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DEF QUALITY SENSOR

The DEF (Diesel Exhaust Fluid) sensor plays a crucial role in the Selective Catalytic Reduction (SCR) system of heavy-duty trucks. It measures the level and quality of DEF in the storage tank and communicates this information to the engine control unit.

Customers should choose Advanced Truck Parts for their DEF sensor needs due to our commitment to quality and customer satisfaction. We offer a wide range of genuine DEF sensors for various heavy-duty truck makes and models, ensuring high-quality and reliable performance. Our experienced team provides expert guidance and support in selecting the right DEF sensor and addressing any technical inquiries. Moreover, we offer competitive pricing without compromising on quality, providing cost-effective solutions. With our comprehensive inventory, exceptional customer service, and dedication to delivering reliable DEF sensors, Advanced Truck Parts is the trusted choice for customers seeking accurate DEF level monitoring and optimal SCR system performance in their heavy-duty trucks.

  • 325008618K Genuine Generic DEF Sensor 18" - ADVANCED TRUCK PARTS
    325008618K Genuine Generic DEF Sensor 18" - ADVANCED TRUCK PARTS

    325008618K Genuine Generic DEF Sensor 18"

    Generic
    $1,599.00 - $1,599.00
    $1,599.00
    $1,599.00 - $1,599.00
    $1,599.00
    Low stock

    Description: DEF Sensor 18"Condition: NewBrand: Generic Part Number: 325008618KOther OEM Part Numbers That Will Work: 325-0086-18-K, 325008618K, 32...

    View full details
    $1,599.00 - $1,599.00
    $1,599.00
    $1,599.00 - $1,599.00
    $1,599.00
  • 325-0086-18-K Genuine Generic DEF Sensor 18" - ADVANCED TRUCK PARTS
    325-0086-18-K Genuine Generic DEF Sensor 18" - ADVANCED TRUCK PARTS

    325-0086-18-K Genuine Generic DEF Sensor 18"

    Generic
    $1,599.00 - $1,599.00
    $1,599.00
    $1,599.00 - $1,599.00
    $1,599.00
    Low stock

    Description: DEF Sensor 18"Condition: NewBrand: Generic Part Number: 325-0086-18-KOther OEM Part Numbers That Will Work: 325-0086-18-K, 325008618K,...

    View full details
    $1,599.00 - $1,599.00
    $1,599.00
    $1,599.00 - $1,599.00
    $1,599.00
  • 4099716C91 Genuine Navistar International® 9.5 Gallon Def Tank Qls Sensor Head Unit - ADVANCED TRUCK PARTS
    4099716C91 Genuine Navistar International® 9.5 Gallon Def Tank Qls Sensor Head Unit - ADVANCED TRUCK PARTS

    4099716C91 Genuine Navistar International® 9.5 Gallon Def Tank Qls Sensor Head Unit

    INTERNATIONAL
    $1,299.00 - $1,299.00
    $1,299.00
    $1,299.00 - $1,299.00
    $1,299.00
    Low stock

    Description: 9.5 Gallon DEF Tank QLS Sensor Head Unit Condition: NewBrand: International Part Number: 4099716C91Other Oem Part Numbers That Will Wo...

    View full details
    $1,299.00 - $1,299.00
    $1,299.00
    $1,299.00 - $1,299.00
    $1,299.00
  • 4254201C91 Genuine Navistar International® 9.5 Gallon Def Tank Qls Sensor Head Unit - ADVANCED TRUCK PARTS
    4254201C91 Genuine Navistar International® 9.5 Gallon Def Tank Qls Sensor Head Unit - ADVANCED TRUCK PARTS

    4254201C91 Genuine Navistar International® 9.5 Gallon Def Tank Qls Sensor Head Unit

    INTERNATIONAL
    $1,299.00 - $1,299.00
    $1,299.00
    $1,299.00 - $1,299.00
    $1,299.00
    Low stock

    Description: 9.5 Gallon DEF Tank QLS Sensor Head Unit Condition: NewBrand: International Part Number: 4254201C91Other Oem Part Numbers That Will Wo...

    View full details
    $1,299.00 - $1,299.00
    $1,299.00
    $1,299.00 - $1,299.00
    $1,299.00
  • 5012181R91 Genuine Navistar International® 9.5 Gallon Def Tank Qls Sensor Head Unit - ADVANCED TRUCK PARTS
    5012181R91 Genuine Navistar International® 9.5 Gallon Def Tank Qls Sensor Head Unit - ADVANCED TRUCK PARTS

    5012181R91 Genuine Navistar International® 9.5 Gallon Def Tank Qls Sensor Head Unit

    INTERNATIONAL
    $1,299.00 - $1,299.00
    $1,299.00
    $1,299.00 - $1,299.00
    $1,299.00
    Low stock

    Description: 9.5 Gallon DEF Tank QLS Sensor Head Unit Condition: NewBrand: International Part Number: 5012181R91Other Oem Part Numbers That Will Wo...

    View full details
    $1,299.00 - $1,299.00
    $1,299.00
    $1,299.00 - $1,299.00
    $1,299.00
  • 22306785 Genuine Volvo Def Level Sensor For Adblue Tank 70 L - ADVANCED TRUCK PARTS
    22306785 Genuine Volvo Def Level Sensor For Adblue Tank 70 L - ADVANCED TRUCK PARTS
    Sold out

    22306785 Genuine Volvo Def Level Sensor For Adblue Tank 70 L

    VOLVO
    $858.96
    $858.96 - $858.96
    $858.96
    $685.00
    $685.00 - $685.00
    $685.00
    Out of stock

    Description: Def Level Sensor For Adblue Tank 70 LCondition: New Brand: VolvoPart Number: 22306785Other Oem Part Numbers That Will Work: 22432646, ...

    View full details
    $858.96
    $858.96 - $858.96
    $858.96
    $685.00
    $685.00 - $685.00
    $685.00
    Sold out
  • 21636394 Genuine Volvo Def Level Sensor For Adblue Tank 70 L - ADVANCED TRUCK PARTS
    21636394 Genuine Volvo Def Level Sensor For Adblue Tank 70 L - ADVANCED TRUCK PARTS
    Sold out

    21636394 Genuine Volvo Def Level Sensor For Adblue Tank 70 L

    VOLVO
    $858.96
    $858.96 - $858.96
    $858.96
    $685.00
    $685.00 - $685.00
    $685.00
    Out of stock

    Description: Def Level Sensor For Adblue Tank 70 LCondition: New Brand: VolvoPart Number: 21636394 Other Oem Part Numbers That Will Work: 22432646,...

    View full details
    $858.96
    $858.96 - $858.96
    $858.96
    $685.00
    $685.00 - $685.00
    $685.00
    Sold out
  • 21834302 Genuine Volvo Def Level Sensor For Adblue Tank 70 L - ADVANCED TRUCK PARTS
    21834302 Genuine Volvo Def Level Sensor For Adblue Tank 70 L - ADVANCED TRUCK PARTS
    Sold out

    21834302 Genuine Volvo Def Level Sensor For Adblue Tank 70 L

    VOLVO
    $858.96
    $858.96 - $858.96
    $858.96
    $685.00
    $685.00 - $685.00
    $685.00
    Out of stock

    Description: Def Level Sensor For Adblue Tank 70 LCondition: New Brand: VolvoPart Number: 21834302Other Oem Part Numbers That Will Work: 22432646, ...

    View full details
    $858.96
    $858.96 - $858.96
    $858.96
    $685.00
    $685.00 - $685.00
    $685.00
    Sold out
  • 21866608 Genuine Volvo Def Level Sensor For Adblue Tank 70 L - ADVANCED TRUCK PARTS
    21866608 Genuine Volvo Def Level Sensor For Adblue Tank 70 L - ADVANCED TRUCK PARTS
    Sold out

    21866608 Genuine Volvo Def Level Sensor For Adblue Tank 70 L

    VOLVO
    $858.96
    $858.96 - $858.96
    $858.96
    $685.00
    $685.00 - $685.00
    $685.00
    Out of stock

    Description: Def Level Sensor For Adblue Tank 70 LCondition: New Brand: VolvoPart Number: 21866608Other Oem Part Numbers That Will Work: 22432646, ...

    View full details
    $858.96
    $858.96 - $858.96
    $858.96
    $685.00
    $685.00 - $685.00
    $685.00
    Sold out
  • 21906237 Genuine Volvo Def Level Sensor For Adblue Tank 70 L - ADVANCED TRUCK PARTS
    21906237 Genuine Volvo Def Level Sensor For Adblue Tank 70 L - ADVANCED TRUCK PARTS
    Sold out

    21906237 Genuine Volvo Def Level Sensor For Adblue Tank 70 L

    VOLVO
    $858.96
    $858.96 - $858.96
    $858.96
    $685.00
    $685.00 - $685.00
    $685.00
    Out of stock

    Description: Def Level Sensor For Adblue Tank 70 LCondition: New Brand: VolvoPart Number: 21906237Other Oem Part Numbers That Will Work: 22432646, ...

    View full details
    $858.96
    $858.96 - $858.96
    $858.96
    $685.00
    $685.00 - $685.00
    $685.00
    Sold out
  • 22015705 Genuine Volvo Def Level Sensor For Adblue Tank 70 L - ADVANCED TRUCK PARTS
    22015705 Genuine Volvo Def Level Sensor For Adblue Tank 70 L - ADVANCED TRUCK PARTS
    Sold out

    22015705 Genuine Volvo Def Level Sensor For Adblue Tank 70 L

    VOLVO
    $858.96
    $858.96 - $858.96
    $858.96
    $685.00
    $685.00 - $685.00
    $685.00
    Out of stock

    Description: Def Level Sensor For Adblue Tank 70 LCondition: New Brand: VolvoPart Number: 22015705Other Oem Part Numbers That Will Work: 22432646, ...

    View full details
    $858.96
    $858.96 - $858.96
    $858.96
    $685.00
    $685.00 - $685.00
    $685.00
    Sold out
  • 22021891 Genuine Volvo Def Level Sensor For Adblue Tank 70 L - ADVANCED TRUCK PARTS
    22021891 Genuine Volvo Def Level Sensor For Adblue Tank 70 L - ADVANCED TRUCK PARTS
    Sold out

    22021891 Genuine Volvo Def Level Sensor For Adblue Tank 70 L

    VOLVO
    $858.96
    $858.96 - $858.96
    $858.96
    $685.00
    $685.00 - $685.00
    $685.00
    Out of stock

    Description: Def Level Sensor For Adblue Tank 70 LCondition: New Brand: VolvoPart Number: 22021891Other Oem Part Numbers That Will Work: 22432646, ...

    View full details
    $858.96
    $858.96 - $858.96
    $858.96
    $685.00
    $685.00 - $685.00
    $685.00
    Sold out
  • 22278201 Genuine Volvo Def Level Sensor For Adblue Tank 70 L - ADVANCED TRUCK PARTS
    22278201 Genuine Volvo Def Level Sensor For Adblue Tank 70 L - ADVANCED TRUCK PARTS
    Sold out

    22278201 Genuine Volvo Def Level Sensor For Adblue Tank 70 L

    VOLVO
    $858.96
    $858.96 - $858.96
    $858.96
    $685.00
    $685.00 - $685.00
    $685.00
    Out of stock

    Description: Def Level Sensor For Adblue Tank 70 LCondition: New Brand: VolvoPart Number: 22278201Other Oem Part Numbers That Will Work: 22432646, ...

    View full details
    $858.96
    $858.96 - $858.96
    $858.96
    $685.00
    $685.00 - $685.00
    $685.00
    Sold out
  • 22432646 Genuine Volvo Def Level Sensor For Adblue Tank 70 L - ADVANCED TRUCK PARTS
    22432646 Genuine Volvo Def Level Sensor For Adblue Tank 70 L - ADVANCED TRUCK PARTS
    Sold out

    22432646 Genuine Volvo Def Level Sensor For Adblue Tank 70 L

    VOLVO
    $858.96
    $858.96 - $858.96
    $858.96
    $685.00
    $685.00 - $685.00
    $685.00
    Out of stock

    Description: Def Level Sensor For Adblue Tank 70 LCondition: New Brand: VolvoPart Number: 22432646Other Oem Part Numbers That Will Work: 22432646, ...

    View full details
    $858.96
    $858.96 - $858.96
    $858.96
    $685.00
    $685.00 - $685.00
    $685.00
    Sold out

  • 0434397000 Freightliner Def Header Quality Sensor Sending Unit

    FREIGHTLINER
    $3,005.00
    $3,005.00 - $3,005.00
    $3,005.00
    $1,399.00
    $1,399.00 - $1,399.00
    $1,399.00
    Low stock

    Description: Freightliner Def Header Quality Sensor Sending UnitCondition: New   Brand: Freightliner Part Number: 0434397000Other Oem Part Numbers ...

    View full details
    $3,005.00
    $3,005.00 - $3,005.00
    $3,005.00
    $1,399.00
    $1,399.00 - $1,399.00
    $1,399.00

  • 04-34397-000 Freightliner Def Header Quality Sensor Sending Unit

    FREIGHTLINER
    $3,005.00
    $3,005.00 - $3,005.00
    $3,005.00
    $1,399.00
    $1,399.00 - $1,399.00
    $1,399.00
    Low stock

    Description: Freightliner Def Header Quality Sensor Sending UnitCondition: New   Brand: Freightliner Part Number: 04-34397-000Other Oem Part Number...

    View full details
    $3,005.00
    $3,005.00 - $3,005.00
    $3,005.00
    $1,399.00
    $1,399.00 - $1,399.00
    $1,399.00

  • 0436002000 Freightliner Def Header Quality Sensor Sending Unit

    FREIGHTLINER
    $3,005.00
    $3,005.00 - $3,005.00
    $3,005.00
    $1,399.00
    $1,399.00 - $1,399.00
    $1,399.00
    Low stock

    Description: Freightliner Def Header Quality Sensor Sending UnitCondition: New   Brand: Freightliner Part Number: 0436002000Other Oem Part Numbers ...

    View full details
    $3,005.00
    $3,005.00 - $3,005.00
    $3,005.00
    $1,399.00
    $1,399.00 - $1,399.00
    $1,399.00

  • 04-36002-000 Freightliner Def Header Quality Sensor Sending Unit

    FREIGHTLINER
    $3,005.00
    $3,005.00 - $3,005.00
    $3,005.00
    $1,399.00
    $1,399.00 - $1,399.00
    $1,399.00
    Low stock

    Description: Freightliner Def Header Quality Sensor Sending UnitCondition: New   Brand: Freightliner Part Number: 04-36002-000Other Oem Part Number...

    View full details
    $3,005.00
    $3,005.00 - $3,005.00
    $3,005.00
    $1,399.00
    $1,399.00 - $1,399.00
    $1,399.00

  • 043192-000 Freightliner Def Header Quality Sensor Sending Unit

    FREIGHTLINER
    $3,005.00
    $3,005.00 - $3,005.00
    $3,005.00
    $1,399.00
    $1,399.00 - $1,399.00
    $1,399.00
    Low stock

    Description: Freightliner Def Header Quality Sensor Sending UnitCondition: New   Brand: Freightliner Part Number: 043192-000Other Oem Part Numbers ...

    View full details
    $3,005.00
    $3,005.00 - $3,005.00
    $3,005.00
    $1,399.00
    $1,399.00 - $1,399.00
    $1,399.00

  • 0431921000 Freightliner Def Header Quality Sensor Sending Unit

    FREIGHTLINER
    $3,005.00
    $3,005.00 - $3,005.00
    $3,005.00
    $1,399.00
    $1,399.00 - $1,399.00
    $1,399.00
    Low stock

    Description: Freightliner Def Header Quality Sensor Sending UnitCondition: New   Brand: Freightliner Part Number: 0431921000Other Oem Part Numbers ...

    View full details
    $3,005.00
    $3,005.00 - $3,005.00
    $3,005.00
    $1,399.00
    $1,399.00 - $1,399.00
    $1,399.00

  • 04-31921-000 Freightliner Def Header Quality Sensor Sending Unit

    FREIGHTLINER
    $3,005.00
    $3,005.00 - $3,005.00
    $3,005.00
    $1,399.00
    $1,399.00 - $1,399.00
    $1,399.00
    Low stock

    Description: Freightliner Def Header Quality Sensor Sending UnitCondition: New   Brand: Freightliner Part Number: 04-31921-000Other Oem Part Number...

    View full details
    $3,005.00
    $3,005.00 - $3,005.00
    $3,005.00
    $1,399.00
    $1,399.00 - $1,399.00
    $1,399.00

  • 0435164000 Freightliner Def Header Quality Sensor Sending Unit

    FREIGHTLINER
    $3,005.00
    $3,005.00 - $3,005.00
    $3,005.00
    $1,399.00
    $1,399.00 - $1,399.00
    $1,399.00
    Low stock

    Description: Freightliner Def Header Quality Sensor Sending UnitCondition: New   Brand: Freightliner Part Number: 0435164000Other Oem Part Numbers ...

    View full details
    $3,005.00
    $3,005.00 - $3,005.00
    $3,005.00
    $1,399.00
    $1,399.00 - $1,399.00
    $1,399.00
  • 0431349001 Genuine Freightliner DEF Quality Level Sensor 13 Gal - ADVANCED TRUCK PARTS
    0431349001 Genuine Freightliner DEF Quality Level Sensor 13 Gal - ADVANCED TRUCK PARTS

    0431349001 Genuine Freightliner DEF Quality Level Sensor 13 Gal

    FREIGHTLINER
    $1,499.00 - $1,499.00
    $1,499.00
    $1,499.00 - $1,499.00
    $1,499.00
    Low stock

    Description: DEF Quality Level Sensor 13 GalCondition: NewBrand: FreightlinerPart Number: 0431349001Other OEM Part Numbers That Will Work: 04-31349...

    View full details
    $1,499.00 - $1,499.00
    $1,499.00
    $1,499.00 - $1,499.00
    $1,499.00
  • Q21-6173-002 Genuine Paccar DEF Quality Sensor - ADVANCED TRUCK PARTS
    Q21-6173-002 Genuine Paccar DEF Quality Sensor - ADVANCED TRUCK PARTS

    Q21-6173-002 Genuine Paccar DEF Quality Sensor

    PACCAR
    $324.00 - $324.00
    $324.00
    $324.00 - $324.00
    $324.00
    Low stock

    Description: DEF Quality Sensor (No Core Charge)Condition: NewBrand: Paccar Part Number: Q21-6173-002 Other OEM Part Numbers That Will Work: Q21-61...

    View full details
    $324.00 - $324.00
    $324.00
    $324.00 - $324.00
    $324.00

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