
Cummins B6.7, L9 SCR 2018-2021: OEM 5418533
CUMMINS B6.7, L9 SCR 2018-2021: OEM 5418533

ORDERS PLACED BEFORE 3PM EST WILL SHIP SAME DAY

WARRANTY
1M MILES OR 1 YEAR
PRODUCT DESCRIPTION
This is a Remanufactured Tamerx SCR, Tamerx part number 5418533RM-SCR-2 ( OEM Part Number 5418533 ). 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 B6.7, L9, production years 2018-2021, and comes with a One Million Miles or One Year Warranty. For additional warranty info Click Here
OEM NUMBERS
| Primary OEM | 5418533 |
| Additional OEM | 5418533 |
ADDITIONAL DETAILS
| CONDITION | Remanufactured |
| UPC / Barcode | 00840490550902 |
| WEIGHT | 75.00 LBS |
SHIPPING OPTIONS
Ship Weight : 75.00 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.
Installed on 2018–2021 vehicles equipped with Cummins B6.7 and L9 engines, the SCR system identified by OEM 5418533 is a critical part of the diesel emissions aftertreatment setup. This selective catalytic reduction component is engineered to integrate with factory exhaust configurations and emissions sensors specific to B6.7 and L9 applications, ensuring proper operation within the emission control system. Its role is to work with diesel exhaust fluid (DEF) to reduce nitrogen oxide (NOₓ) emissions in the exhaust stream, helping these engines meet applicable emissions standards for the model years listed. Reliable SCR function supports consistent exhaust flow and aids the overall performance of downstream aftertreatment components. This page provides application-focused information to assist with accurate identification of the Cummins B6.7 and L9 SCR (OEM 5418533) for service and replacement needs.
FITMENT CHART
| YEAR | MAKE | ENGINE(S) | ||||
|---|---|---|---|---|---|---|
| 2018 | Cummins | B6.7 | L9 | |||
| 2019 | Cummins | B6.7 | L9 | |||
| 2020 | Cummins | B6.7 | L9 | |||
| 2021 | Cummins | B6.7 | L9 | |||
PEOPLE ALSO ASKS | BLOG(S)
No, an SCR (Selective Catalytic Reduction) catalyst should not be reused after professional servicing, and it is strongly recommended to replace it instead.
Even though professional servicing may remove some buildup, it cannot restore the SCR’s internal catalyst coating once it has been contaminated or degraded. SCR units commonly fail due to DEF crystallization, chemical poisoning, or thermal damage, and those issues permanently reduce the catalyst’s ability to convert NOx.
Reusing an SCR after servicing often leads to:
- Recurring NOx efficiency fault codes
- Repeated check engine/emissions warnings
- Continued derate or restricted operation
- Unstable DEF dosing corrections
- Short and unpredictable remaining service life
Since SCR function depends on precise chemical activity, once it’s compromised, cleaning does not bring it back to reliable condition.
No—SCR reuse after professional servicing is not recommended. Replacement is the most reliable solution to restore proper emissions operation and prevent repeat failures.
The SCR system reduces NOx emissions by converting them into nitrogen and water using DEF and a catalyst.
Yes, OEM 5418533 is a core component of the SCR emissions control system.
Yes, proper function of OEM 5418533 is essential for the SCR aftertreatment system to operate correctly.
The SCR assembly with part 5418533 is located in the aftertreatment section of the exhaust.















