Product Overview

This premium connecting rod is engineered as a direct replacement for the Yanmar 3D78 diesel engine. Designed for durability and precise performance, it is a critical component for maintaining engine integrity and power output in heavy-duty applications. We specialize in supplying high-quality engine parts to a global B2B market, including distributors, workshops, and heavy machinery operators across North America, Europe, the Middle East, and Asia-Pacific.

Key Features & Benefits

• Precision Engineered: Manufactured to exact OEM specifications (OEM Size) for a perfect fit and reliable operation within the Yanmar 3D78 engine assembly.
• Enhanced Durability: Constructed from high-grade materials to withstand the high-stress, high-torque environment of diesel engines, ensuring long service life.
• Optimal Engine Performance: Maintains correct piston stroke and bearing alignment, crucial for engine efficiency, fuel economy, and reducing harmful vibrations.
• Rigorous Quality Control: Each part undergoes stringent machinery tests and video outgoing-inspection to guarantee dimensional accuracy and material integrity before shipment.
• Cost-Effective Solution: Offers a reliable, high-performance alternative with a significant price advantage, reducing downtime and maintenance costs for your fleet.

Technical Specifications

OEM Cross-Reference

This connecting rod is manufactured as a direct replacement for the genuine Yanmar part. For precise cross-referencing, please verify with your engine serial number. Common OEM part numbers for the Yanmar 3D78 connecting rod assembly include (but are not limited to) sequences such as 129150-77010, 129150-77020, or similar. We recommend consulting the official Yanmar parts catalog for your specific engine variant.

Compatibility

Primary Application: Yanmar 3D78 Diesel Engine.

Vehicle & Machinery Applications: This engine is commonly found in a wide range of industrial and commercial equipment, including:

• Excavators
• Dump Trucks & Heavy-Duty Trucks
• Forklifts
• Bulldozers
• Buses & Coaches
• Wheel Loaders
• And other heavy machinery utilizing the Yanmar 3D78 power unit.

Global Supply & Distribution

We are a seasoned exporter with extensive experience in international logistics and trade compliance. Our supply chain is optimized for fast, reliable delivery to key global markets.

• Worldwide Shipping: We ship to all major destinations via air and sea freight.
• Major Markets Served: We regularly supply partners in North America (USA, Canada, Mexico), the European Union, the United Kingdom, Australia, the Middle East (UAE, Saudi Arabia), Southeast Asia, and South America.
• Efficient Logistics: We ensure timely delivery to major industrial ports and logistics hubs, including Los Angeles, Rotterdam, Hamburg, Singapore, Dubai, and Sydney.
• Export Compliance: All documentation (commercial invoice, packing list, certificate of origin) is provided to ensure smooth customs clearance.

Quality Assurance

Our commitment to quality is integral to our manufacturing process, providing you with parts you can trust for critical engine rebuilds.

• Manufacturing Standards: Produced in ISO-certified facilities using advanced CNC machining and forging techniques for consistent quality.
• Comprehensive Warranty: Backed by a robust 6-month warranty against manufacturing defects, providing peace of mind for your business.
• Testing & Inspection: Every batch is subject to a detailed Machinery Test Report. Furthermore, a Video Outgoing-Inspection is provided upon request, allowing you to visually verify the part’s condition before it leaves our factory.

FAQ

Q1: Is this connecting rod sold as a single unit or as a set for the entire engine?
A1: This connecting rod is sold as a single item. For a complete engine rebuild, you will need to purchase one rod for each cylinder in your Yanmar 3D78 engine. Please check your engine configuration to determine the required quantity.

Q2: Does this part include the connecting rod bolts, bearings (big end and small end), or bushings?
A2: This listing is for the connecting rod itself. It typically does not include the bolts, nuts, bearings, or bushings. These are often sold separately due to specific torque requirements and wear patterns. We recommend always using new bolts and matched bearings during assembly. Please inquire if you require a full connecting rod assembly kit.

Q3: What precautions should be taken during installation to ensure proper engine function?
A3: Professional installation is critical. Always: 1) Clean all components thoroughly. 2) Measure the bore and pin diameters for correct bearing selection. 3) Use a precision torque wrench to tighten connecting rod bolts to the manufacturer’s specified torque and sequence. 4) Check the side clearance and ensure the rod moves freely on the crankshaft journal after installation. Improper installation can lead to catastrophic engine failure.

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 .