S17H0E0042 | Genuine OEM Hino 24V Diesel Exhaust Fluid (DEF) Pump

The Hino Diesel Exhaust Fluid (DEF) Pump, part number S17H0E0042, is a 24V pump designed to deliver DEF within a compatible diesel exhaust aftertreatment system. It supports the Selective Catalytic Reduction (SCR) system, which uses DEF to help reduce nitrogen oxide emissions. Verify the part number, voltage, and vehicle configuration before ordering.

PRODUCT INFORMATION

• Part Number: S17H0E0042

• Brand: Hino

• Part Name: Diesel Exhaust Fluid (DEF) Pump

• Component Type: DEF Pump

• Voltage: 24V

• System: Selective Catalytic Reduction (SCR) / Exhaust Aftertreatment

• Cross Reference: S17H0-E0042

• Condition: Confirm the actual condition of the item before purchase.

APPLICATIONS

The Hino DEF pump is intended for compatible commercial vehicle applications using a 24V DEF delivery system. Exact vehicle and engine fitment for S17H0E0042 should be confirmed using the vehicle identification number (VIN), engine information, and the original pump part number.

Do not assume that similar-looking DEF pumps or related part numbers are interchangeable without confirmation.

FUNCTION

The DEF pump supplies and circulates Diesel Exhaust Fluid through the vehicle's aftertreatment system as required for SCR operation. Correct DEF delivery helps the emissions system operate as designed and supports the reduction of nitrogen oxide emissions.

COMMON SIGNS OF DEF PUMP FAILURE

A worn, damaged, or failing DEF pump may cause symptoms such as:

• DEF pump or SCR system fault codes.

• Dashboard emissions-system warning lights.

• Reduced engine power or an engine derate.

• DEF pressure or delivery faults.

• Irregular DEF supply or dosing-system operation.

• Failure of the aftertreatment system to complete normal operation.

These symptoms can have other causes, including clogged filters, damaged lines, faulty sensors, or wiring problems. Follow the manufacturer's diagnostic procedure before replacing the pump.

WHY REPLACE A HINO DEF PUMP?

A functioning DEF pump is important for proper fluid delivery to the SCR aftertreatment system. Replacing a confirmed faulty pump with the correct 24V component can help restore DEF supply and support normal emissions-system operation.

FITMENT INFORMATION

Before purchasing Hino S17H0E0042, verify the part number and 24V specification against the existing pump. Confirm compatibility using the vehicle VIN, engine model, connector arrangement, and applicable OEM parts catalog.

The alternate format S17H0-E0042 is listed as a cross-reference for this part. Confirm that it matches your specific application before ordering.

GENUINE HINO PART

This listing identifies the product as a Hino 24V Diesel Exhaust Fluid (DEF) Pump, part number S17H0E0042. Verify authenticity, condition, and included components against the actual item and its supporting documentation before publishing or purchasing.