Cummins ISB, QSB 4.5L, QSB 6.7L SCR Outlet Catalyst Module 2010-2012: OEM 4353066
CUMMINS ISB, QSB 4.5L, QSB 6.7L SCR OUTLET CATALYST MODULE 2010-2012: OEM 4353066
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 4354221RM-SCR ( OEM Part Number 4353066 ). 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, QSB 4.5L, QSB 6.7L, production years 2010-2012, and comes with a One Million Miles or One Year Warranty.
Additional Notes: Notes: Newer SCR-washcoat revision; visually interchangeable with the preceding unit. ALT PNs: 5291477 - obsolete predecessor
OEM NUMBERS
| Primary OEM | 4353066 |
| Additional OEM | 4353066, 5291477 |
ADDITIONAL DETAILS
| CONDITION | Remanufactured |
| UPC / Barcode | 00840490557871 |
| WEIGHT | 101.00 LBS |
SHIPPING OPTIONS
Ship Weight : 101.00 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.
Handling an important stage of the exhaust treatment process, the Cummins ISB, QSB 4.5L, QSB 6.7L SCR Outlet Catalyst Module (2010–2012) OEM 4353066 helps maintain proper aftertreatment system operation. Manufactured according to original equipment specifications, it provides accurate compatibility with applicable Cummins ISB, QSB 4.5L, and QSB 6.7L engines within the specified model years. This catalyst module works within the selective catalytic reduction system to help convert nitrogen oxide (NOx) emissions into less harmful compounds before treated exhaust gases leave the system. Its durable construction is designed to withstand elevated exhaust temperatures, vibration, and demanding diesel operating conditions. Suitable for equipment maintenance and professional diesel service, this OEM SCR outlet catalyst module helps maintain consistent emissions system function and dependable long-term operation.
FITMENT CHART
| YEAR | MAKE | ENGINE(S) | ||||
|---|---|---|---|---|---|---|
| 2010 | Cummins | ISB | QSB 4.5L | QSB 6.7L | ||
| 2011 | Cummins | ISB | QSB 4.5L | QSB 6.7L | ||
| 2012 | Cummins | ISB | QSB 4.5L | QSB 6.7L | ||
PEOPLE ALSO ASKS | BLOG(S)
The Cummins ISB, QSB 4.5L, QSB 6.7L SCR Outlet Catalyst Module 2010-2012: OEM 4353066 is an important component of the diesel engine’s Selective Catalytic Reduction (SCR) aftertreatment system. Its main function is to help reduce harmful nitrogen oxide (NOx) emissions before treated exhaust gases leave the system.
The module works with Diesel Exhaust Fluid (DEF) and other emissions components to complete an important stage of exhaust treatment.
What Does the SCR Outlet Catalyst Module Do?
- Reduces NOx emissions
- The catalyst provides the surface where ammonia derived from DEF reacts with nitrogen oxides.
- Works with the DEF system
- DEF introduced upstream is converted into ammonia needed for the SCR chemical reaction.
- Converts targeted pollutants
- The SCR process transforms NOx primarily into nitrogen and water vapor.
- Supports final exhaust treatment
- The module operates later in the aftertreatment process before exhaust exits the system.
- Works with emissions sensors
- NOx and temperature sensor readings help the control system monitor exhaust conditions and SCR operation.
- Supports emissions compliance
- Proper catalyst operation helps compatible Cummins ISB and QSB applications maintain their intended emissions-control requirements.
An Important Stage of the SCR System
The Cummins SCR Outlet Catalyst Module (OEM 4353066) is essential because effective NOx reduction depends on proper DEF dosing, exhaust temperature, and catalyst condition. If the module becomes contaminated, damaged, or inefficient, the system may experience SCR efficiency fault codes, emissions warning lights, DEF-related issues, or operating restrictions.
Using specification-correct DEF and addressing injector, sensor, exhaust, or engine-related problems promptly can help protect the catalyst and maintain dependable aftertreatment operation.
A failing SCR Outlet Catalyst Module can prevent the aftertreatment system from reducing nitrogen oxide (NOx) emissions correctly. Because SCR components work together, proper diagnosis is important before assuming the catalyst module itself is defective.
Common warning signs include:
- Recurring emissions fault codes
- SCR efficiency or NOx-related codes that repeatedly return may indicate declining catalyst effectiveness.
- Abnormal downstream NOx readings
- If NOx levels remain higher than expected after passing through the SCR system, the catalyst may not be converting emissions properly.
- Check engine or emissions warning light
- The vehicle's control system may trigger a dashboard warning after detecting abnormal SCR operation.
- Engine derate
- Persistent emissions faults can cause the control system to limit vehicle operation until the problem is corrected.
- Failed emissions testing
- A deteriorated catalyst may prevent the vehicle from meeting required NOx emission limits.
- Visible catalyst damage
- Cracking, melting, severe discoloration, or damaged internal substrate can indicate excessive heat or physical deterioration.
- Heavy contamination
- Oil, coolant, soot, or excessive DEF deposits can coat the catalyst and interfere with the chemical reactions occurring inside it.
- Persistent problems after related components are checked
- If the DEF injector, NOx sensors, wiring, and exhaust system are functioning correctly but SCR faults remain, the catalyst module may require further testing.
A warning light or fault code alone does not confirm a bad SCR Outlet Catalyst Module. DEF quality problems, incorrect dosing, faulty NOx sensors, exhaust leaks, wiring issues, and engine-related problems can produce similar symptoms. A complete aftertreatment system diagnosis should be performed before replacing the module.
The 4353066 should be verified using the engine serial number, engine model, model year, emissions configuration, and original aftertreatment part number before installation.
Yes, excessive oil entering the exhaust stream can contaminate the catalyst material and reduce the effectiveness of the 4353066.
Yes, coolant contamination can damage or coat the catalyst substrate and should be corrected before a replacement 4353066 is installed.
Damaged or leaking connections can allow exhaust to escape around the module and interfere with proper aftertreatment-system operation.
Cummins SCR Outlet Catalyst Modules
