Freightliner B6.7 DEF Head Unit 2014-2023: OEM 04-31923-000
FREIGHTLINER B6.7 DEF HEAD UNIT 2014-2023: OEM 04-31923-000
ORDERS PLACED BEFORE 3PM EST WILL SHIP SAME DAY
WARRANTY
1M MILES OR 1 YEAR
PRODUCT DESCRIPTION
This is a New, DuraWRX DEF Head Unit, DuraWRX part number ASPFL-2339 ( OEM Part Number 04-31923-000 ).This part is primarily made for a Freightliner B6.7, production years 2014-2023, and comes with a One Million Miles or One Year Warranty. For additional warranty info Click Here
Additional Notes: 10 Gallon Tank
OEM NUMBERS
| Primary OEM | 04-31923-000 |
| Additional OEM | 04-31923-000, 04-34396-000, 04-35162-000, 04-36003-000, 04-37385-000, 04-37614-000 |
ADDITIONAL DETAILS
| CONDITION | New |
| UPC / Barcode | 00840490556393 |
| WEIGHT | 6.00 LBS |
SHIPPING OPTIONS
Ship Weight : 6.00 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"
Ensure dependable DEF system operation with the Freightliner B6.7 DEF Head Unit 2014–2023 (OEM 04-31923-000). Designed specifically for Freightliner B6.7 applications, this DEF head unit helps monitor diesel exhaust fluid level, temperature, and quality to support proper emissions system performance. Manufactured to meet OEM specifications, it delivers precise fitment and reliable compatibility across the listed model years. Installing the correct DEF head unit helps maintain accurate system communication, efficient emissions control, and long-lasting reliability.
FITMENT CHART
| YEAR | MAKE | ENGINE(S) | ||||
|---|---|---|---|---|---|---|
| 2014 | Freightliner | B6.7 | ||||
| 2015 | Freightliner | B6.7 | ||||
| 2016 | Freightliner | B6.7 | ||||
| 2017 | Freightliner | B6.7 | ||||
| 2018 | Freightliner | B6.7 | ||||
| 2019 | Freightliner | B6.7 | ||||
| 2020 | Freightliner | B6.7 | ||||
| 2021 | Freightliner | B6.7 | ||||
| 2022 | Freightliner | B6.7 | ||||
| 2023 | Freightliner | B6.7 | ||||
PEOPLE ALSO ASKS | BLOG(S)
Extreme exhaust temperatures can damage the catalyst substrate over time. Preventing overheating helps preserve the effectiveness of the DOC.
Yes, loose connections or exhaust leaks can affect exhaust flow and sensor accuracy. Repairing leaks helps the emissions system perform correctly.
The correct OEM replacement ensures proper fitment and compatibility with the factory emissions system. This helps maintain reliable exhaust treatment and long-term performance.
Yes, continuing to operate with unresolved engine issues can increase soot and exhaust contamination. Addressing problems early helps extend the service life of the DOC.
Freightliner DEF Head Units
