6D155 Main Bearing & Connecting Rod Bearing Set 6127-21-8071 6127-29-8071 6127-39-3042 6127-39-3041

Product Details

Product Overview

This comprehensive bearing set includes both main bearings and connecting rod bearings specifically designed for the Komatsu 6D155 diesel engine. The set comprises critical OEM reference numbers 6127-21-8071, 6127-29-8071, 6127-39-3042, and 6127-39-3041, ensuring precise identification for your engine rebuild or maintenance project.

Manufactured to OEM size specifications, this bearing set is a direct replacement for the original components in Komatsu 6D155 engines. As a critical part of the engine’s rotating assembly, these bearings provide the necessary clearance and oil film support for the crankshaft and connecting rods, directly impacting engine longevity and performance.

Please verify your engine model and existing part numbers against the specifications listed below to confirm compatibility before purchase. This product is commonly used in heavy equipment applications where reliable engine performance is non-negotiable.

Key Features & Benefits

• Precision Fitment: Manufactured to OEM size standards for the Komatsu 6D155 engine, ensuring correct clearance and oil flow for optimal bearing performance.
• Complete Set: Includes both main bearings and connecting rod bearings in one package, simplifying your parts ordering and inventory management.
• Verified Part Numbers: Cross-referenced against multiple OEM numbers (6127-21-8071, 6127-29-8071, 6127-39-3042, 6127-39-3041) for accurate part identification and ordering confidence.
• Durable Construction: Engineered for high-load diesel applications, providing reliable service in demanding conditions such as excavators, bulldozers, and loaders.
• Cost-Effective Solution: A high-quality aftermarket alternative to OEM parts, offering substantial savings without compromising on performance or reliability.
• Ready to Install: Supplied as a complete set, pre-sized to OEM specifications, reducing installation time and the need for additional modifications.

Technical Specifications

OEM Cross-Reference

This bearing set is a direct replacement for the following OEM part numbers. Use these numbers to verify compatibility with your existing engine components:

• Main Bearing: 6127-21-8071
• Connecting Rod Bearing: 6127-29-8071
• Additional Reference Numbers: 6127-39-3042, 6127-39-3041

Note: These numbers correspond to the specific bearing components in the Komatsu 6D155 engine. Always compare your existing part numbers with these references to ensure correct fitment.

Compatibility

This bearing set is specifically designed for the Komatsu 6D155 diesel engine. It is commonly used in the following equipment applications:

• Excavators
• Bulldozers
• Loaders
• Forklifts
• Trucks
• Buses
• Other heavy machinery using the 6D155 engine platform

Important: Fitment is inferred based on the engine model. Please verify your specific engine serial number and existing part numbers to confirm compatibility before ordering.

Global Supply & Distribution

We maintain a robust global supply chain to serve B2B customers worldwide. Our export capabilities ensure reliable delivery to major industrial centers across:

• North America: Serving the US and Canadian heavy equipment markets with fast shipping to major ports (Los Angeles, Houston, Vancouver).
• Europe: Regular shipments to EU countries via Rotterdam, Hamburg, and other key logistics hubs.
• Asia-Pacific: Direct distribution to Japan, South Korea, Australia, and Southeast Asian markets.
• Middle East & Africa: Serving mining and construction operations in the UAE, Saudi Arabia, South Africa, and beyond.
• South America: Regular exports to Brazil, Chile, and Argentina for mining and agricultural applications.

We have extensive experience in international trade documentation and customs compliance, ensuring smooth delivery for your procurement needs. Bulk orders and scheduled shipments are welcome for long-term supply agreements.

Quality Assurance

Each bearing set is manufactured under strict quality control procedures to meet international standards for diesel engine components. Our quality assurance process includes:

• Material Verification: Raw materials are tested for hardness, composition, and durability before production.
• Dimensional Inspection: All bearings are checked against OEM specifications for correct thickness, width, and curvature.
• Surface Finish Testing: Ensures proper oil retention and reduced friction characteristics.
• Outgoing Inspection: Video inspection reports are available upon request for quality verification.
• Warranty: Each product comes with a 6-month warranty against manufacturing defects.

We provide machinery test reports to support your quality assurance requirements. Our commitment to quality ensures reliable performance in demanding applications.

FAQ

Q: How do I confirm these bearings fit my Komatsu 6D155 engine?

A: Verify your existing bearing part numbers against the OEM references provided (6127-21-8071, 6127-29-8071, 6127-39-3042, 6127-39-3041). Also confirm your engine model is 6D155. If your engine has been previously rebuilt with oversized bearings, this standard-size set may not be appropriate. We recommend checking the existing bearing markings or consulting your engine service manual.

Q: What is included in this bearing set?

A: This set includes both main bearings (part number 6127-21-8071) and connecting rod bearings (part number 6127-29-8071) for the Komatsu 6D155 engine. Additional reference numbers 6127-39-3042 and 6127-39-3041 may correspond to specific bearing halves or shells within the set. The complete set weighs approximately 6 kg and is packed for secure transport.

Q: What installation precautions should I take?

A: Proper installation is critical for bearing longevity. Ensure the bearing surfaces and housing bores are clean and free of debris. Apply clean engine oil to bearing surfaces during assembly. Use a torque wrench to tighten connecting rod and main bearing caps to the manufacturer’s specifications. Never mix old and new bearings. After installation, prime the oil system before starting the engine to prevent dry start damage. We recommend professional installation by a qualified diesel mechanic.