Komatsu 4D95 Piston Ring Set 6204-31-2200 6204-31-2203 for Excavator Engine Parts

Product Details

Product Overview

This high-quality piston ring set is engineered specifically for Komatsu 4D95 diesel engines, offering a direct replacement solution for maintaining optimal engine compression and oil control. The set includes part numbers 6204-31-2200 and 6204-31-2203, which are critical OEM reference numbers for Komatsu heavy equipment.

Designed for demanding applications in construction and material handling machinery, this piston ring set is suitable for use in excavators, forklifts, bulldozers, loaders, trucks, and buses powered by the Komatsu 4D95 engine platform. Each ring is manufactured to OEM size specifications, ensuring proper fitment and reliable performance in rebuilt or replacement engine assemblies.

Whether you are a workshop performing engine overhauls or a parts distributor stocking essential engine components, this piston ring set provides the dimensional accuracy and material quality needed for long service life in heavy-duty diesel applications.

Key Features & Benefits

• OEM Reference Accuracy: Directly matches Komatsu part numbers 6204-31-2200 and 6204-31-2203, simplifying parts identification and cross-referencing.
• Precision Engineering: Manufactured to OEM size tolerances for proper ring-to-groove fitment and optimal cylinder wall contact.
• Durable Material Composition: Constructed from high-grade cast iron or steel alloys designed to withstand high combustion pressures and temperatures in diesel engines.
• Complete Set Configuration: Includes all necessary compression rings and oil rings for a full piston ring replacement on 4D95 engines.
• Versatile Application: Compatible with multiple equipment types including excavators, forklifts, loaders, bulldozers, trucks, and buses, reducing inventory complexity.
• Enhanced Engine Performance: Restores compression, reduces blow-by, and improves oil control, contributing to better fuel efficiency and lower emissions.
• Cost-Effective Solution: Offers a reliable aftermarket alternative to genuine OEM parts without compromising on quality or fitment.

Technical Specifications

OEM Cross-Reference

This piston ring set is designed as a direct replacement for the following original Komatsu part numbers:

• 6204-31-2200 – Primary OEM Piston Ring Set Number
• 6204-31-2203 – Alternative OEM Piston Ring Set Number

These numbers correspond to the standard piston ring configuration used in Komatsu 4D95 series engines. Always verify your existing part number against these references before ordering to ensure compatibility with your specific engine serial number.

Compatibility

This piston ring set is commonly used for the following applications:

• Engine Platform: Komatsu 4D95 diesel engine (naturally aspirated and turbocharged variants)
• Equipment Types:
  • Excavators (e.g., Komatsu PC series with 4D95 engine)
  • Forklifts (e.g., Komatsu FD series)
  • Bulldozers (e.g., Komatsu D31 series)
  • Wheel Loaders (e.g., Komatsu WA series)
  • Trucks and Buses (Komatsu chassis with 4D95 engine)

Note: Fitment is inferred based on engine model compatibility. We recommend consulting your equipment’s service manual or existing piston ring part number to confirm exact application.

Global Supply & Distribution

We maintain a robust global supply chain capable of shipping to major industrial markets worldwide. Our logistics network supports fast delivery to ports and inland destinations across:

• North America: Regular shipments to USA (Los Angeles, Houston, New York), Canada (Vancouver, Toronto), and Mexico
• Europe: Direct delivery to Rotterdam, Hamburg, Antwerp, and major European industrial centers
• Asia-Pacific: Rapid delivery to Japan, South Korea, Australia, Indonesia, Thailand, and Vietnam
• Middle East & Africa: Serving UAE, Saudi Arabia, South Africa, Nigeria, and Kenya
• South America: Regular exports to Brazil, Chile, Peru, and Argentina

We have extensive experience in international trade documentation, customs clearance, and export compliance. Air freight and express courier options are available for urgent orders to minimize equipment downtime.

Quality Assurance

Every piston ring set undergoes rigorous quality control procedures to ensure it meets or exceeds OEM performance standards:

• Manufacturing Standards: Produced in ISO-certified facilities with strict dimensional control and material composition verification.
• Testing: Each batch is subject to hardness testing, tensile strength analysis, and surface finish inspection. Video outgoing inspection reports are available upon request.
• Warranty: Backed by a 6-month warranty against manufacturing defects. Any issues related to material or workmanship will be addressed promptly.
• Traceability: Each set is packed with clear labeling including part numbers, production batch codes, and inspection stamps for full traceability.

FAQ

Q1: How do I confirm that this piston ring set fits my specific Komatsu 4D95 engine?
A: Verify the current piston ring part number on your engine against our OEM cross-reference numbers (6204-31-2200 or 6204-31-2203). If your engine uses these numbers, the set is compatible. We also recommend checking the engine serial number and consulting your service manual for any updates to piston ring specifications for your specific engine variant.

Q2: What is the recommended installation procedure for these piston rings?
A: Installation should be performed by a qualified diesel mechanic following standard piston ring fitting procedures. Key steps include: (1) Cleaning ring grooves thoroughly, (2) Checking ring end gap in the cylinder bore, (3) Staggering ring gaps at 120-degree intervals, (4) Using a proper ring compressor during piston installation. Always lubricate rings and cylinder walls with clean engine oil during assembly.

Q3: How should I store unused piston ring sets to maintain their quality?
A: Store the rings in their original packaging in a clean, dry environment away from direct sunlight and extreme temperatures. Keep the plastic bag sealed to prevent dust or moisture contamination. If rings are removed from packaging for inspection, handle them carefully to avoid bending or scratching the ring faces. Proper storage ensures the rings remain within specification for future use.