Product Overview

This is a professional-grade Taiho Crank Main and Connecting Rod Bearing Set engineered for Caterpillar 320B excavator engines. Designed as a direct replacement for OEM components, this set ensures optimal engine performance and longevity. We specialize in global B2B supply, serving major markets across North America, Europe, Asia-Pacific, and the Middle East with reliable shipping and export compliance.

Key Features & Benefits

• Premium Durability: Manufactured from high-grade, lead-free aluminum alloy for superior wear resistance and load-bearing capacity under extreme conditions.
• Precision Engineering: Exact OEM dimensions and tolerances guarantee perfect fitment, reducing installation time and preventing engine damage.
• Enhanced Lubrication: Optimized oil groove design ensures consistent oil film distribution, minimizing friction and preventing premature bearing failure.
• Corrosion Protection: Advanced surface treatment provides excellent resistance to corrosion and cavitation, extending service life.
• Complete Set Solution: Includes all necessary main and connecting rod bearings for a full engine overhaul, ensuring compatibility and performance consistency.

Technical Specifications

OEM Cross-Reference

This Taiho bearing set is a direct replacement for the following OEM part numbers:

• Caterpillar®: MP131, RP131
• Taiho Original Numbers: MP131, RP131

Note: Always verify part numbers against your engine’s service manual or existing components before purchase.

Compatibility

This bearing set is specifically designed for the following applications:

• Machine Model: Caterpillar 320B Excavator
• Engine Models: Caterpillar 3054 / 3056 engines within the S4K and S6K series.
• Typical Model Years: Applicable to 320B excavators manufactured in the late 1990s to early 2000s. Compatibility should be confirmed via serial number.

Global Supply & Distribution

We are a trusted partner for heavy equipment parts distributors and repair workshops worldwide. Our logistics network ensures efficient delivery to key industrial hubs and ports.

• Worldwide Shipping: We export to all major continents via air and sea freight.
• Key Markets Served: North America (USA, Canada, Mexico), European Union, United Kingdom, Australia, Southeast Asia, Middle East, and South America.
• Fast Delivery: Consolidated shipments to major ports like Los Angeles, Rotterdam, Singapore, and Dubai. Express options available for urgent requirements.
• Export Expertise: All documentation (Commercial Invoice, Packing List, Certificate of Origin) is provided for smooth customs clearance in compliance with international trade regulations.

Quality Assurance

We supply only premium-quality components to meet the demands of the global heavy machinery industry.

• Manufacturing Standards: Produced in ISO-certified facilities using precision machining and strict quality control protocols.
• Material Certification: Materials are sourced from certified suppliers and meet or exceed original specifications for hardness, tensile strength, and thermal stability.
• Performance Testing: Bearings undergo rigorous testing for dimensional accuracy, surface finish, and fatigue resistance.
• Warranty: Backed by a standard warranty against manufacturing defects. Please contact us for specific warranty terms applicable to your region.

FAQ

Q1: Is this a complete set for a full engine rebuild?
A1: Yes, this is a complete bearing set that includes both the crank main bearings and the connecting rod bearings required for a standard overhaul of the compatible S4K/S6K engine. Always verify the required quantity and sizes for your specific engine serial number.

Q2: How do I confirm this is the correct STD size for my engine?
A2: The “STD” designation indicates standard size for an engine with unworn crankshaft journals. Before installation, it is critical to measure your crankshaft journals with a micrometer. If the journals are worn beyond specification, an undersize bearing may be required. Consult the engine service manual for precise tolerances.

Q3: What are the storage and handling recommendations for these bearings?
A3: To preserve the bearing surface, store in the original packaging in a clean, dry environment. Avoid exposure to moisture and contaminants. Handle with clean hands or gloves to prevent corrosion from skin oils. Always apply a clean engine assembly lubricant during installation.

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 .