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DEF Sensor : OEM ASP01RS18-FF

DEF SENSOR : OEM ASP01RS18-FF

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WARRANTY ICON

WARRANTY
1M MILES OR 1 YEAR

$1,000.00

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AVAILABILITY IN STOCK
OEM NUMBERASP01RS18-FF
PART TYPEDEF Sensor
BRANDDuraWRX
ENGINE MAKE
ENGINE TYPE
YEAR
PART NUMBERASP01RS18-FF
ADDITIONAL NOTESDEF Sensor, Level, Analog

PRODUCT DESCRIPTION

This is a New, DuraWRX DEF Sensor, DuraWRX part number ASP01RS18-FF ( OEM Part Number ASP01RS18-FF ). 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 Sensor, Level, Analog

OEM NUMBERS

Primary OEMASP01RS18-FF
Additional OEM728026, 910439, 1454714, 10057139, 10785125, 1454714OSH, ASP01RS18-FF

ADDITIONAL DETAILS

CONDITIONNew
UPC / Barcode
WEIGHT3.00 LBS

SHIPPING OPTIONS

Ship Weight : 3.00 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 DEF Sensor OEM ASP01RS18-FF provides accurate and consistent diesel exhaust fluid readings to ensure your emissions system runs efficiently. Designed to meet strict OEM requirements, this sensor delivers dependable communication with the SCR system, promoting smooth operation and compliance with emissions standards. Its durable build withstands harsh environments, making it a reliable replacement for restoring proper DEF system function. Ideal for minimizing downtime and keeping your vehicle operating without disruption.

PEOPLE ALSO ASKS | BLOG(S)

Diesel Exhaust Fluid (DEF) systems play a critical role in controlling emissions in modern diesel engines. A properly functioning DEF sensor ensures accurate monitoring of fluid levels and temperatures. When the DEF sensor begins to fail—such as with issues related to OEM ASP01RS18-FF—it can trigger fault codes and may cause the engine to reduce power as a protective measure.

Common Impacts of a Bad DEF Sensor:

  • Triggered Engine Derate Mode
    Faulty readings may force the engine into reduced power mode to comply with emissions regulations.

  • Incorrect DEF Level Reporting
    When the DEF sensor misreports fluid levels, the system might think the tank is empty and activate warnings.

  • False Diagnostic Trouble Codes (DTCs)
    Malfunctions can set off multiple error codes, leading to unnecessary repairs or inspections.

  • Sudden Warning Lights
    Drivers may see “Service DEF System” or “Check Engine” lights due to incorrect sensor data.

  • Increased Downtime
    If unresolved, DEF sensor issues can result in operational delays and added repair costs.

The DEF Sensor OEM ASP01RS18-FF is a reliable replacement designed to restore accurate readings and prevent engine derate issues. At Tamerx Diesel Parts, we provide dependable emissions system components to help you maintain compliance and minimize downtime. If you’re seeing power loss warnings or DEF system alerts, it may be time to replace your DEF sensor.

The DEF (Diesel Exhaust Fluid) sensor plays a critical role in keeping your diesel emissions system compliant and functional. It monitors DEF level, temperature, and quality—helping your engine control emissions and avoid costly downtime. Like any sensor, it can wear out or malfunction over time, but with the right maintenance practices, you can help ensure it stays reliable for the long haul.

Best Practices to Extend the Life of a DEF Sensor:

  • Use Certified DEF Fluid – Always fill your DEF tank with high-quality, ISO 22241-compliant DEF to prevent contamination and sensor damage.

  • Keep the Fill Area Clean – Dirt or debris entering the DEF tank during refills can cause deposits or interfere with sensor accuracy.

  • Avoid Overfilling – Spilled DEF can reach electrical connections and cause corrosion, leading to premature sensor failure.

  • Inspect for Corrosion – Regularly check the sensor connectors and harness for signs of rust, corrosion, or loose connections.

  • Protect Against Freezing – In cold climates, make sure the DEF system’s heating components are working to prevent freeze damage to the sensor.

  • Flush Contaminated Fluid – If contamination is suspected, flush the tank and refill with fresh DEF to protect the sensor and system.

  • Perform Periodic Diagnostics – Use a scan tool to check for sensor-related codes or inconsistencies in readings during routine service checks.

Proper care of your DEF sensor not only ensures accurate emissions control but also helps avoid unnecessary repairs and engine derates. Sticking to clean filling practices, regular inspections, and high-quality DEF fluid are simple but effective ways to keep your DEF sensor operating at its best for years to come.

 
 

A malfunctioning sensor may result in false low-level warnings, DEF quality alerts, or check engine lights.

With clean DEF and regular maintenance, the sensor can last several years without failure.

Yes, using poor-quality DEF or allowing debris into the tank can damage the sensor components.

While it is designed to be low-maintenance, external inspection and using clean DEF help prevent buildup.

 

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