Cummins ISB 6.7L SCR Outlet Catalyst Module 2011-2014: OEM 4354209
CUMMINS ISB 6.7L SCR OUTLET CATALYST MODULE 2011-2014: OEM 4354209
ORDERS PLACED BEFORE 3PM EST WILL SHIP SAME DAY
WARRANTY
1M MILES OR 1 YEAR
PRODUCT DESCRIPTION
This is a Remanufactured Tamerx SCR Outlet Catalyst Module, Tamerx part number 4354209RM-SCR ( OEM Part Number 4354209 ). 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, production years 2011-2014, and comes with a One Million Miles or One Year Warranty. For additional warranty info Click Here
OEM NUMBERS
| Primary OEM | 4354209 |
| Additional OEM | 4354209, 5505923 |
ADDITIONAL DETAILS
| CONDITION | Remanufactured |
| UPC / Barcode | 00840490557017 |
| WEIGHT | 88.00 LBS |
SHIPPING OPTIONS
Ship Weight : 88.00 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 handle the demanding requirements of diesel exhaust treatment, the Cummins ISB 6.7L SCR Outlet Catalyst Module (2011–2014) OEM 4354209 is an important part of the vehicle’s aftertreatment system. Manufactured according to original equipment specifications, it provides accurate fitment for Cummins ISB 6.7L engines within the specified model years. This module assists the selective catalytic reduction process by treating exhaust gases and helping reduce nitrogen oxide (NOx) emissions before they leave the system. Its durable construction is designed to tolerate elevated exhaust temperatures, vibration, and challenging heavy-duty operating conditions. Suitable for fleet maintenance and professional diesel repair applications, this OEM SCR outlet catalyst module helps preserve proper emissions system function and dependable long-term service.
FITMENT CHART
| YEAR | MAKE | ENGINE(S) | ||||
|---|---|---|---|---|---|---|
| 2011 | Cummins | ISB 6.7L | ||||
| 2012 | Cummins | ISB 6.7L | ||||
| 2013 | Cummins | ISB 6.7L | ||||
| 2014 | Cummins | ISB 6.7L | ||||
PEOPLE ALSO ASKS | BLOG(S)
The Cummins ISB 6.7L SCR Outlet Catalyst Module (OEM 4354209) is built as a long-service-life component of the exhaust aftertreatment system. Unlike filters and other regularly serviced parts, an SCR catalyst typically does not have a simple fixed replacement interval. Its actual lifespan depends heavily on engine condition, operating environment, DEF quality, exhaust temperatures, and maintenance of the surrounding aftertreatment system.
Cummins' aftertreatment coverage programs demonstrate that SCR catalysts are designed for substantial service periods, with B6.7 aftertreatment coverage options extending to several years and hundreds of thousands of miles in certain applications. Coverage periods, however, should not be interpreted as a guaranteed lifespan.
What Determines the Life of the SCR Catalyst?
- DEF quality
- Contaminated, diluted, or incorrect Diesel Exhaust Fluid can interfere with SCR operation and contribute to deposits or catalyst deterioration.
- Condition of the DEF dosing system
- Incorrect dosing can reduce NOx conversion efficiency and potentially create deposits within the aftertreatment system.
- Engine health
- Excessive oil consumption, coolant entering the exhaust, or abnormal combustion can contaminate the catalyst and shorten its useful life.
- Operating temperatures
- SCR catalysts need appropriate exhaust temperatures to operate effectively. Repeated exposure to abnormal temperatures can contribute to deterioration.
- Condition of upstream components
- Problems with the DOC, DPF, sensors, or other aftertreatment components can affect the exhaust conditions reaching the SCR catalyst.
- Vehicle operating habits
- Heavy idling, frequent short trips, and consistently low exhaust temperatures can create less favorable conditions for the aftertreatment system.
How Do You Know When It Is Wearing Out?
An aging or damaged OEM 4354209 SCR Outlet Catalyst Module may contribute to SCR efficiency fault codes, emissions warning lights, increased DEF-related problems, or engine derates. However, these symptoms do not automatically mean the catalyst has failed. DEF dosing problems, NOx sensor faults, exhaust leaks, and other aftertreatment issues can produce similar symptoms.
Getting the Most Life From Your SCR Catalyst
There is no reliable mileage figure at which OEM 4354209 should automatically be replaced. The best approach is condition-based maintenance: use proper DEF, keep the engine and aftertreatment system maintained, investigate fault codes promptly, and correct oil, coolant, or exhaust-system problems before they damage the catalyst.
With good operating conditions and proper maintenance, the Cummins ISB 6.7L SCR Outlet Catalyst Module is intended to remain in service for a substantial portion of the vehicle's working life rather than being treated as a routine replacement item.
The SCR Outlet Catalyst Module on a Cummins ISB 6.7L is an important part of the aftertreatment system. It helps reduce nitrogen oxide (NOx) emissions before exhaust gases leave the system. When the catalyst begins to deteriorate, the engine control system may detect poor SCR efficiency and trigger several warning signs.
Here are some common symptoms to watch for:
- Check engine or emissions warning light
- An SCR-related problem may illuminate the check engine light or another aftertreatment warning indicator.
- Recurring SCR efficiency fault codes
- Catalyst efficiency or NOx conversion codes that repeatedly return can indicate that the SCR catalyst is no longer performing as expected.
- Engine derate or reduced power
- If an emissions fault remains unresolved, the Cummins engine may eventually enter a derate condition that limits engine output or vehicle operation.
- Abnormal NOx readings
- If downstream NOx levels remain too high despite proper DEF dosing, the SCR catalyst may not be converting NOx effectively.
- Increased or abnormal DEF consumption
- Changes in DEF usage can accompany SCR system problems, although this symptom can also be caused by the DEF dosing system or faulty sensors.
- Physical damage to the catalyst module
- Cracks, severe corrosion, impact damage, or signs of excessive heat can indicate that the module needs further inspection.
- Persistent problems after other SCR components are checked
- If the NOx sensors, DEF injector, wiring, temperature sensors, and exhaust system are functioning correctly but SCR efficiency faults continue, the outlet catalyst module may be failing.
These symptoms don't automatically mean the SCR Outlet Catalyst Module itself is bad. Faulty NOx sensors, contaminated DEF, DEF dosing problems, exhaust leaks, or other aftertreatment faults can produce similar symptoms. A complete diagnostic test should be performed before replacing the module to confirm the root cause and avoid unnecessary repairs.
Yes. Excessive oil consumption, coolant entering the exhaust, abnormal combustion, or other upstream engine problems can contaminate or damage an SCR catalyst.
Yes. Severe overheating, impact, contamination, or abnormal operating conditions can damage the internal catalyst substrate.
Yes. Exhaust leaks around clamps, joints, gaskets, or adjoining pipes can affect aftertreatment operation and sensor readings.
Technicians should inspect the DEF dosing system, NOx sensors, temperature sensors, exhaust connections, clamps, gaskets, wiring, and upstream aftertreatment components before completing the replacement.
Cummins SCR Outlet Catalyst Modules
