4132618C1 | Genuine OEM International/Navistar Diesel Exhaust Fluid DEF Doser Pump

The 4132618C1 Genuine OEM International/Navistar Diesel Exhaust Fluid (DEF) Doser Pump is a component of the diesel exhaust aftertreatment system in compatible heavy-duty truck applications. It supports the delivery of DEF to the selective catalytic reduction (SCR) system to help control nitrogen oxide emissions.

PRODUCT INFORMATION

• Part Number: 4132618C1
• Brand: International / Navistar
• Condition: Genuine OEM — confirm the item's actual condition with the seller
• Component: Diesel Exhaust Fluid (DEF) Doser Pump
• System: Diesel Exhaust Aftertreatment
• Related System: Selective Catalytic Reduction (SCR)
• Vehicle Type: Compatible heavy-duty diesel trucks

APPLICATIONS

Designed for compatible International/Navistar diesel truck applications equipped with the corresponding DEF and SCR aftertreatment system. Exact fitment depends on vehicle model, model year, engine, emissions configuration, and original equipment specifications.

FUNCTION

The DEF doser pump helps supply diesel exhaust fluid to the SCR dosing system. Proper DEF delivery is necessary for the aftertreatment system to operate as intended and support emissions reduction.

SIGNS OF A FAULTY DEF DOSER PUMP

A failing pump or related system issue may be associated with:

• DEF or SCR warning lights
• Diagnostic trouble codes related to DEF pressure or dosing
• Emissions system warnings
• DEF dosing or delivery faults
• Reduced engine power or an inducement warning, where supported by the vehicle system
• Failed aftertreatment system tests

These symptoms may also be caused by contaminated DEF, clogged lines, electrical faults, sensors, or other aftertreatment components. Proper diagnosis is recommended before replacing the pump.

WHY REPLACE THE DEF DOSER PUMP?

Replacing a confirmed faulty DEF doser pump with the correct part can help restore proper DEF delivery and aftertreatment system operation. Check for related faults and follow the vehicle manufacturer's installation and service procedures.

FITMENT INFORMATION

Verify that part number 4132618C1 matches the original component and your vehicle's aftertreatment configuration before ordering. Compatibility may vary by model, year, engine, emissions system, and calibration.

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: 4132618C1