
Product Overview
This is a premium replacement connecting rod designed for Yanmar industrial and machinery diesel engines. Engineered for durability and precise fitment, it is an essential component for engine rebuilds and repairs. We supply this critical part globally, with extensive experience serving key industrial markets across North America, Europe, the Asia-Pacific region, and the Middle East, ensuring reliable support for your machinery maintenance needs.
Key Features & Benefits
- Precision Engineered: Manufactured to exact OEM specifications for a perfect fit and optimal engine performance.
- High-Strength Material: Constructed from forged alloy steel for exceptional tensile strength and fatigue resistance under high-load conditions.
- Advanced Machining: Features precisely machined bearing bores and bolt holes to ensure proper alignment and smooth operation.
- Reliable Performance: Restores engine compression and power output, contributing to reduced oil consumption and lower emissions.
- Direct Replacement: Designed as a direct, bolt-on component, simplifying the repair process and minimizing downtime.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Type | Connecting Rod (Conrod) |
| Primary Part Number | 121450-23000 |
| Compatible Engine Series | Yanmar 3TNC, 3TNA, 3TNV, 3TNE, 3D Series |
| Material | Forged Alloy Steel |
| Application | Industrial Diesel Engines for Machinery |
OEM Cross-Reference
This connecting rod directly replaces the following OEM part numbers:
- 121450-23000 (Primary Reference)
- 721450-23100
- 719810-23100
It is also compatible with engines bearing the model designations: 3TNC80, 3TNC80L, 3TNA80, 3D82, 3TNV82, 3TNE82.
Compatibility
This connecting rod is designed for use in various Yanmar industrial diesel engines, commonly found in:
- Engine Models: Yanmar 3TNC80, 3TNC80L, 3TNA80, 3D82, 3TNV82, 3TNE82 and related variants.
- Typical Applications: Industrial generators, construction machinery (excavators, loaders), agricultural equipment, marine auxiliary engines, and pump sets.
- For precise application, always verify your engine’s model and serial number against the part numbers listed above.
Global Supply & Distribution
We are a trusted global supplier of heavy-duty engine components. Our logistics network ensures efficient delivery to major industrial hubs and ports worldwide.
- Worldwide Shipping: We export to all major continents, including North America (USA, Canada, Mexico), Europe (Germany, UK, Italy, Netherlands), Asia-Pacific (Australia, Japan, Singapore, Indonesia), and the Middle East (UAE, Saudi Arabia).
- Fast Delivery: Leveraging established freight partnerships, we ensure timely delivery to key logistical centers. Stock availability allows for prompt dispatch.
- Export Expertise: All documentation (commercial invoice, packing list, certificate of origin) is prepared professionally to ensure smooth customs clearance and compliance with international trade regulations.
Quality Assurance
Every connecting rod meets stringent quality control standards to guarantee reliability.
- Manufacturing Standard: Produced in ISO-certified facilities, adhering to strict dimensional and material specifications.
- Rigorous Testing: Components undergo material hardness testing, crack detection (Magnaflux or Zyglo), and dimensional verification.
- Warranty: Backed by a standard warranty against manufacturing defects. Specific warranty terms are provided with the commercial invoice.
FAQ
Q1: How do I confirm this connecting rod fits my specific Yanmar engine?
A1: The most reliable method is to match the part number stamped on your original connecting rod or listed in your engine’s official parts manual with the OEM numbers provided in the OEM Cross-Reference section above (121450-23000, 721450-23100, 719810-23100). Also, verify your engine’s model designation (e.g., 3TNC80).
Q2: Is this sold as a single rod or as a full set?
A2> This product is typically sold as a single connecting rod. For a complete engine overhaul, you will need to purchase one rod per cylinder. Please check the product listing details or contact our sales team to confirm the unit of sale for your order.
Q3: What other components should I replace during a connecting rod installation?
A3: For a reliable rebuild, it is highly recommended to also replace the corresponding connecting rod bolts (stretch bolts), bearing shells, and piston pin bushing. Always inspect the piston, piston rings, and crankshaft journal for wear. Using a matched set of new components ensures balanced operation and long engine life.
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 .