Cummins B6.7 Decomposition Reactor Tube 2018-2024: OEM 5418127
CUMMINS B6.7 DECOMPOSITION REACTOR TUBE 2018-2024: OEM 5418127
ORDERS PLACED BEFORE 3PM EST WILL SHIP SAME DAY
WARRANTY
1M MILES OR 1 YEAR
PRODUCT DESCRIPTION
This is a Remanufactured, Drive On Diesel Decomposition Reactor Tube, Drive On Diesel part number 5418127-OE ( OEM Part Number 5418127 ).This part is primarily made for a Cummins B6.7, production years 2018-2024, and comes with a One Million Miles or One Year Warranty. For additional warranty info Click Here
OEM NUMBERS
| Primary OEM | 5418127 |
| Additional OEM | 2042610X, 2363501, 5417856, 5418127, A057K131 |
ADDITIONAL DETAILS
| CONDITION | Remanufactured |
| UPC / Barcode | 00840490554818 |
| WEIGHT | 3.00 LBS |
SHIPPING OPTIONS
Ship Weight : 3.00 LBS
UPS Ground, 2nd Day Air, Next Day Air
SHIPPING POLICY
Drive On Diesel 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 Drive On Diesel 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.
Drive On Diesel 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 Drive On Diesel, 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). Drive On Diesel 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 Drive On Diesel, 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.
"This Product Doesn't Have a Core"
FITMENT CHART
| YEAR | MAKE | ENGINE(S) | ||||
|---|---|---|---|---|---|---|
| 2018 | Cummins | B6.7 | ||||
| 2019 | Cummins | B6.7 | ||||
| 2020 | Cummins | B6.7 | ||||
| 2021 | Cummins | B6.7 | ||||
| 2022 | Cummins | B6.7 | ||||
| 2023 | Cummins | B6.7 | ||||
| 2024 | Cummins | B6.7 | ||||
PEOPLE ALSO ASKS | BLOG(S)
Extending the life of your Cummins B6.7 Decomposition Reactor Tube (OEM 5418127) comes down to maintaining the conditions that allow it to properly mix and process Diesel Exhaust Fluid (DEF). Since this component is constantly exposed to heat, exhaust flow, and chemical reactions, small habits can make a big difference over time.
Instead of focusing only on the part itself, it’s important to care for the systems around it.
Here’s how to help it last longer:
- Use clean, high-quality DEF
- Contaminated or poor-quality DEF can lead to deposits forming inside the tube, which may restrict flow and reduce effectiveness.
- Avoid running the system with low DEF levels
- Inconsistent DEF supply can affect how the fluid is introduced and processed, leading to uneven buildup.
- Allow the engine to reach proper operating temperature
- The decomposition process relies on heat. Frequent short runs or low-temperature operation can prevent proper DEF breakdown.
- Minimize excessive idling
- Low exhaust temperatures during long idle periods can contribute to DEF crystallization and internal buildup.
- Address dosing or injector issues quickly
- A malfunctioning DEF injector can spray unevenly, causing deposits to form inside the reactor tube.
- Inspect for early signs of buildup or restriction
- Reduced efficiency, fault codes, or changes in exhaust behavior may indicate the tube needs attention.
- Keep the overall aftertreatment system in good condition
- Components like sensors and upstream filters directly affect how the reactor tube performs.
In simple terms, keeping your Cummins 5418127 reactor tube in good shape means ensuring proper DEF quality, maintaining correct operating temperatures, and addressing issues early—so buildup is minimized and the system continues to function smoothly.
A decomposition reactor tube doesn’t have a fixed replacement interval, so it isn’t typically changed based on mileage alone. Instead, replacement depends on its condition, operating environment, and how well the SCR system is maintained.
In many cases, this component can last a long time if the system is functioning properly. However, certain conditions can shorten its lifespan and require earlier replacement.
Here are key factors that determine when replacement may be needed:
- Visible DEF crystallization or buildup
- If deposits inside the tube become severe and restrict flow, replacement may be necessary if cleaning is no longer effective.
- Persistent SCR system fault codes
- Ongoing issues related to DEF dosing or decomposition may indicate the tube is no longer functioning properly.
- Reduced system efficiency
- If the SCR system struggles to process emissions correctly, the reactor tube may be contributing to the problem.
- Damage from heat or corrosion
- Cracks, warping, or internal deterioration caused by extreme temperatures can require immediate replacement.
- Repeated issues despite maintenance
- If problems continue after cleaning or repairs, it may be a sign the tube has reached the end of its service life.
Regular inspection is the best way to monitor its condition. Rather than replacing it on a schedule, it’s more effective to replace the decomposition reactor tube when signs of restriction, damage, or system inefficiency appear.
The 5418127 decomposition reactor tube converts diesel exhaust fluid (DEF) into ammonia and ensures it is properly mixed with exhaust gases before entering the SCR catalyst.
Cummins Decomposition Reactor Tubes
