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Tenneco DEF Head Unit

TENNECO DEF HEAD UNIT

Shipping ICON

ORDERS PLACED BEFORE 3PM EST WILL SHIP SAME DAY

WARRANTY ICON

WARRANTY
1M MILES OR 1 YEAR

$1,100.00

CORE CHARGE:

$250.00
iCORE DISCLAIMER: The CORE charge is a 30 day hold and will not be processed as long as the CORE is returned within 30 days. If you do not have a CORE or fail to return the CORE within 30 days, the CORE charge hold amount will be processed at that time.

AVAILABILITY IN STOCK
OEM NUMBER 82249729
PART TYPE DEF Head Unit
BRAND Tamerx Diesel Products
ENGINE MAKE
ENGINE TYPE
YEAR
PART NUMBER 1731-13-3
APPLICATION NOTES Tenneco
ADDITIONAL NOTES DEF Header, Coaxial Heater, 40 MICRON, 13"

PRODUCT DESCRIPTION

This is a Remanufactured, Tamerx DEF Head Unit, Tamerx part number 1731-13-3 ( OEM Part Number 82249729 ). This part is primarily made for a , and comes with a One Million Miles or One Year Warranty. For additional warranty info Click Here

Additional Notes: DEF Header, Coaxial Heater, 40 MICRON, 13"

OEM NUMBERS

Primary OEM82249729
Additional OEM82196510, 82224131, 82249729

ADDITIONAL DETAILS

CONDITIONRemanufactured
UPC / Barcode00840490541276
WEIGHT8.00 LBS

SHIPPING OPTIONS

Ship Weight : 8.00 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.


Take control of your emissions with the Tenneco DEF Head Unit — a precision-engineered, OEM-grade solution that constantly monitors DEF level, temperature, and quality to keep your SCR system performing at its peak. Built for durability and accuracy, this rugged unit integrates seamlessly with your engine electronics to help prevent derates, ensure compliance, and deliver dependable performance under all conditions.

PEOPLE ALSO ASKS | BLOG(S)

Modern diesel exhaust aftertreatment systems depend on accuracy, durability, and timely feedback. The Tenneco DEF Head Unit, built to OEM 82249729 (Tamerx part 1731-13-3) specifications, is one such component that often determines whether your DEF (Diesel Exhaust Fluid) system operates correctly. When it’s faulty—or the wrong version—you can get warning lights, error codes, or even engine derates that disrupt operations.

  • Monitors DEF fluid level, fluid temperature, and urea (quality) concentration, giving accurate readings to the engine control module

  • Comes with a 40-micron filter and coaxial heater to help maintain fluid cleanliness and prevent freezing or crystallization in cold conditions

  • Designed to be 13-inch in height, matching OEM geometry for easier drop-in installation

  • Built to handle the wear and tear of everyday use: vibration, thermal cycles, exposure to DEF fluid chemistry

  • Helps prevent common faults: system warnings, emissions faults, or derate events triggered by sensor drift or compromised components

  • Remanufactured by Tamerx and backed with a one-million-mile / one-year warranty—giving confidence and protection after installation

If you’ve ever experienced DEF system warnings, stall codes, or SCR (Selective Catalytic Reduction) issues, the DEF head unit is one of the first places to check. Choosing the correct OEM-matched unit like the 82249729 ensures you restore system accuracy, reduce downtime, and keep your vehicle emissions-compliant under all conditions.

The DEF (Diesel Exhaust Fluid) head unit is designed to monitor fluid level, temperature, and quality, ensuring diesel engines stay emissions-compliant. Since it works directly with DEF fluid, the quality of that fluid plays a major role in the head unit’s performance and longevity. Poor-quality or contaminated DEF can quickly lead to malfunctions, costly repairs, and unexpected downtime.

Effects of DEF Fluid Quality on the DEF Head Unit

  • Sensor Damage from Contaminants
    Dirt, debris, or water in DEF can coat or corrode sensitive sensors, leading to inaccurate readings.

  • False DEF Quality Alerts
    Substandard DEF may cause the head unit to trigger warnings, even when the sensors themselves are functioning correctly.

  • Accelerated Crystallization
    Impure or expired DEF is more prone to crystallization, which can build up around sensors and block proper operation.

  • Corrosion of Internal Components
    DEF that doesn’t meet ISO 22241 standards may contain impurities that shorten the lifespan of the head unit’s electronics.

  • Recurring Fault Codes
    Poor fluid quality often leads to diagnostic trouble codes (DTCs) such as P207F (DEF quality performance), which can escalate into derate conditions.

The quality of DEF fluid directly affects the reliability and durability of the DEF head unit. Always use certified, ISO-compliant DEF and store it properly to avoid contamination. Doing so not only protects the sensors but also helps keep your emissions system accurate, compliant, and dependable.

Excessive vibration or shock can damage sensors, loosen connections, or cause leaks and malfunctions.

Possible codes include level sensor out of range, temperature sensor fault, filter clog, or communication errors.

Always use ISO-compliant DEF, avoid air and moisture, check that heater and sensors are working, and maintain clean strainer.

The engine may go into reduced power mode, emit warning lights, or fail emissions regulation until the fault is corrected.

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