Komatsu 6D155 Piston Ring Set 6128-31-2070 | High-Quality Engine Replacement Part

Product Details

Product Overview

This is a premium-quality piston ring set, specifically engineered for the Komatsu 6D155 diesel engine. The set includes the top ring, second ring, and oil ring, all manufactured to meet or exceed OEM specifications. Sourced from a leading ISO-certified manufacturer, this component is essential for maintaining compression, reducing oil consumption, and ensuring optimal engine performance. We offer global shipping to major industrial centers across North America, Europe, Asia-Pacific, the Middle East, and Africa, ensuring fast and reliable delivery for your workshop or heavy equipment fleet.

Key Features & Benefits

• Superior Durability: Constructed from high-strength ductile iron and chrome-plated steel for exceptional wear resistance and extended service life.
• Optimized Performance: Precision-engineered profiles ensure a perfect seal, maximizing compression, reducing blow-by, and lowering oil consumption.
• Heat Resistance: Designed to withstand the extreme temperatures and pressures within the combustion chamber without deformation.
• Direct Fitment: Manufactured to exact OEM dimensions (Part No. 6128-31-2070) for a hassle-free installation with no modifications required.
• Cost-Effective Solution: Provides genuine-quality performance at a competitive price point, ideal for both overhauls and preventative maintenance.

Technical Specifications

OEM Cross-Reference

This piston ring set is a direct replacement for the following OEM part numbers:

• Komatsu OEM: 6128-31-2070
• Alternative Reference: 6128-31-2060 (Check compatibility)

Note: Always verify the original part number on your existing ring set before ordering.

Compatibility

• Engine Model: Komatsu 6D155
• Vehicle/Equipment Applications: Commonly used in Komatsu bulldozers (e.g., D65, D85 series), excavators, and other heavy machinery equipped with the 6D155 engine.
• Year Range: Fits various model years; please confirm your engine serial number for exact compatibility.

Global Supply & Distribution

We are a dedicated supplier of heavy-duty engine components, serving a global client base. Our logistics network ensures efficient shipping to:

• North America: Major ports (Los Angeles, Houston, New York) and inland industrial hubs.
• Europe: Rotterdam, Hamburg, Antwerp, and key distribution centers.
• Asia-Pacific: Singapore, Shanghai, Dubai, and major Australian cities.
• Middle East & Africa: Dubai, Jeddah, and major mining regions.

We handle all export documentation and offer various shipping options (DHL, FedEx, Sea Freight) to meet your delivery deadlines.

Quality Assurance

• Manufacturing Standard: ISO 9001:2015 certified production facility.
• Testing: 100% inspection for dimensional accuracy, material hardness, and surface finish before packaging.
• Warranty: 12-month warranty against manufacturing defects.
• Compliance: All products meet or exceed SAE and DIN standards for engine components.

FAQ

Q1: Is the 6128-31-2070 ring set compatible with the Komatsu S6D155 engine?

Yes, this part number (6128-31-2070) is specifically designed for the Komatsu 6D155 engine family, which often includes the S6D155 variant. However, we always recommend checking the engine serial number and comparing the old ring dimensions (thickness and width) to ensure a perfect fit.

Q2: Do I need to replace the piston rings and cylinder liners together?

For optimal performance and longevity, it is highly recommended to replace the piston rings in conjunction with new cylinder liners. Reusing worn liners with new rings can lead to poor sealing and accelerated ring wear. If the liners are still within specification, a light hone of the cylinder wall is required before installing new rings.

Q3: What is the recommended installation procedure for these rings?

Installation should follow the standard Komatsu service manual. Key steps include: 1) Lubricate the rings and cylinder bore with clean engine oil. 2) Use a piston ring compressor to compress the rings evenly. 3) Ensure ring gaps are staggered (typically 120° apart) and do not align with the piston pin bore. 4) Ensure the oil ring expander ends do not overlap. Improper installation can cause ring breakage or engine failure.