2515990C2 | Genuine OEM International/Navistar 5-Gal DEF Tank QLS Head 11"

The 2515990C2 DEF Tank QLS Head is a genuine OEM International/Navistar component described for compatible 5-gallon diesel exhaust fluid (DEF) tank systems. This unit is specified as an 11-inch QLS head for DEF system monitoring. Verify the original part number, tank capacity, and sensor configuration before ordering.

PRODUCT INFORMATION

Part Number: 2515990C2
Brand: International / Navistar
Condition: Genuine OEM — confirm the item's actual condition with the seller
Component: DEF Tank QLS Head
Tank Capacity: 5 Gallons
Head Length: 11 Inches
System: Diesel Exhaust Fluid (DEF) / SCR Aftertreatment System

APPLICATIONS

Designed for compatible International/Navistar vehicles equipped with the matching 5-gallon DEF tank and 11-inch QLS head configuration. Exact vehicle models, engine applications, and production years should be verified before purchase.

FUNCTION

The DEF tank QLS head supports DEF system monitoring. Depending on the specific configuration, the sensor assembly provides information about fluid level and quality to the vehicle's emissions aftertreatment system.

SIGNS OF A FAULTY DEF TANK QLS HEAD

• Incorrect DEF level readings

• DEF quality warnings

• DEF system or aftertreatment warning lights

• Fault codes related to DEF sensor operation

• Inconsistent DEF level readings

• Emissions system performance warnings

These symptoms may also be caused by wiring, connectors, contaminated DEF, or other aftertreatment components. Proper diagnosis is recommended before replacement.

WHY REPLACE THE DEF TANK QLS HEAD?

A damaged or malfunctioning sensor head may provide inaccurate DEF readings or interfere with normal system monitoring. Replacing a confirmed faulty unit with the correct compatible component can help restore proper DEF system operation.

FITMENT INFORMATION

Part Number: 2515990C2
Brand: International / Navistar
Component: DEF Tank QLS Head
Tank Capacity: 5 Gallons
Head Length: 11 Inches

Confirm the part number, tank capacity, head length, connector, and sensor configuration against the original unit before purchase. If you are unsure whether this part is correct for your vehicle, please contact us with your VIN and original part number. We are happy to help verify compatibility before purchase.

GENUINE INTERNATIONAL / NAVISTAR PART

Part Number: 2515990C2