Quanchai QC4102ZG & QC4102ZY Diesel Engines

81kW & 76kW Turbocharged Power for Construction Machinery

The Quanchai QC4102 series is a mature and widely used 4-cylinder turbocharged diesel engine platform designed for Chinese construction machinery. Known for its strong torque output, mechanical simplicity, and cost-effective maintenance, the QC4102 engines remain a reliable power solution for global markets.

The two most common variants are:

• QC4102ZG – 81kW (110HP)
• QC4102ZY – 76kW (103HP)

Both engines comply with China Stage II emission standards and use a mechanical fuel injection pump system (non-electronic), making them especially suitable for markets that prefer simple and serviceable diesel engines.

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Model Code Meaning – QC4102ZG

• QC = Quanchai
• 4102 = 4 cylinders, 102mm bore
• Z = Turbocharged
• G = General engineering / industrial version
• Emission: China Stage II

The mechanical structure ensures easy diagnostics, affordable spare parts, and convenient field repair.

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QC4102ZG – 81kW Turbocharged Version

Model: QC4102ZG
Rated Power: 81kW (110HP) @ 2400rpm
Displacement: 3.856L
Fuel System: Mechanical injection pump
Cooling System: Water-cooled
Emission: China Stage II

Typical Applications

• Wheel loaders
• Rough terrain forklifts
• Backhoe loaders
• Self-loading concrete mixers
• Generator sets
• Fixed industrial power units

The 81kW version provides stronger torque output and is better suited for heavy-duty applications requiring continuous load performance.

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QC4102ZY – 76kW Loader-Specific Version

Model: QC4102ZY
Rated Power: 76kW (103HP) @ 2400rpm
Displacement: 3.856L
Fuel System: Mechanical injection pump
Emission: China Stage II

Key Feature

The “Y” version is specifically calibrated for wheel loader transmission matching. It delivers stable torque output optimized for loader working cycles.

QC4102ZG vs QC4102ZY – Technical Comparison

Item	QC4102ZY	QC4102ZG
Rated Power	76kW / 103HP	81kW / 110HP
Bore	102mm	102mm
Displacement	3.856L	3.856L
Turbocharged	Yes	Yes
Application Focus	Loader-specific	General engineering / industrial
Emission	China Stage II	China Stage II

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Application in 4WD Rough Terrain Forklifts

For 5 ton 4x4 rough terrain forklifts, the QC4102ZG 81kW version provides:

• Strong climbing performance
• Stable hydraulic system support
• Reliable torque at low RPM
• Easy maintenance in remote job sites
• Lower overall operating cost

Its mechanical injection system makes it highly suitable for construction sites, mining areas, and developing markets where electronic engines may be difficult to maintain.

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Spare Parts & Engine Supply

We supply:

• Complete QC4102ZG and QC4102ZY engines
• Engine overhaul kits
• Turbochargers
• Fuel pumps & injectors
• Pistons & piston ring sets
• Gasket kits
• Starter motors & alternators

For engine procurement or spare parts support, please contact us directly.