unresolved DPF issues can sometimes shorten SCR lifespan.

  • High mileage combined with declining emissions performance may signal the catalyst has reached the end of its service life.

SCR replacement should be considered only after proper diagnostics confirm the catalyst itself is faulty. Addressing related issues such as DEF quality, sensor operation, and engine leaks beforehand can help avoid unnecessary replacement and ensure the new SCR performs reliably for the long term

Frequent emissions warning lights, DEF system alerts, or NOx sensor codes can all point to issues. These symptoms often indicate the SCR or related components need inspection.

Yes, unresolved SCR or sensor problems can lead to reduced engine power or derate conditions. The system restricts performance to mitigate emissions until the issue is resolved.

Begin by checking DEF quality and level, then inspect sensors for accurate readings. These simpler checks often identify the root cause before inspecting the SCR unit itself.

While the SCR unit itself doesn’t need regular mechanical servicing, monitoring DEF and sensor health during routine maintenance is important. Staying on top of these items prolongs SCR effectiveness.

Cummins SCRs