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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.

  • Original price $3,245.00
    Original price $3,245.00 - Original price $3,245.00
    Original price $3,245.00
    Current price $1,699.00
    $1,699.00 - $1,699.00
    Current price $1,699.00

    90035845 | Genuine Kalmar Ottawa Multipurpose Head Unit Def Quality Sensor

    OTTAWA KALMAR
    Low stock

    Description: DEF quality sensor, multipurpose head unitCondition: NewBrand: Kalmar OttawaPart Number: 90035845Other Part Numbers That Will Work: OW...

    View full details
    Original price $3,245.00
    Original price $3,245.00 - Original price $3,245.00
    Original price $3,245.00
    Current price $1,699.00
    $1,699.00 - $1,699.00
    Current price $1,699.00
  • Original price $575.00
    Original price $575.00 - Original price $575.00
    Original price $575.00
    Current price $250.00
    $250.00 - $250.00
    Current price $250.00

    Q21-6167-001K1T | Genuine Paccar Def Quality Sensor

    PACCAR
    Out of stock

    Description: DEF Quality Sensor For Peterbilt Kenworth Paccar Condition: New Brand: Paccar Part Number: Q21-6167-001K1T Other OEM Part Numbers That...

    View full details
    Original price $575.00
    Original price $575.00 - Original price $575.00
    Original price $575.00
    Current price $250.00
    $250.00 - $250.00
    Current price $250.00
    Sold out
  • Original price $1,599.00 - Original price $1,599.00
    Original price
    $1,599.00
    $1,599.00 - $1,599.00
    Current price $1,599.00

    4163699C91 | Genuine International Qls Fls Def Sensor Gal 15.5, 16, 23

    INTERNATIONAL
    Low stock

    Description: Qls Fls Def Sensor Gal 15.5, 16, 23Condition: NewBrand: International Part Number: 4163699C91

    Original price $1,599.00 - Original price $1,599.00
    Original price
    $1,599.00
    $1,599.00 - $1,599.00
    Current price $1,599.00
  • Original price $985.00
    Original price $985.00 - Original price $985.00
    Original price $985.00
    Current price $499.00
    $499.00 - $499.00
    Current price $499.00

    Q21-6170-003K1T, Q21-6167-003K1T 1T | Genuine Paccar® Def Quality Sensor

    PACCAR
    Low stock

    Description: Def Quality Q21-6170-003k1t ( Free Over Night Shipping )Condition: New Brand: PaccarPart Number Q21-6127-006k1t The Same As Q21-6170-0...

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    Original price $985.00
    Original price $985.00 - Original price $985.00
    Original price $985.00
    Current price $499.00
    $499.00 - $499.00
    Current price $499.00
  • Original price $899.00 - Original price $899.00
    Original price
    $899.00
    $899.00 - $899.00
    Current price $899.00

    4097725C91 | Genuine International® Def Tank Qls Ssi Sensor For Navistar

    INTERNATIONAL
    Low stock

    Description: Def Tank Qls Ssi Sensor For Navistar Condition: New Brand: International Part Number: 4097725C91  Navistar®

    Original price $899.00 - Original price $899.00
    Original price
    $899.00
    $899.00 - $899.00
    Current price $899.00
  • Original price $639.00 - Original price $639.00
    Original price
    $639.00
    $639.00 - $639.00
    Current price $639.00

    4097728C91 | Genuine International® Def Sensor 10.6, 15.9 For Navistar

    INTERNATIONAL
    Low stock

    Description: Def Sensor 10.6/15.9/25.2g, For Navistar Condition: New Brand: InternationalPart Number: 4097728C91

    Original price $639.00 - Original price $639.00
    Original price
    $639.00
    $639.00 - $639.00
    Current price $639.00
  • Original price $899.00 - Original price $899.00
    Original price
    $899.00
    $899.00 - $899.00
    Current price $899.00

    4097727C91 | Genuine International® Def Tank Sensor For Navistar

    INTERNATIONAL
    Low stock

    Description: Def Tank Sensor For NavistarCondition: NewBrand: InternationalPart Number: 4097727C91 Navistar®

    Original price $899.00 - Original price $899.00
    Original price
    $899.00
    $899.00 - $899.00
    Current price $899.00
  • Original price $699.00 - Original price $699.00
    Original price
    $699.00
    $699.00 - $699.00
    Current price $699.00

    2515990C3 | Genuine International® Def Quality Sensor For Navistar

    INTERNATIONAL
    Out of stock

    Description: Def Quality Sensor For Navistar    Condition: New Brand: International Part Number: 2515990c3Navistar®

    Original price $699.00 - Original price $699.00
    Original price
    $699.00
    $699.00 - $699.00
    Current price $699.00
    Sold out
  • Original price $1,699.00
    Original price $1,699.00 - Original price $1,699.00
    Original price $1,699.00
    Current price $699.00
    $699.00 - $699.00
    Current price $699.00

    4097722C91 | Genuine Navistar International 7 Gallon Def Tank Qls 1% Ssi Sensor Head Unit

    INTERNATIONAL
    Low stock

    Description: 7 Gallon Def Tank Qls 1% Ssi Sensor Head UnitCondition: NewPart Number: 4097722C91Brand: Navistar InternationalNavistar®

    Original price $1,699.00
    Original price $1,699.00 - Original price $1,699.00
    Original price $1,699.00
    Current price $699.00
    $699.00 - $699.00
    Current price $699.00
  • Original price $1,699.00
    Original price $1,699.00 - Original price $1,699.00
    Original price $1,699.00
    Current price $699.00
    $699.00 - $699.00
    Current price $699.00

    4157846C91 | Genuine Navistar International Def Tank Qls Sensor Head Unit

    INTERNATIONAL
    Low stock

    Description: 7 Gallon DEF Tank QLS 1% SSI Sensor Head Unit Condition: New Brand: Navistar International Part Number: 4157846C91 Navistar®

    Original price $1,699.00
    Original price $1,699.00 - Original price $1,699.00
    Original price $1,699.00
    Current price $699.00
    $699.00 - $699.00
    Current price $699.00
  • Original price $899.00 - Original price $899.00
    Original price
    $899.00
    $899.00 - $899.00
    Current price $899.00

    4163695C91 | Genuine Navistar International® 15 Gallon Def Tank Qls 1% Ssi Sensor Head Unit

    INTERNATIONAL
    Low stock

    Description: 15 Gallon DEF Tank QLS 1% SSI Sensor Head Unit Condition: New Brand: Navistar International Part Number: 4163695C91 Navistar®

    Original price $899.00 - Original price $899.00
    Original price
    $899.00
    $899.00 - $899.00
    Current price $899.00
  • Original price $999.00
    Original price $999.00 - Original price $999.00
    Original price $999.00
    Current price $399.00
    $399.00 - $399.00
    Current price $399.00

    Q21-6167-002K1T, Q21-6170-002K1T | Remanufactured Oem Paccar Def Quality Sensor

    PACCAR
    Low stock

    Description: Def Quality Sensor For Peterbilt Kenworth Paccar Condition: Remanufactured Brand: Paccar Part Number: Q21-6170-002k1t Other Oem Part N...

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    Original price $999.00
    Original price $999.00 - Original price $999.00
    Original price $999.00
    Current price $399.00
    $399.00 - $399.00
    Current price $399.00
  • Original price $999.00
    Original price $999.00 - Original price $999.00
    Original price $999.00
    Current price $399.00
    $399.00 - $399.00
    Current price $399.00

    Q21-6167-002K1T, Q21-6170-002K1T | Oem Paccar® New Def Quality Sensor

    PACCAR
    Low stock

    Description: Def Quality Sensor For Peterbilt Kenworth PaccarCondition: NewBrand: PaccarPart Number: Q21-6170-002k1t, Q21-6127-002K1T Other Oem Par...

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    Original price $999.00
    Original price $999.00 - Original price $999.00
    Original price $999.00
    Current price $399.00
    $399.00 - $399.00
    Current price $399.00
  • Original price $599.00 - Original price $599.00
    Original price
    $599.00
    $599.00 - $599.00
    Current price $599.00

    23539923 | Genuine Mack Def Level Sensor

    MACK
    Low stock

    Description: DEF Level Sensor (No Core Charge)Condition: NewBrand: Mack Part Number: 23539923 Other OEM Part Numbers That Will Work: 22306793, 2304...

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    Original price $599.00 - Original price $599.00
    Original price
    $599.00
    $599.00 - $599.00
    Current price $599.00
  • Original price $639.00 - Original price $639.00
    Original price
    $639.00
    $639.00 - $639.00
    Current price $639.00

    4140918C91 | Genuine Navistar International 10.6/15.9/25 Gallon Def Tank Qls Sensor Head Unit

    INTERNATIONAL
    Low stock

    Description: SENSOR, QLS, 25.2 GALLON DEF TANKCondition: NewPart Number: 4140918C91 Brand: Navistar InternationalNavistar®

    Original price $639.00 - Original price $639.00
    Original price
    $639.00
    $639.00 - $639.00
    Current price $639.00
  • Original price $699.00 - Original price $699.00
    Original price
    $699.00
    $699.00 - $699.00
    Current price $699.00

    5012176R91 | Genuine Navistar International 5 Gallon Def Tank Qls Sensor Head Unit

    INTERNATIONAL
    Low stock

    Description: 5 Gallon Def Tank Qls Sensor Head Unit Condition: New Part Number: 5012176R91  Brand: Navistar InternationalNavistar®

    Original price $699.00 - Original price $699.00
    Original price
    $699.00
    $699.00 - $699.00
    Current price $699.00
  • Original price $2,449.00
    Original price $2,449.00 - Original price $2,449.00
    Original price $2,449.00
    Current price $1,299.00
    $1,299.00 - $1,299.00
    Current price $1,299.00

    2515899C1 | Genuine International® Def Tank Level Sensor 5-Gal

    INTERNATIONAL
    Low stock

    Description: Def Tank Level Sensor 5-Gal   Condition: New  Brand: InternationalPart Number: 2515899C1  Other OEM Part Numbers That Will Work: 25166...

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    Original price $2,449.00
    Original price $2,449.00 - Original price $2,449.00
    Original price $2,449.00
    Current price $1,299.00
    $1,299.00 - $1,299.00
    Current price $1,299.00
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    Original price
    $1,299.00
    $1,299.00 - $1,299.00
    Current price $1,299.00

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

    INTERNATIONAL
    Low stock

    Description: Sensor, 9.5 Gallon, With Cover Condition: New Brand: Navistar International Part Number: 4254201C91  Navistar®

    Original price $1,299.00 - Original price $1,299.00
    Original price
    $1,299.00
    $1,299.00 - $1,299.00
    Current price $1,299.00
  • Original price $699.00 - Original price $699.00
    Original price
    $699.00
    $699.00 - $699.00
    Current price $699.00

    5012173R91 | Genuine International Quality Level Sensor Qls 12 Gal

    INTERNATIONAL
    Low stock

    Description: Quality Level Sensor QLS 12 GalCondition: NewBrand: International Part Number: 5012173R91

    Original price $699.00 - Original price $699.00
    Original price
    $699.00
    $699.00 - $699.00
    Current price $699.00
  • Original price $999.00
    Original price $999.00 - Original price $999.00
    Original price $999.00
    Current price $699.00
    $699.00 - $699.00
    Current price $699.00

    2515984C3 | Genuine International® 9.5 Gal Def Sensor For Navistar

    INTERNATIONAL
    Low stock

    Description: 9.5 Gal Def Sensor For Navistar     Condition: New  Brand: International Part Number: 2515984C3 Navistar®

    Original price $999.00
    Original price $999.00 - Original price $999.00
    Original price $999.00
    Current price $699.00
    $699.00 - $699.00
    Current price $699.00
  • Original price $985.00
    Original price $985.00 - Original price $985.00
    Original price $985.00
    Current price $499.00
    $499.00 - $499.00
    Current price $499.00

    Q21-6167-003K1T | Paccar Def Quality Sensor Q21-6170-003K1T Q21-6127-006K1T

    PACCAR
    Low stock

    Description: Def Quality Sensor For Peterbilt Kenworth Paccar, Cleaned Inspected, Comes With New O-RingCondition: Re-ManufacturedBrand: PaccarPart ...

    View full details
    Original price $985.00
    Original price $985.00 - Original price $985.00
    Original price $985.00
    Current price $499.00
    $499.00 - $499.00
    Current price $499.00
  • Original price $2,449.00
    Original price $2,449.00 - Original price $2,449.00
    Original price $2,449.00
    Current price $1,299.00
    $1,299.00 - $1,299.00
    Current price $1,299.00

    DC4Z5J250E | Genuine Ford Def Tank Level Sensor 5-Gal

    FORD
    Low stock

    Description: Def Tank Level Sensor 5-Gal   Condition: New  Brand: FordPart Number: DC4Z5J250E  Other OEM Part Numbers That Will Work: 2515899C1, 25...

    View full details
    Original price $2,449.00
    Original price $2,449.00 - Original price $2,449.00
    Original price $2,449.00
    Current price $1,299.00
    $1,299.00 - $1,299.00
    Current price $1,299.00
  • Original price $575.00
    Original price $575.00 - Original price $575.00
    Original price $575.00
    Current price $250.00
    $250.00 - $250.00
    Current price $250.00

    Q21-6170-001K1T | Genuine Paccar Def Quality Sensor

    PACCAR
    Out of stock

    Description: DEF Quality Sensor For Peterbilt Kenworth Paccar Condition: New Brand: Paccar Part Number: Q21-6170-001K1T Other OEM Part Numbers That...

    View full details
    Original price $575.00
    Original price $575.00 - Original price $575.00
    Original price $575.00
    Current price $250.00
    $250.00 - $250.00
    Current price $250.00
    Sold out
  • Original price $2,399.00 - Original price $2,399.00
    Original price
    $2,399.00
    $2,399.00 - $2,399.00
    Current price $2,399.00

    Dm501-2206A765 | Genuine Spartan Motorhome Def Head Level Sensor For 10 Gallon

    ADVANCED TRUCK PARTS
    Out of stock

    Description: Def Head Level Sensor For 10 Gallon Tank Condition: NewBrand: Spartan Part Number: DM501-2206A765

    Original price $2,399.00 - Original price $2,399.00
    Original price
    $2,399.00
    $2,399.00 - $2,399.00
    Current price $2,399.00
    Sold out

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