Cummins ISG12, QSG12 SCR Outlet Catalyst Module 2011-2020: OEM 4328983
CUMMINS ISG12, QSG12 SCR OUTLET CATALYST MODULE 2011-2020: OEM 4328983
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 4328983RM-SCR ( OEM Part Number 4328983 ). 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 ISG12, QSG12, production years 2011-2020, and comes with a One Million Miles or One Year Warranty.
OEM NUMBERS
| Primary OEM | 4328983 |
| Additional OEM | 4328983 |
ADDITIONAL DETAILS
| CONDITION | Remanufactured |
| UPC / Barcode | 00840490553514 |
| WEIGHT | 35.00 LBS |
SHIPPING OPTIONS
Ship Weight : 35.00 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 to maintain proper exhaust treatment in heavy-duty diesel applications, the Cummins ISG12, QSG12 SCR Outlet Catalyst Module (2011–2020) OEM 4328983 supports the operation of the engine’s emissions control system. Manufactured according to original equipment specifications, this module is designed for proper fitment with applicable Cummins ISG12 and QSG12 engines within the specified model years. It functions within the selective catalytic reduction system, helping convert nitrogen oxide (NOx) emissions into nitrogen and water vapor before treated exhaust gases leave the system. Its durable construction is designed to withstand elevated exhaust temperatures, vibration, and demanding operating conditions commonly encountered in commercial vehicles and industrial diesel equipment. Suitable for fleet operators, maintenance technicians, and professional diesel repair facilities, this OEM SCR outlet catalyst module provides a dependable replacement solution for maintaining proper aftertreatment system function and reliable long-term operation.
FITMENT CHART
| YEAR | MAKE | ENGINE(S) | ||||
|---|---|---|---|---|---|---|
| 2011 | Cummins | ISG12 | QSG12 | |||
| 2012 | Cummins | ISG12 | QSG12 | |||
| 2013 | Cummins | ISG12 | QSG12 | |||
| 2014 | Cummins | ISG12 | QSG12 | |||
| 2015 | Cummins | ISG12 | QSG12 | |||
| 2016 | Cummins | ISG12 | QSG12 | |||
| 2017 | Cummins | ISG12 | QSG12 | |||
| 2018 | Cummins | ISG12 | QSG12 | |||
| 2019 | Cummins | ISG12 | QSG12 | |||
| 2020 | Cummins | ISG12 | QSG12 | |||
PEOPLE ALSO ASKS | BLOG(S)
The Cummins ISG12, QSG12 SCR Outlet Catalyst Module 2011-2020: OEM 4328983 is an important component of the Selective Catalytic Reduction (SCR) system, designed to help reduce harmful nitrogen oxide (NOx) emissions produced by compatible Cummins ISG12 and QSG12 diesel engines. It supports the chemical reactions that convert nitrogen oxides primarily into nitrogen and water vapor before exhaust gases leave the aftertreatment system.
The outlet catalyst works with other emissions-control components to support proper exhaust treatment and help maintain the intended emissions requirements of compatible engine applications.
What Does the SCR Outlet Catalyst Module Do?
- Reduces harmful NOx emissions The catalyst promotes chemical reactions that convert nitrogen oxides into less harmful substances before exhaust gases are released.
- Supports the SCR treatment process It provides the catalytic surface needed for effective NOx reduction as exhaust gases pass through the module.
- Works with Diesel Exhaust Fluid In DEF-equipped systems, ammonia produced from DEF reacts with nitrogen oxides inside the SCR catalyst.
- Completes an important stage of exhaust treatment The outlet catalyst helps reduce remaining nitrogen oxides before exhaust gases exit the aftertreatment system.
- Supports proper exhaust flow The module allows treated exhaust gases to pass through the catalyst along the intended exhaust pathway.
- Works with emissions monitoring components NOx and temperature sensors help the electronic control system evaluate exhaust conditions and SCR treatment effectiveness.
- Helps maintain emissions compliance Effective NOx reduction supports the emissions-control requirements established for compatible Cummins ISG12 and QSG12 applications.
Supporting Effective Exhaust Treatment
The Cummins ISG12, QSG12 SCR Outlet Catalyst Module (OEM 4328983) plays an essential role in maintaining proper exhaust treatment. If the catalyst becomes contaminated, damaged, restricted, or inefficient, it may contribute to SCR efficiency faults, abnormal NOx readings, emissions warning lights, or operating restrictions.
Using specification-correct DEF, maintaining related aftertreatment components, and addressing exhaust or sensor-related problems promptly can help protect the catalyst and support reliable operation.
An SCR Outlet Catalyst Module is an important component of a diesel engine's aftertreatment system. It helps reduce nitrogen oxide (NOx) emissions through a chemical reaction involving Diesel Exhaust Fluid (DEF). When the catalyst becomes damaged, contaminated, or ineffective, it can cause emissions-related problems and affect normal vehicle operation.
Here are several signs that your SCR Outlet Catalyst Module may be failing:
- Check engine or emissions warning light The engine control system may detect abnormal SCR operation and trigger warning lights on the dashboard.
- Recurring SCR efficiency fault codes Repeated diagnostic trouble codes related to catalyst efficiency may indicate that the module is no longer reducing NOx emissions effectively.
- Abnormal NOx sensor readings Higher-than-expected NOx levels downstream of the catalyst can indicate reduced conversion efficiency.
- Engine derate Persistent SCR system faults may cause the engine control system to restrict vehicle operation until the issue is corrected.
- Unusual DEF consumption Changes in DEF usage may indicate problems within the SCR system, although they do not necessarily confirm catalyst failure.
- Failed emissions testing A deteriorated SCR Outlet Catalyst Module may allow NOx emissions to exceed acceptable limits.
- Excessive catalyst contamination Oil, coolant, soot, or DEF deposits can accumulate on the catalyst material and interfere with its normal operation.
- Physical damage to the catalyst Cracked internal material, melted substrate, or damaged housing components can indicate serious catalyst deterioration.
- Abnormal exhaust temperatures Excessive heat can damage the catalyst substrate, while unusual temperature readings may indicate related aftertreatment problems.
These symptoms do not automatically mean the SCR Outlet Catalyst Module needs replacement. Faulty NOx sensors, incorrect DEF dosing, exhaust leaks, wiring problems, and engine-related issues can produce similar warning signs. A complete SCR system inspection can help identify the actual cause and determine whether the catalyst requires replacement.
OEM 4328983 is an SCR outlet catalyst module intended for compatible 2011–2020 Cummins ISG12 and QSG12 engine aftertreatment applications.
The 4328983 supports selective catalytic reduction by helping convert nitrogen oxides in the exhaust stream into nitrogen and water.
The 4328983 provides a catalyst section where exhaust gases undergo chemical reactions that help reduce nitrogen oxide emissions.
No, the 4328983 is intended for SCR-related nitrogen oxide treatment, while a DOC Filter primarily oxidizes carbon monoxide and unburned hydrocarbons.
Cummins SCR Outlet Catalyst Modules
