5012171R91 | Genuine International® / Navistar® DEF Sensor, 7 Gallon Tank, QLS 1% SSI

SKU: 5012171R91 MPN: 5012171R91

Stay ahead of emissions issues with the Genuine International / Navistar DEF Sensor. Condition: new. Part number: 5012171R91. Reliable 7-gallon DEF tank monitoring with QLS 1% SSI precision keeps your engine and SCR system protected.

$479.00
No Core Charge
3 in stock

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Contact us to check if overnight next-day delivery is available for your order - PN: 5012171R91

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Product Description

Product Name DEF Sensor Product Name DEF Sensor
Condition New Condition New
Brand International® / Navistar® Brand International® / Navistar®
Part Number 5012171R91 Part Number 5012171R91
Inetrchange Part Number 4254211C91 Inetrchange Part Number 4254211C91
Specifications
Sensor Type QLS 1% SSI Sensor Type QLS 1% SSI
Tank Capacity 7 Gallon Tank Capacity 7 Gallon

Useful Information

Description and Purpose:

This DEF Sensor from International / Navistar is a Genuine part with Part number: 5012171R91 and is new. It is designed for 7-gallon DEF tanks and precisely monitors QLS 1% SSI levels, keeping your SCR system informed and helping your heavy-duty truck maintain proper fluid management. Installing this new sensor ensures accurate readings and prevents unnecessary warnings or engine derates. Interchange part number: 4254211C91

Why Replacement is Important:

A faulty DEF sensor can cause incorrect readings, trigger dashboard warnings, or even limit engine performance. Replacing it promptly protects your emissions system and avoids downtime.

Impact on Vehicle Performance:

Accurate DEF sensing supports efficient SCR operation, stabilizes engine performance, and ensures reliable emissions management during all driving conditions.

Manufacturer Information:

International® combines advanced engineering with robust design to ensure uptime and dependable operation in all conditions.

Navistar® stands for durable engineering, providing trucks and powertrains built to handle demanding fleet applications.

Tags & Category: Diesel Exhaust Fluid Sensor, DEF QLS Sensor, International, Navistar, QLS 1% SSI, DEF Tank Sensor, 7 Gallon DEF Tank, DEF Quality Level Sensor, SCR System Sensor, Emissions Control Component, Heavy Duty Truck DEF Sensor

Warranty:

Parts Finder Q offers a 365-days warranty for all types of parts in any condition. The warranty applies exclusively to purchases made directly through our website (partsfinderq.com). Please note that purchases made through third-party platforms like eBay or Amazon are not covered by this warranty.

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  • Icon Truck, Fast Delivery
    Free shipping over $199 Place an order today and receive it on Mar 6
  • Clock Icon
    Orders placed before 7-PM EST will ship same business day
  • Location icon, warehouse pickup point.
    Pickup available usually ready in 24 hours
  • Need it fast? We offer overnight shipping

    Contact us to check if overnight next-day delivery is available for your order - PN: 5012171R91