Cummins QSB 6.7L, B6.7 Temp Sensor 2018-2024: OEM 4384577
CUMMINS QSB 6.7L, B6.7 TEMP SENSOR 2018-2024: OEM 4384577
ORDERS PLACED BEFORE 3PM EST WILL SHIP SAME DAY
WARRANTY
1M MILES OR 1 YEAR
PRODUCT DESCRIPTION
This is a Genuine New, Cummins Temp Sensor, Cummins part number 4384577OE ( OEM Part Number 4384577 ).This part is primarily made for a Cummins QSB 6.7L, 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 | 4384577 |
| Additional OEM | 4384577 |
ADDITIONAL DETAILS
| CONDITION | Genuine New |
| UPC / Barcode | 00840490552852 |
| WEIGHT | 2.00 LBS |
SHIPPING OPTIONS
Ship Weight : 2.00 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"
Designed for 2018–2024 Cummins QSB 6.7L and B6.7 applications, the Temp Sensor with OEM 4384577 is an important component of both engine management and emissions aftertreatment systems. This sensor accurately measures critical temperature data—such as exhaust or intake air temperatures—and sends that information to the engine control module (ECM). Reliable temperature feedback helps the ECM make precise adjustments to combustion, fuel delivery, and aftertreatment functions, which supports efficient operation and emissions compliance across varying conditions. Proper sensor performance can also help reduce drivability issues and minimize the occurrence of warning lights or diagnostic fault codes. This page provides application-specific details to assist with identifying the Cummins QSB 6.7L & B6.7 Temp Sensor 2018–2024 (OEM 4384577) for service and replacement needs.
FITMENT CHART
| YEAR | MAKE | ENGINE(S) | ||||
|---|---|---|---|---|---|---|
| 2018 | Cummins | QSB 6.7L | B6.7 | |||
| 2019 | Cummins | QSB 6.7L | B6.7 | |||
| 2020 | Cummins | QSB 6.7L | B6.7 | |||
| 2021 | Cummins | QSB 6.7L | B6.7 | |||
| 2022 | Cummins | QSB 6.7L | B6.7 | |||
| 2023 | Cummins | QSB 6.7L | B6.7 | |||
| 2024 | Cummins | QSB 6.7L | B6.7 | |||
PEOPLE ALSO ASKS | BLOG(S)
The Cummins temperature sensor, OEM 4384577, is a monitoring sensor used on Cummins QSB 6.7L and B6.7 engines for 2018–2024 applications. Its primary purpose is to measure temperature in a specific engine or aftertreatment location and send that data to the engine control module (ECM).
This sensor helps the ECM make correct operating decisions, protect components from overheating, and support stable emissions system operation.
What the temp sensor does
- Measures real-time temperature (engine or exhaust-related, depending on location)
- Sends an electrical signal to the ECM based on temperature changes
- Helps control emissions functions and system protection logic
- Supports regeneration timing when used in aftertreatment monitoring
- Helps trigger fault codes if readings are out of range
OEM 4384577 is a key Cummins temperature sensor that provides critical temperature feedback for safe and reliable operation in 2018–2024 QSB 6.7L and B6.7 engine applications.
You should replace your temperature sensor when it can no longer provide accurate readings and begins causing warning lights, drivability issues, or emissions system problems. Since temp sensors are precision electrical components, once they fail or become unreliable, replacement is the correct solution.
Replace your temp sensor when you notice:
- Check engine light / repeated fault codes
- If temperature-related codes keep returning after being cleared, the sensor is likely failing internally.
- Incorrect temperature readings
- Temperature readings that jump suddenly, stay stuck high/low, or don’t match real operating conditions are strong indicators.
- Cooling fan issues
- The fan may run constantly, run at the wrong time, or not activate when needed—especially with coolant temp sensor failure.
- Overheating or warning messages
- If the vehicle overheats or displays temperature warnings tied to sensor readings, replacement should be immediate.
- Regeneration problems (exhaust temp sensor)
- Failed exhaust temp sensors can cause incomplete regen cycles, frequent regen attempts, or emissions derate.
- Limp / restricted mode
- Some systems will derate to protect the engine or emissions system when temp signals are missing or unreliable.
- Corroded connector or damaged wiring confirmed
- If wiring checks out and the issue persists, the sensor itself should be replaced.
Replace a temp sensor when it causes repeated fault codes, unstable readings, cooling or regen issues, overheating warnings, or derate conditions. Waiting can lead to larger engine or emissions system damage.
Yes, the temperature sensor can typically be replaced on its own without replacing other components.
Incorrect readings can lead to improper aftertreatment behavior and diagnostic fault codes.
It helps the control unit determine when to initiate DPF regeneration based on exhaust temperature.
Yes, exposure to soot, heat cycling, and exhaust contaminants can impact sensor longevity.
Cummins Temp Sensors
