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Cummins ISB 6.7L, ISL SCR Outlet Catalyst Module 2011-2016: OEM 4376603

CUMMINS ISB 6.7L, ISL SCR OUTLET CATALYST MODULE 2011-2016: OEM 4376603

Shipping ICON

ORDERS PLACED BEFORE 3PM EST WILL SHIP SAME DAY

WARRANTY ICON

WARRANTY
1M MILES OR 1 YEAR

$4,995.00

CORE CHARGE:

$500.00
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.

AVAILABILITY IN STOCK
OEM NUMBER4376603
PART TYPESCR Outlet Catalyst Module
BRANDTamerx Diesel Products
ENGINE MAKECummins
ENGINE TYPEISB 6.7L, ISL
YEAR2011-2016
PART NUMBER4376603RM-SCR
APPLICATION NOTESEPA13, EPA10

PRODUCT DESCRIPTION

This is a Remanufactured Tamerx SCR Outlet Catalyst Module, Tamerx part number 4376603RM-SCR ( OEM Part Number 4376603 ). 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 ISB 6.7L, ISL, production years 2011-2016, and comes with a One Million Miles or One Year Warranty. For additional warranty info Click Here

OEM NUMBERS

Primary OEM4376603
Additional OEM4376603, 5506116

ADDITIONAL DETAILS

CONDITIONRemanufactured
UPC / Barcode00840490555921
WEIGHT90.00 LBS

SHIPPING OPTIONS

Ship Weight : 90.00 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.


FITMENT CHART

YEARMAKEENGINE(S)
2011Cummins ISB 6.7L ISL
2012Cummins ISB 6.7L ISL
2013Cummins ISB 6.7L ISL
2014Cummins ISB 6.7L ISL
2015Cummins ISB 6.7L ISL
2016Cummins ISB 6.7L ISL

PEOPLE ALSO ASKS | BLOG(S)

Diesel aftertreatment components regularly experience major temperature changes as exhaust conditions shift during everyday operation and regeneration events. The Cummins ISB 6.7L, ISL SCR Outlet Catalyst Module 2011-2016: OEM 4376603 is constructed for this demanding environment while providing the catalyst structure needed for continued exhaust treatment within the SCR system.

  • OEM 4376603 is intended for compatible 2011-2016 Cummins ISB 6.7L and ISL applications.
  • High-temperature catalyst construction allows the module to operate within the heated environment of a diesel aftertreatment system.
  • Handles repeated thermal cycling as exhaust temperatures rise during regeneration and decrease during normal operating conditions.
  • Catalyst substrate provides extensive surface area where exhaust-treatment reactions can occur as gases pass through the module.
  • Protective outer housing helps secure the internal catalyst structure while exposed to heat and vibration.
  • Application-specific inlet and outlet geometry maintains the intended exhaust path through compatible aftertreatment components.
  • Factory-style dimensions and mounting locations simplify replacement while preserving the original exhaust-system arrangement.

The Cummins ISB 6.7L, ISL SCR Outlet Catalyst Module OEM 4376603 combines heat-resistant construction with application-specific fitment for the demanding environment of diesel exhaust treatment. It is a practical option for customers searching for a Cummins SCR catalyst replacement, ISB 6.7L SCR outlet catalyst, Cummins ISL SCR module, or OEM 4376603.

Fuel economy can be affected when a faulty SCR Outlet Catalyst Module disrupts normal aftertreatment operation, although the impact may be indirect. Problems within the SCR system can trigger fault codes, alter engine management strategies, or create exhaust restrictions that make the engine operate less efficiently.

  • Increased exhaust restriction: A damaged or contaminated module may restrict exhaust flow and increase backpressure.
  • Reduced engine efficiency: Excessive backpressure can make the engine work harder under certain operating conditions.
  • Frequent fault conditions: SCR-related problems may cause the ECM to adjust engine operation in response to emissions system faults.
  • DEF system issues: Improper DEF dosing associated with SCR problems can interfere with efficient aftertreatment operation.
  • Engine derate: Severe SCR faults may reduce available power, potentially changing how the vehicle operates and uses fuel.
  • Related component failures: Faulty NOx sensors, DEF injectors, or temperature sensors can contribute to both SCR problems and inefficient operation.
  • Recurring warning lights: Persistent SCR or emissions warnings indicate a problem that should be diagnosed before additional issues develop.

A faulty SCR Outlet Catalyst Module does not always cause a noticeable drop in fuel economy, so increased fuel consumption alone is not enough to confirm failure. Checking fault codes, exhaust restriction, DEF operation, sensors, and catalyst condition can help determine whether the SCR system is contributing to reduced efficiency.

White deposits can be associated with DEF crystallization caused by improper dosing, poor atomization, or unsuitable exhaust temperatures. The DEF dosing system should be inspected if heavy deposits are present.

Yes. Poor DEF and exhaust mixing can reduce the effectiveness of the SCR reaction and contribute to uneven deposits. The mixer and surrounding components should be checked during diagnosis.

A significant restriction can increase exhaust backpressure and interfere with normal aftertreatment operation. Deposits, contamination, or internal damage should be investigated if restriction is suspected.

Frequent low-speed or low-load operation can make it harder for the exhaust system to maintain favorable temperatures. This may contribute to deposits or reduced SCR efficiency over time.

Cummins SCR Outlet Catalyst Modules