Komatsu PC300-6 6D108 Cylinder Liner 6222-21-2220 6222-23-2220 Engine Parts

Product Details

Product Overview

This high-quality cylinder liner is specifically engineered for the Komatsu PC300-6 excavator equipped with the 6D108 diesel engine. As a critical component of the engine block assembly, this liner provides the precise bore surface for piston operation. Our components are manufactured to strict ISO standards and are available for global shipping, serving major markets including North America, Europe, Southeast Asia, the Middle East, and Australia. This product offers a direct replacement solution for original Komatsu parts, ensuring a perfect fit and reliable performance.

Key Features & Benefits

• Premium Cast Iron Construction: Manufactured from high-grade alloy cast iron for exceptional wear resistance and long service life.
• Precision Machining: Bore surface is honed to a mirror-like finish for optimal piston ring sealing and reduced oil consumption.
• Dimensional Accuracy: Manufactured to OEM specifications with tight tolerances ensuring a perfect interference fit in the engine block.
• Enhanced Heat Dissipation: Designed with optimized wall thickness for efficient heat transfer, preventing hot spots and thermal distortion.
• Corrosion Resistance: Surface treatment provides protection against cavitation and corrosion from coolant and combustion byproducts.

Technical Specifications

OEM Cross-Reference

This cylinder liner directly replaces the following original Komatsu part numbers:

• Komatsu OEM: 6222-21-2220, 6222-23-2220
• Alternative Reference: 6222-21-2221 (Superseded), 6222-23-2221 (Superseded)

These numbers are direct cross-references. Please verify your existing part number before ordering to ensure compatibility.

Compatibility

• Primary Application: Komatsu PC300-6 Hydraulic Excavator
• Engine: Komatsu 6D108 Direct Injection Diesel Engine
• Other Compatible Models: May also fit Komatsu WA320-3 Wheel Loader, D65E-12 Bulldozer, and other equipment utilizing the 6D108 engine platform.

Always verify engine model and serial number for exact fitment.

Global Supply & Distribution

We offer comprehensive global logistics solutions to support your operations. Our distribution network ensures fast and reliable delivery to:

• North America: Major ports including Los Angeles, Houston, New York, and Vancouver.
• Europe: Key hubs such as Rotterdam, Hamburg, and Antwerp.
• Asia-Pacific: Direct shipping to Singapore, Shanghai, Dubai, and Sydney.
• Middle East & Africa: Service to Jebel Ali, Dammam, and Durban.

We handle all export documentation and customs clearance, ensuring a seamless international transaction. Bulk orders and drop-shipping arrangements are welcome.

Quality Assurance

Our cylinder liners are manufactured in ISO 9001:2015 certified facilities. Each unit undergoes rigorous quality control, including:

• Dimensional Inspection: 100% checked for bore diameter, wall thickness, and overall length using CMM equipment.
• Material Analysis: Spectrographic analysis to verify cast iron composition and hardness.
• Leak Testing: Pressure testing to ensure structural integrity.
• Visual Inspection: Final check for surface defects, porosity, or machining marks.

We offer a 12-month warranty against manufacturing defects from the date of purchase.

FAQ

Q1: Is this cylinder liner a direct replacement for the original Komatsu part?

Yes, this liner is manufactured to the exact OEM specifications (6222-21-2220 / 6222-23-2220). It is a direct drop-in replacement requiring no modifications. We recommend checking the part number on your existing liner to confirm compatibility.

Q2: What is the recommended installation procedure?

Installation should be performed by a qualified diesel mechanic. Key steps include: 1) Thoroughly clean the cylinder block bore. 2) Apply a thin layer of clean engine oil to the liner’s outer surface. 3) Use a proper liner installation tool to press the liner into place, ensuring it seats flush with the block deck. 4) After installation, measure the liner bore for roundness and taper. 5) Always use new piston rings and gaskets during reassembly.

Q3: What is the typical service life of this cylinder liner?

Under normal operating conditions with proper maintenance (regular oil changes, clean fuel, and proper coolant levels), this liner can provide 8,000 to 12,000 hours of service life. Factors such as engine load, operating environment, and maintenance schedule will affect longevity. We recommend replacing piston rings and bearings at the same time for optimal engine performance.