4140918C91 | Genuine International® / Navistar® Diesel Exhaust Fluid (DEF) Header 25" for 10.6—32G

SKU: 4140918C91 MPN: 4140918C91

Maximize heated DEF precision with the Genuine International / Navistar DEF Header. Part number: 4140918C91. Condition: new. A 25-inch sensor unit built for multiple tank sizes with secure 6-bolt mounting and full suction/return ports.

$479.00
No Core Charge
3 in stock

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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 4140918C91 Part Number 4140918C91
Specifications
Tank capacity 10.6, 10.8, 15.9, 19, 25.2, 32 Gallons Tank capacity 10.6, 10.8, 15.9, 19, 25.2, 32 Gallons
DEF Header Height (IN) 25 DEF Header Height (IN) 25
DEF Return Fitting Dia. (IN) 5/16 SAE J2044 DEF Return Fitting Dia. (IN) 5/16 SAE J2044
Coolant Outlet Fitting Dia. (IN) 5/8 Hose Bead Coolant Outlet Fitting Dia. (IN) 5/8 Hose Bead
Electrical Connector Deutsch DT4 (STD) Electrical Connector Deutsch DT4 (STD)
Sensor Type Digital (canbus) Sensor Type Digital (canbus)
DEF Suction Fitting Dia. (IN) 3/8 SAE J2044 DEF Suction Fitting Dia. (IN) 3/8 SAE J2044
Coolant Inlet Fitting Dia. (IN) 5/8 Hose Bead Coolant Inlet 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 New Genuine DEF Header from International / Navistar, supplied under Part number: 4140918C91, serves as the control point for DEF flow, temperature stability, and data monitoring inside 10.6–32 gallon tanks. A heated design using 5/8 Hose Bead coolant ports keeps fluid stable, while a 40µ in-tank screen filter blocks crystallized particles before they reach the pump. 

Why Replacement is Important:

A failing header disrupts data accuracy, causing false contamination alerts and unnecessary derates.

Impact on Vehicle Performance:

Proper header function keeps DEF clean, warm, and correctly reported, preventing torque loss tied to emission misreadings.

Manufacturer Information:

International® develops service-ready components engineered to withstand heavy-duty cycles, reducing downtime in fleet applications.

Navistar® manufactures genuine components built to maintain operational consistency across diverse commercial and vocational vehicle platforms.

Tags & Category: DEF Header, DEF Tank Head, Diesel Exhaust Fluid Header Module, DEF Sensor Head, DEF Quality Sensor, DEF Level Sensor, DEF Header 25 Inch, 3/8 SAE J2044 Suction, 5/16 SAE J2044 Return, 5/8 Hose Bead Coolant Ports, Coolant-Heated DEF Header, Deutsch DT4 Connector, Digital Canbus Sensor, 40 Micron DEF Filter, 6 Bolt Tank Interface, International DEF System, Navistar Emissions Component.

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: 4140918C91