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PowerTraxx Vehicles Cummins DEF Head Unit

POWERTRAXX VEHICLES CUMMINS DEF HEAD UNIT

Shipping ICON

ORDERS PLACED BEFORE 3PM EST WILL SHIP SAME DAY

WARRANTY ICON

WARRANTY
1M MILES OR 1 YEAR

$895.00

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 TR1700-634-01
PART TYPE DEF Head Unit
BRAND Tamerx Diesel Products
ENGINE MAKE Cummins
ENGINE TYPE
YEAR
PART NUMBER 4310-18-34
APPLICATION NOTES PowerTraxx Vehicles
ADDITIONAL NOTES DEF Header, 40 MICRON, 18"

PRODUCT DESCRIPTION

This is a Remanufactured, Tamerx DEF Head Unit, Tamerx part number 4310-18-34 ( OEM Part Number TR1700-634-01 ). This part is primarily made for a Cummins , and comes with a One Million Miles or One Year Warranty. For additional warranty info Click Here

Additional Notes: DEF Header, 40 MICRON, 18"

OEM NUMBERS

Primary OEMTR1700-634-01
Additional OEMTR1700-634-01

ADDITIONAL DETAILS

CONDITIONRemanufactured
UPC / Barcode00840490541467
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.


Get ready to dominate emissions compliance with the PowerTraxx Vehicles Cummins DEF Head Unit — engineered for precision and built for reliability in DuraWRX applications (OEM TR1700-634-01). This remanufactured, rugged unit delivers real-time monitoring of DEF level, temperature, and quality, ensuring your SCR system performs seamlessly and protects against derates. With an 18" 40-micron header and backed by Tamerx’s 1-million mile / 1-year warranty, it’s the performance upgrade your rig needs — dependable, compliant, and tough as nails.

PEOPLE ALSO ASKS | BLOG(S)

When your vehicle uses a Cummins engine with the PowerTraxx setup, one of the components that quietly keeps your emissions system running correctly is the DEF (Diesel Exhaust Fluid) head unit. The OEM TR1700-596-01 version ensures fluid level, temperature, and dosing data stay accurate. If this unit fails or drifts, you could face warning lights, SCR system errors, or even engine derates — all of which can bring operations to a halt.

  • Monitors DEF tank level, fluid temperature, and urea concentration (quality), sending precise data to the engine control module

  • Controls DEF dosing into the exhaust stream so that the SCR (Selective Catalytic Reduction) system can reduce NOx emissions properly

  • Built to the OEM TR1700-596-01 specification to guarantee compatibility with PowerTraxx Cummins configurations

  • Helps prevent emissions warning codes, system faults, and engine power derates triggered by bad or inconsistent sensor readings

  • Designed to stand up to harsh conditions — vibration, thermal cycling, and exposure to DEF’s chemical properties

  • Replacement is made simpler when using an OEM-matched unit, reducing downtime and restoring system integrity

Because the DEF head unit plays a central role in maintaining emissions accuracy, replacing it with the correct version is not just a repair—it’s restoring the backbone of your aftertreatment system. The PowerTraxx Cummins DEF Head Unit (OEM TR1700-596-01) gets you back on track with confidence, keeping your vehicle compliant and reliable on every route.

 
 

The DEF (Diesel Exhaust Fluid) head unit plays a vital role in keeping a vehicle’s emissions system compliant by monitoring DEF level, temperature, and quality. Since the head unit interacts directly with the fluid, the quality of DEF has a direct impact on its performance and lifespan. Using poor-quality or contaminated DEF can cause serious problems for this sensitive component.

Effects of DEF Fluid Quality on the DEF Head Unit

  • Sensor Damage from Contaminants
    Dirt, debris, or water in DEF can damage delicate sensors and lead to false readings or failures.

  • False DEF Quality Warnings
    Substandard fluid can trigger alerts about poor DEF quality, even when the sensors are working correctly.

  • Crystallization Build-Up
    Low-grade or expired DEF is more prone to crystallizing, which can coat sensors and block accurate monitoring.

  • Corrosion Risks
    DEF that doesn’t meet ISO 22241 standards may contain impurities that corrode electronic components inside the head unit.

  • Frequent Fault Codes
    Poor fluid quality can cause repeated diagnostic trouble codes (DTCs), such as P207F (DEF quality performance), potentially leading to derate conditions.

The quality of DEF fluid has a major influence on the reliability and durability of the DEF head unit. To avoid unnecessary failures, always use ISO-compliant DEF and store it properly to prevent contamination. Doing so helps protect sensors, reduce false alerts, and keep your vehicle running smoothly and emissions-compliant.

Warning lights, error codes, or the engine going into reduced power are typical signs.

With proper DEF quality and care, it can last several years.

Yes, inaccurate readings or failure can trigger derate to protect emissions compliance.

It should be inspected during routine DEF or emissions service checks.

Cummins DEF Head Units

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