Product Overview

This premium Main Bearing and Connecting Rod Bearing set is engineered for the Komatsu 6D155 diesel engine, a powerhouse in heavy-duty industrial and construction machinery. As a leading global supplier, we provide direct-from-factory quality with reliable worldwide shipping to major markets including North America, Europe, the Middle East, and Asia-Pacific. This critical component set ensures your Komatsu equipment maintains optimal performance and longevity.

Key Features & Benefits

• Precision Engineered: Manufactured to exact OEM specifications and tolerances for a perfect fit and reliable operation.
• Enhanced Durability: Constructed from high-grade materials designed to withstand extreme pressures and temperatures within the 6D155 engine.
• Optimal Oil Film Retention: Surface finish and design promote excellent lubrication flow, reducing friction and preventing premature wear.
• Vibration & Noise Reduction: Properly fitted bearings minimize engine vibration and operational noise for smoother performance.
• Complete Set Solution: Provides all necessary main and rod bearings for a comprehensive engine rebuild or repair.

Technical Specifications

OEM Cross-Reference

This bearing set directly replaces the following Komatsu OEM part numbers:

• 6127-21-8071
• 6127-29-8071
• 6127-39-3042
• 6127-39-3041

Ensure compatibility by verifying your engine’s model and existing part numbers.

Compatibility

Primary Engine Application:

• Komatsu 6D155 Diesel Engine

Typical Vehicle & Machinery Applications:

• Komatsu Excavators, Loaders, and Bulldozers
• Heavy-Duty Trucks and Buses
• Industrial Forklifts
• Other machinery powered by the Komatsu 6D155 engine platform.

Global Supply & Distribution

We specialize in the international export of high-quality engine components. Our streamlined logistics ensure efficient delivery to key industrial regions worldwide.

• Worldwide Shipping: Reliable sea and air freight to all major continents.
• Major Markets Served: Extensive experience supplying to North America (USA, Canada, Mexico), Europe (Germany, UK, Poland, Italy), Asia-Pacific (Australia, Japan, Singapore), the Middle East (UAE, Saudi Arabia), and South America.
• Fast Port Delivery: Expedited shipping to major global ports including Los Angeles, Rotterdam, Hamburg, Singapore, and Dubai.
• Export Compliance: All shipments are prepared with complete and accurate commercial documentation (Packing List, Commercial Invoice, Certificate of Origin) for smooth customs clearance.

Quality Assurance

Our commitment to quality ensures you receive parts that meet the demanding standards of the heavy equipment industry.

• Manufacturing Standards: Produced in ISO-certified facilities using precision machining and quality-controlled materials.
• Warranty: Backed by a 6-month warranty against manufacturing defects.
• Testing & Inspection: Each batch undergoes rigorous quality checks. A Machinery Test Report is available, and Video Outgoing-Inspection can be provided upon request to verify product condition before shipment.

FAQ

Q: How do I confirm these bearings are the correct size for my 6D155 engine?
A: These bearings are manufactured to the OEM standard size. For critical rebuilds, it is always recommended to measure the engine crankshaft journals and bearing bores with precision tools to confirm the correct clearance before installation, even when using standard size bearings.

Q: Is this a complete set for all bearing positions in the engine?
A: Yes, this product is sold as a complete set that includes both the main bearings (which support the crankshaft in the engine block) and the connecting rod bearings (which connect the rods to the crankshaft) for the Komatsu 6D155 engine.

Q: What documentation is provided with the shipment for international buyers?
A> We provide full export documentation, including a Commercial Invoice, Packing List, and Certificate of Origin. The Machinery Test Report for the product batch is also available. This ensures full transparency and simplifies the import process for B2B customers.

Our advantages

1.An authorized wholesaler of Isuzu genuine parts, Hino genuine parts, Mitsubishi genuine parts and Mahle parts.

2. We are not only supply genuine parts, but also high quality OEM parts, which are made in China or made in Japan.

3. More than 10 years of experience in machinery parts, professional supply of diesel engine parts.

4. Fast delivery, the fastest can be shipped in one day ,more than 500,000 of different types parts in stock.

5. Scientific ERP system, easy and fast to locate the parts that customer needs.

6. Professional technician checks the parts before delivery, to make sure the parts are correct, usable and defect-free.

Exhibition

Packing&Shipping

1.  Our shipment is by air/sea/express (DHL/FEDEX/TNT/UPS/EMS).

2.  Once we get confirmation of payment, we will ship products in 2 days.

3.  Our packaging is standard export wooden box or others as your requirement.

4. We’ll check and test the products before shipping , and givethe pictures to our customers to confirm.

FAQ

Q1. What is your company major products?

A: Our main products are Liner kit, Piston, Rings, Liner, Gasket kit, Bearing, Injection pump, Nozzle, Water pump, Oil pump,Crankshaft, Turbocharger,Filter, etc.

Q2.What is the MOQ?

A: Normally we can supply any quantity if we have in stock.

Q3. What is your payment term ?

A: We accept Western Union, T/T, Paypal.

Q4. What is the packing ?

A: Carton or wooden case , If you want to put your logo on the packing , We will do it after get your authorization letter.

Q5. When can you deliver products after payment ?

A: By Express ,usually might take 3-4 days ;By Air , Usually take 7-9 days ; By Sea ,usually take 1-2 months .

Q6. What can you do to complete order perfectly ?

A: In the beginning , We will communicate with clients in details to understand what they need .

Before packing , We will check the products and send photos to clients .After confirmation ,

We will packing products well to avoid damage . Once we get tracking number ,

We will send it to customer and keep contact in with clients .