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Cummins QSL 8.9L SCR Outlet Catalyst Module 2013-2020: OEM 4376799

CUMMINS QSL 8.9L SCR OUTLET CATALYST MODULE 2013-2020: OEM 4376799

Shipping ICON

ORDERS PLACED BEFORE 3PM EST WILL SHIP SAME DAY

WARRANTY ICON

WARRANTY
1M MILES OR 1 YEAR

$5,995.00

CORE CHARGE:

$1,000.00
iCORE DISCLAIMER: The CORE charge is a 30 day hold and will not be processed as long as the CORE is returned within 30 days. If you do not have a CORE or fail to return the CORE within 30 days, the CORE charge hold amount will be processed at that time.

AVAILABILITYCALL FOR AVAILABILITY
OEM NUMBER4376799
PART TYPESCR Outlet Catalyst Module
BRANDTamerx Diesel Products
ENGINE MAKECummins
ENGINE TYPEQSL 8.9L
YEAR2013-2020
PART NUMBER4376799RM-SCR
APPLICATION NOTESCrane
WARRANTY
One Million Miles or One Year

PRODUCT DESCRIPTION

This is a Remanufactured Tamerx SCR Outlet Catalyst Module, Tamerx part number 4376799RM-SCR ( OEM Part Number 4376799 ). 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 QSL 8.9L, production years 2013-2020, and comes with a One Million Miles or One Year Warranty.

OEM NUMBERS

Primary OEM4376799
Additional OEM4376799, A049Y750

ADDITIONAL DETAILS

CONDITIONRemanufactured
UPC / Barcode00840490554948
WEIGHT100.00 LBS

SHIPPING OPTIONS

Ship Weight : 100.00 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 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, 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 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 dependable emissions performance, the Cummins QSL 8.9L SCR Outlet Catalyst Module 2013–2020 (OEM 4376799) helps keep your aftertreatment system operating efficiently. Engineered specifically for Cummins QSL 8.9L engines, this SCR outlet catalyst module supports effective NOx reduction while promoting proper exhaust treatment and reliable system function. Manufactured to meet OEM specifications, it provides precise fitment and dependable compatibility across the listed model years. Installing the correct SCR outlet catalyst module helps maintain consistent emissions control, proper exhaust flow, and long-lasting reliability.

FITMENT CHART

YEARMAKEENGINE(S)
2013Cummins QSL 8.9L
2014Cummins QSL 8.9L
2015Cummins QSL 8.9L
2016Cummins QSL 8.9L
2017Cummins QSL 8.9L
2018Cummins QSL 8.9L
2019Cummins QSL 8.9L
2020Cummins QSL 8.9L

PEOPLE ALSO ASKS | BLOG(S)

The Cummins QSL 8.9L SCR Outlet Catalyst Module 2013-2020 OEM 4376799 is a vital component that supports the final stage of diesel exhaust aftertreatment. One of the most searched topics related to SCR outlet catalyst modules is how they help complete the emissions reduction process after DEF has been introduced. Replacing the module with the correct OEM component helps maintain proper exhaust treatment and dependable system operation.

  • OEM 4376799 is designed for 2013-2020 Cummins QSL 8.9L engine applications, providing OEM-quality fit and compatibility.
  • Supports the final phase of the Selective Catalytic Reduction (SCR) system, helping complete the treatment of exhaust gases.
  • Engineered to work with the factory aftertreatment assembly, ensuring proper integration with surrounding emissions components.
  • Constructed with high-temperature catalyst materials designed to withstand demanding diesel exhaust conditions.
  • Maintains consistent exhaust gas flow, supporting efficient operation of the complete aftertreatment system.
  • Direct-fit design aligns with original mounting points and exhaust connections, simplifying installation on compatible applications.
  • Built for dependable long-term durability, making it a reliable replacement for restoring the function of the SCR outlet catalyst module.

The Cummins QSL 8.9L SCR Outlet Catalyst Module 2013-2020 OEM 4376799 is a dependable solution for maintaining reliable emissions system operation. With its OEM-quality construction, precise fitment, and durable catalyst design, it helps support effective exhaust aftertreatment and long-lasting performance for compatible Cummins QSL 8.9L applications.

Yes, a damaged SCR Outlet Catalyst Module can contribute to engine derate issues. As part of the Selective Catalytic Reduction (SCR) system, the module helps ensure the aftertreatment system is operating correctly and meeting emissions requirements. When it becomes damaged or loses efficiency, the engine control module may reduce engine power to protect the vehicle and maintain emissions compliance.

  • The check engine light or SCR warning light may illuminate when the module detects a fault.
  • Diagnostic trouble codes related to SCR efficiency, catalyst performance, or NOx reduction are commonly stored.
  • Engine derate mode may activate, reducing available power and, in some cases, limiting vehicle speed.
  • Reduced SCR efficiency can increase NOx emissions, prompting the engine control module to restrict performance.
  • Faults involving related components, such as NOx sensors, DEF injectors, or temperature sensors, can produce similar derate symptoms and should also be inspected.
  • Continuing to drive with an unresolved SCR fault may place additional stress on other aftertreatment components.
  • A complete diagnostic inspection is necessary to confirm whether the SCR Outlet Catalyst Module is the source of the derate or if another emissions system component is responsible.

Addressing a damaged SCR Outlet Catalyst Module promptly helps restore normal engine operation and prevent recurring derate conditions. Early diagnosis and repair also protect the aftertreatment system, improve reliability, and maintain proper emissions performance.

The DEF injector, NOx sensors, temperature sensors, wiring, clamps, and exhaust piping should all be inspected. Checking these parts helps ensure proper SCR operation.

Yes, continuous heavy-duty operation increases thermal stress on the aftertreatment system. Routine maintenance helps keep the catalyst operating efficiently.

Loose or damaged mounting points can cause excessive movement and vibration. Proper support helps protect the catalyst housing from premature wear.

Yes, replacing a damaged or ineffective catalyst module can restore proper NOx conversion. This helps the engine meet required emissions standards when the rest of the SCR system is functioning correctly.

Cummins SCR Outlet Catalyst Modules

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