
Product Overview
This professional-grade Crankshaft Main Bearing Kit is engineered for the robust Isuzu 6WG1T industrial engine, commonly powering heavy-duty excavators. As a leading global supplier of genuine and high-quality aftermarket engine components, we ensure this kit meets the exacting standards required for industrial and construction applications. We specialize in international B2B distribution, offering reliable shipping to major markets worldwide, including North America, Europe, Asia-Pacific, and the Middle East.
Key Features & Benefits
- Precision Engineering: Manufactured to exact OEM specifications for a perfect fit and optimal oil clearance, ensuring smooth crankshaft rotation and maximum engine longevity.
- Premium Material: Constructed from high-grade, wear-resistant alloy metals with advanced surface treatments for superior load-bearing capacity and resistance to fatigue under extreme operating conditions.
- Complete Kit Solution: Includes all necessary main bearings for a full engine rebuild, providing convenience and ensuring all components are matched for consistent performance.
- Enhanced Durability: Designed to withstand the high torque and vibrational stresses of industrial diesel engines, reducing the risk of premature failure and costly downtime.
- Optimal Performance: Maintains proper oil film strength and distribution, crucial for reducing friction, managing heat, and ensuring efficient power delivery from the 6WG1T engine.
Technical Specifications
| Specification | Detail |
|---|---|
| Primary Part Number | 8981518491 |
| Alternative Part Number | 8976067090 |
| Manufacturer Reference | 8-98151849-1 |
| Engine Model | Isuzu 6WG1T |
| Component Type | Crankshaft Main Bearing Set / Kit |
| Application | Industrial & Excavator Engine |
| Material | High-Strength Bearing Alloy (Steel-backed with overlay) |
OEM Cross-Reference
This high-quality bearing kit directly replaces the following OEM and aftermarket part numbers:
- Isuzu: 8981518491, 8976067090, 8-98151849-1
- Compatible with other industry-standard references for the Isuzu 6WG1T engine main bearings. Please confirm your specific engine serial number for absolute compatibility.
Compatibility
This main bearing kit is designed specifically for the Isuzu 6WG1T turbocharged diesel engine. This engine is predominantly found in:
- Primary Application: Heavy-duty excavators and other large construction machinery.
- Compatible Equipment: Various models of excavators from major manufacturers that utilize the Isuzu 6WG1T power plant. It is critical to verify the engine model stamp on your equipment before ordering.
Global Supply & Distribution
We are equipped to support your operations anywhere in the world. Our streamlined logistics network ensures efficient delivery to key industrial and port hubs across all continents.
- Worldwide Shipping: Reliable air and sea freight options to North America (USA, Canada, Mexico), Europe (EU, UK), Asia-Pacific (Australia, Singapore, Japan), the Middle East (UAE, Saudi Arabia), and South America.
- Fast Delivery: Consolidated shipping to major ports like Los Angeles, Rotterdam, Singapore, and Jebel Ali for faster clearance and onward distribution.
- Export Expertise: Comprehensive experience in international B2B trade, including full commercial invoice, packing list, and certificate of origin documentation for smooth customs clearance.
- Trade Compliance: All shipments comply with international export regulations and standards.
Quality Assurance
We partner with ISO-certified manufacturers to guarantee component integrity and performance.
- Manufacturing Standards: Produced in facilities adhering to ISO 9001 quality management systems. Components meet or exceed original dimensional and material specifications.
- Rigorous Testing: Each bearing set undergoes stringent quality checks for dimensional accuracy, surface finish, and material hardness to ensure reliable performance under load.
- Warranty: Backed by a standard warranty against manufacturing defects. Please contact us for specific warranty terms applicable to your region.
FAQ
Q1: How do I confirm this bearing kit fits my specific Isuzu 6WG1T engine?
A1: The most reliable method is to cross-reference the part number stamped on your old bearings or from your engine’s service manual with the numbers listed in our OEM Cross-Reference section (8981518491, 8976067090). Always compare the engine model plate (6WG1T) and, if possible, the engine serial number.
Q2: What is included in this “kit,” and is it suitable for a complete engine overhaul?
A2: This is a complete main bearing set, containing all the upper and lower bearing shells required to replace the main bearings on the crankshaft of a 6WG1T engine. For a full overhaul, you will typically need additional kits such as connecting rod bearings, piston rings, gaskets, and seals.
Q3: What are the critical installation tips for these main bearings?
A3: Proper installation is vital. Always clean all journals and bearing seats meticulously. Use a plastigage to verify the specified oil clearance before final torque. Ensure the bearing shells are correctly seated and that oil holes align perfectly. Follow the manufacturer’s torque sequence and specification precisely, using a calibrated torque wrench. Always use fresh, clean engine oil for lubrication during assembly.
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 .