2515900C1 by International® Multifunction DEF Head Unit With Sensor Skip to content
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2515900C1 | Genuine International® Multifunction DEF Head Unit With Sensor
International®

2515900C1 | Genuine International® Multifunction DEF Head Unit With Sensor

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Order within the next Jun 29 for delivery by Jul 02.
  • Product SKU: 2515900C1
  • Availability: In Stock
$1,245.00 - $1,245.00
$1,245.00
$1,245.00 - $1,245.00
$1,245.00
Hurry! only 5 left in stock!

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Description: Multifunction DEF Head Unit with Sensor 11", 40 Micron, Analog For Navistar/International, Ford F650 / F750
Condition: New
Brand: International®
Part Number: 2515900C1

Fitment Guide:

 Navistar/International, Ford F650 / F750


Specifications:

DEF Header Height (IN): 11
DEF Return Fitting Dia. (IN): 5/16 SAE J2044
Coolant Outlet Fitting Dia. (IN): 5/8 Hose Bead
Tank Interface: 4.05 Dia. Bore Seal
Electrical Connector: Delphi Metri-Pack 15 5-Pin (Jumper Harness)
Sensor Type: Analog
DEF Suction Fitting Dia. (IN): 3/8 SAE J2044
Coolant Inlet Fitting Dia. (IN): 5/8 Hose Bead
In-Tank Filter: 40µ


A Multifunction DEF Head (sometimes called a DEF header or DEF tank head) is a component mounted at the top of a diesel vehicle's Diesel Exhaust Fluid tank. It's a key part of the vehicle's emissions control system and combines several sensors and functions into a single assembly.

 
  • Monitoring DEF level
    • Measures how much DEF is available.
    • Warns the driver before the tank runs empty.
    • Helps prevent SCR system shutdown due to lack of DEF.
  • Monitoring DEF quality
    • Verifies that the fluid has the proper concentration (32.5% urea and 67.5% deionized water).
    • Detects contaminated, diluted, or incorrect fluid that could damage the SCR system or reduce emissions performance.
  • Monitoring DEF temperature
    • Detects when DEF is frozen or approaching its freezing point (about -11°C / 12°F).
    • Allows the vehicle to activate heaters so DEF can be used once thawed.
  • Supporting emissions compliance
    • Supplies data to the engine control module, which adjusts DEF dosing into the exhaust.
    • Helps the vehicle meet emissions regulations by ensuring the SCR system operates correctly.
  • Improving reliability and diagnostics
    • Provides continuous sensor data that can identify problems early.
    • Makes it easier for technicians to diagnose faults through diagnostic trouble codes (DTCs).


Signs of Faulty:

 
  • DEF warning light or message appears on the dashboard.
  • DEF level reads empty or very low even though you've recently filled the tank.
  • DEF level doesn't change after adding fluid.
  • "Poor DEF Quality" warning despite using fresh, certified DEF.
  • Check Engine Light (CEL) comes on.
  • Emissions system or SCR fault messages appear.
  • Engine derate (reduced power) to encourage repair of the emissions system.
  • Countdown to limited starts or no restart, depending on the vehicle manufacturer.
  • Intermittent warnings that come and go due to an internal electrical fault.

 

Manufacturer information
Navistar® is a proud manufacturer of some of the widely used trucks, yellow school buses, defense vehicles, and engines. It was recognized as the first truck and engine manufacturer to be certified by the EPA for meeting 2007 standards for hydrocarbons and particulate matter. But the company's global portfolio is not limited to its line of vehicles and engines—it also carries high-quality replacement parts and accessories to keep all these working in top condition at all times. From hose fuel, bolts, plugs, rivets, and bearings to flashers, incandescent lamps, camshaft brake, gasket injector, and spring door locks, Navistar has also got you covered.

Warranty
First Truck Parts offers a 365-days warranty for all types of parts and in any condition. The warranty applies only to buyers who have placed an order on our website.


Customer Reviews

Based on 7 reviews
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B
BREANN ARENDS

4378045, 5511560 | Genuine Cummins® Tank Def Header

P
Peter Ferguson
Freightliner DEF Head

Fast delivery, well packaged,good price.

N
Nika Keith
Great Product

Great item. As described. Great price!!

M
Mike Duty
Def Header

I received a new DEF Header for a Cummins engine. It works fine but the DEF fluid level does not work properly

R
Robert Ovalle
Great customer service.

Easy people to deal with part fit perfectly.

12