
Cummins NOx Sensor 2022-2026: OEM 6304157
CUMMINS NOX SENSOR 2022-2026: OEM 6304157

ORDERS PLACED BEFORE 3PM EST WILL SHIP SAME DAY

WARRANTY
1M MILES OR 1 YEAR
PRODUCT DESCRIPTION
This is a Genuine New, Cummins NOx Sensor, Cummins part number 6304157-OE ( OEM Part Number 6304157 ).This part is primarily made for a Cummins , production years 2022-2026, and comes with a One Million Miles or One Year Warranty. For additional warranty info Click Here
Additional Notes: 16 Inch lead
OEM NUMBERS
| Primary OEM | 6304157 |
| Additional OEM | 6304157 |
ADDITIONAL DETAILS
| CONDITION | Genuine New |
| UPC / Barcode | 00840490553651 |
| WEIGHT | 1.00 LBS |
SHIPPING OPTIONS
Ship Weight : 1.00 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.
"This Product Doesn't Have a Core"
The Cummins NOx Sensor 2022–2026 (OEM 6304157) is designed to monitor nitrogen oxide levels within the exhaust system of compatible Cummins diesel engines. As a critical part of the emissions control system, this sensor continuously measures NOx concentrations and relays data to the engine control module to help maintain proper exhaust aftertreatment operation. Built to meet original equipment specifications, it ensures accurate readings and reliable communication with the vehicle’s emissions system. The sensor is engineered for fitment with select 2022–2026 Cummins applications, allowing for straightforward installation when replacing a faulty or worn unit. Constructed to withstand the high heat and demanding conditions of diesel exhaust environments, the OEM 6304157 NOx sensor helps support consistent emissions system functionality and compliance with current regulations.
FITMENT CHART
| YEAR | MAKE | ENGINE(S) | ||||
|---|---|---|---|---|---|---|
| 2022 | Cummins | |||||
| 2023 | Cummins | |||||
| 2024 | Cummins | |||||
| 2025 | Cummins | |||||
| 2026 | Cummins | |||||
PEOPLE ALSO ASKS | BLOG(S)
How Should I Take Care of My Cummins NOx Sensor 2022–2026: OEM 6304157?
The Cummins NOx Sensor (OEM 6304157) is a critical component within the emissions system of many modern diesel engines. Its primary function is to monitor nitrogen oxide (NOx) levels in the exhaust and relay this information to the engine control module (ECM). This allows the system to regulate diesel exhaust fluid (DEF) and maintain proper emissions control.
Since the sensor operates in a high-temperature exhaust environment, routine care and attention can help maintain accurate readings and prevent unnecessary system issues.
Key Tips to Care for Your Cummins NOx Sensor
- Keep the aftertreatment system clean
- Excess soot or residue from the DPF or SCR system can affect the sensor’s ability to measure exhaust gases correctly.
- Address warning lights promptly
- If diagnostic codes related to the NOx sensor appear, resolving them early can prevent additional strain on the emissions system.
- Protect wiring and connectors
- Damaged wires, loose connections, or corrosion can interrupt communication between the sensor and the ECM.
- Inspect the exhaust system regularly
- Issues with the DPF, SCR, or DEF system can influence sensor readings and lead to inaccurate data.
- Avoid excessive moisture exposure
- Water intrusion in the exhaust system can interfere with sensor operation.
Why Proper Maintenance Matters
A well-maintained Cummins NOx Sensor 6304157 helps ensure accurate emissions monitoring and stable operation of the entire aftertreatment system. Regular inspections and prompt attention to warning signs can help extend the service life of this essential component.
A failing NOx sensor can cause a variety of issues in a diesel vehicle, including warning lights, reduced fuel efficiency, and problems with the emissions system. Because the sensor measures nitrogen oxide levels in the exhaust, it plays an important role in helping the engine control module manage emissions properly.
If the sensor begins to fail, the first step is to confirm the issue with a diagnostic scan. A technician or scan tool can read fault codes that point to a malfunctioning NOx sensor or related components.
If a failing sensor is confirmed, you should consider the following steps:
- Run a diagnostic scan
- to identify stored fault codes
- Inspect wiring and connectors
- for corrosion or damage
- Check for exhaust leaks
- that may affect sensor readings
- Replace the faulty NOx sensor
- if testing confirms failure
- Clear fault codes and retest
- to ensure the issue is resolved
Ignoring a failing NOx sensor can lead to additional emissions system problems. In some cases, the vehicle may enter a reduced operation mode or trigger persistent warning lights until the issue is fixed.
Addressing the problem early helps prevent further complications in the emissions system. A proper diagnosis and timely sensor replacement can restore accurate exhaust monitoring and help keep the vehicle operating within emissions standards.
The Cummins NOx Sensor OEM 6304157 measures nitrogen oxide levels in the exhaust system and sends that data to the engine control module.
The sensor is installed in the exhaust stream where it can monitor nitrogen oxide levels from the engine.
The sensor works with the Selective Catalytic Reduction (SCR) system to help manage exhaust emissions.
It provides real-time exhaust gas data that allows the engine control module to regulate emissions correctly.



































