
Product Overview
This is a premium replacement piston assembly designed for Yanmar 3D80-1 and 3TNC80 series diesel engines. Engineered to meet or exceed OEM specifications, this kit is an essential component for professional engine overhauls and repairs. We supply this critical part globally, with significant demand from key industrial markets in North America, Europe, the Middle East, and the Asia-Pacific region, ensuring reliable performance for heavy machinery and commercial vehicles.
Key Features & Benefits
- Precision Manufacturing: Produced to exact OEM dimensions (OEM Size) for a perfect fit and optimal engine compression.
- Enhanced Durability: Manufactured from high-grade materials to withstand the high-pressure and thermal stresses of diesel operation, ensuring long service life.
- Complete Assembly: Includes the piston with a precisely matched 23mm piston pin for a ready-to-install solution.
- Performance Guarantee: Restores engine power, efficiency, and reliability, minimizing downtime for critical equipment.
- Cost-Effective Repair: Provides a high-quality, affordable alternative to genuine OEM parts without compromising on performance.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Type | Piston with Pin |
| Primary Part Number | 119812-22080 |
| Engine Model | Yanmar 3D80-1, 3TNC80, 3TNC80L |
| Engine Type | Diesel |
| Piston Pin Diameter | 23 mm |
| Weight (Approx.) | 2 kg |
| Manufacturing Standard | OEM Size & Specifications |
| Place of Origin | Guangdong, China |
OEM Cross-Reference
This piston kit directly replaces the following OEM part numbers:
- Yanmar: 119812-22080
- Yanmar: 121450-22011
- Yanmar: 121450-22010
It is a direct interchange for these part numbers, ensuring compatibility with your Yanmar engine.
Compatibility
Compatible Engine Models: Yanmar 3D80-1, 3TNC80, 3TNC80L diesel engines.
Vehicle & Machinery Application: This piston is used in a wide range of equipment powered by the above engine models, including but not limited to:
- Excavators
- Trucks
- Forklifts
- Bulldozers
- Buses
- Loaders
- And other industrial machinery
Global Supply & Distribution
We are a professional exporter of heavy-duty engine components with a robust international supply chain. We ship worldwide via air and sea freight, offering competitive FOB, CIF, and DDP terms.
- Major Markets Served: Our core markets include the United States, Canada, Germany, the UK, Australia, Japan, the UAE, and Saudi Arabia.
- Efficient Logistics: We ensure fast delivery to major global ports such as Los Angeles, Rotterdam, Singapore, and Jebel Ali, with reliable inland forwarding to industrial hubs.
- Export Expertise: All documentation (commercial invoice, packing list, certificate of origin) is professionally prepared for smooth customs clearance in your country.
Quality Assurance
- Manufacturing Standards: Components are manufactured in ISO-certified facilities using precision CNC machinery to ensure dimensional accuracy.
- Comprehensive Warranty: Backed by a 6-month warranty against manufacturing defects.
- Rigorous Testing: Every batch undergoes stringent quality checks. We provide a Machinery Test Report and Video Outgoing-Inspection upon request to verify product condition before shipment.
FAQ
Q: How can I confirm this piston will fit my specific Yanmar engine?
A: Confirm your engine’s model number is 3D80-1, 3TNC80, or 3TNC80L. Cross-reference your old piston’s part number with our listed OEM numbers (119812-22080, 121450-22011, 121450-22010). For absolute certainty, please provide your engine serial number when inquiring.
Q: Is the piston pin included, and does it require fitting?
A: Yes, this is a complete kit that includes the matched 23mm piston pin. The pin is supplied as a separate component for professional installation, allowing the technician to properly fit it to the connecting rod.
Q: What should I check during installation to ensure optimal performance?
A: Prior to installation, always measure the cylinder bore for wear and ensure it is within service limits. Check the piston-to-cylinder wall clearance as specified in the engine service manual. Ensure the piston ring end gaps are correctly set and that the pin is properly secured with the circlips.
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 .