4157846C91 | Genuine International® / Navistar® DEF Header, 7 Gallon Tank, QLS 1% SSI

SKU: 4157846C91 MPN: 4157846C91

Take full control of your truck’s emissions with the Genuine International / Navistar DEF Header. Part number: 4157846C91. Condition: new. QLS 1% SSI technology delivers precise readings for your 7-gallon tank.

$799.00
No Core Charge
8 in stock, ready to ship

Pickup available at Warehouse - Howard st 7092 ste F

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: 4157846C91

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Product Description

Product Name Diesel Exhaust Fluid (DEF) Header Product Name Diesel Exhaust Fluid (DEF) Header
Condition New Condition New
Brand International® / Navistar® Brand International® / Navistar®
Part Number 4157846C91 Part Number 4157846C91
Inetrchange Part Number 2515989C1 Inetrchange Part Number 2515989C1
Specifications
Sensor Type QLS 1% SSI Sensor Type QLS 1% SSI
Tank Capacity 7 Gallon Tank Capacity 7 Gallon
Electrical Connector Deutsch DT4 (STD) Electrical Connector Deutsch DT4 (STD)
Sensor Type Digital (canbus) Sensor Type Digital (canbus)
DEF Header Height (IN) 18 DEF Header Height (IN) 18
DEF Suction Fitting Dia. (IN) 3/8 SAE J2044 DEF Suction Fitting Dia. (IN) 3/8 SAE J2044
DEF Return Fitting Dia. (IN) 5/16 SAE J2044 DEF Return Fitting Dia. (IN) 5/16 SAE J2044
Coolant Inlet Fitting Dia. (IN) 5/8 Hose Bead Coolant Inlet Fitting Dia. (IN) 5/8 Hose Bead
Coolant Outlet Fitting Dia. (IN) 5/8 Hose Bead Coolant Outlet Fitting Dia. (IN) 5/8 Hose Bead
In-Tank Filter 40µ In-Tank Filter 40µ
Tank Interface 6 Bolt Tank Interface 6 Bolt

Useful Information

Description and Purpose:

This DEF Header is a Genuine International / Navistar part, identified by Part number: 4157846C91, and comes in new condition. Designed for 7-gallon DEF tanks, it monitors QLS 1% SSI levels accurately, ensuring your SCR system receives the right fluid information at all times. Installing this new sensor helps maintain proper emissions monitoring and keeps your heavy-duty truck running smoothly without unexpected alerts. Interchange Part Number: 2515989C1

Why Replacement is Important:

A worn or malfunctioning DEF sensor can trigger false readings, SCR warnings, or engine derates. Prompt replacement helps avoid downtime and protects the emissions system.

Impact on Vehicle Performance:

Reliable DEF sensing ensures correct fluid dosing, supporting efficient engine operation and preventing performance issues under load.

Manufacturer Information:

International® delivers durable vehicles engineered to meet the demands of regional, long-haul, and vocational applications.

Navistar® designs heavy-duty vehicles and components to deliver reliability, fuel efficiency, and long-lasting service.

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: 4157846C91