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Yuchai Engine Truck Spare Parts YC4G Cylinder Head Cover Gasket G0100-1003001-085 for YUTONG Bus Parts

The G0100-1003001-085 Cylinder Head Gasket is an original equipment (OE) high-performance head gasket engineered specifically for Yuchai YC4G series (e.g., YC4G180) and YC4112ZQ turbocharged diesel engines. As a core component of the engine’s combustion system, it ensures reliable sealing between the cylinder block and cylinder head, preventing catastrophic leaks of combustion gases, coolant, and engine oil under extreme thermal and mechanical loads.

Designed to withstand high cylinder pressures from turbocharging and long-term exposure to temperature cycling, this gasket uses multi-layer steel (MLS) or reinforced metal composite construction with precision-cut apertures for cylinders, water jackets, and oil passages. It maintains structural integrity and elastic recovery over thousands of heat cycles—critical for maintaining compression ratio, cooling efficiency, and lubrication stability.

Used across Yutong, Zhongtong buses, and medium-duty trucks, this head gasket plays a vital role in ensuring engine reliability, emissions compliance, and fuel economy.
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  • G0100-1003001-085

  • Yutong Bus Parts

Attribute Description
Part Number (OE) G0100-1003001-085
Product Name Cylinder Head Gasket / Engine Head Gasket
Common Names Head Bed, Head Seal, Combustion Gasket
Application Engine Yuchai YC4G Series (e.g., YC4G180), YC4112ZQ Turbo Diesel
Engine Type 4-Cylinder Inline, Turbocharged Direct Injection
Material Type Multi-Layer Steel (MLS) or Reinforced Metal Composite
Sealing Design Laser-welded outer ring; elastomer-filled inner layers
Function Seals:
• Combustion Chamber
• Coolant Passages
• Oil Galleries
Design Standard Meets GB/T 19055, ISO 7882, and Yuchai OE specifications
气缸盖罩垫片-1


气缸盖罩垫片-1


Parameter Specification
Maximum Combustion Pressure Withstands >150 bar peak pressure
Temperature Resistance -40°C to +250°C (continuous operation); transient spikes up to 300°C
Cylinder Bore Diameter Matches YC4G engine — typically ~105 mm
Coolant & Oil Port Sealing Integrated fire rings and rubber sealing beads
Elastic Recovery Rate ≥90% after prolonged compression
Surface Finish Requirement Block and head surfaces must be flat within 0.05 mm per 100 mm
Torque Retention Maintains clamping force through thermal expansion cycles
Service Life Designed for full engine life — but only if installed correctly and not overheated


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