4076442 4010173 JR4076442 High Pressure Fuel Injection Pump for QSC8.3 Diesel Engine Construction Machinery

The JISION 4076442 / 4010173 / JR4076442 High Pressure Fuel Injection Pump is designed for compatible QSC8.3 diesel engine applications used in excavators and other heavy-duty construction machinery.

As a critical component of the diesel fuel system, the high-pressure fuel pump supplies pressurized fuel to the injection system according to engine operating requirements. Stable fuel delivery is essential for efficient combustion, smooth engine operation and dependable power output.

Featuring a heavy-duty housing, precision fuel-control components, electrical connections and accurately machined mounting surfaces, this QSC8.3 fuel injection pump is suitable for engine repair, fuel-system maintenance and replacement of worn or malfunctioning pump assemblies.

Key Features

• Part Numbers 4076442 / 4010173 / JR4076442 – Multiple reference numbers for convenient parts identification.
• For QSC8.3 Engine – Designed for compatible QSC8.3 diesel engine configurations.
• High-Pressure Fuel Delivery – Provides pressurized fuel for compatible diesel injection systems.
• Stable Performance – Helps maintain consistent fuel delivery under changing engine loads.
• Precision Components – Accurately manufactured internal components support reliable pump operation.
• Heavy-Duty Construction – Robust housing suitable for demanding construction machinery environments.
• Integrated Control Components – Designed to work with compatible engine fuel-management systems.
• Replacement Solution – Suitable for fuel-system repair, engine maintenance and overhaul projects.

Product Specifications

Main Function

The 4076442 high-pressure fuel pump is responsible for supplying fuel at the pressure required by the compatible QSC8.3 engine injection system.

Proper fuel-pump operation helps support:

Stable Fuel Pressure • Efficient Combustion • Smooth Engine Operation • Reliable Power Output • Consistent Heavy-Duty Performance

A worn or malfunctioning fuel injection pump may contribute to symptoms such as:

• Difficult engine starting
• Low or unstable fuel pressure
• Reduced engine power
• Rough or unstable operation
• Poor acceleration
• Excessive exhaust smoke
• Fuel-system fault codes
• Engine starting and shutdown abnormalities

Replacing a faulty pump with a correctly matched 4076442 / 4010173 / JR4076442 fuel injection pump can help restore normal fuel-system operation.

Compatible Applications

Designed for compatible:

QSC8.3 Diesel Engine • Excavators • Construction Machinery • Heavy Equipment • Diesel Engine Fuel Systems • Engine Repair & Overhaul

Actual compatibility can vary according to the engine CPL, equipment model and serial number. Before ordering, please verify the 4076442 / 4010173 / JR4076442 part number, QSC8.3 engine specification, machine model and original pump configuration.

Why Choose JISION?

JISION specializes in supplying high-pressure fuel pumps, fuel injection pumps, diesel injectors, turbochargers and construction machinery engine parts for global aftermarket customers.

We support machinery dealers, engine repair workshops, parts distributors and equipment owners with professional parts matching, wholesale supply and worldwide shipping.

For accurate compatibility confirmation, please provide:

Part Number + Engine Model + Engine Serial Number/CPL + Machine Model + Original Fuel Pump Nameplate & Photos

Our team can help verify the correct pump before shipment.

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