Excavator KX91-3 parts 1G770-2110 83mm piston assembly for Kubota D1503/V2403
The 1G770-2110 piston is a core power component of the Kubota D1503 series diesel engine. It converts the energy of fuel in the combustion chamber into mechanical power, driving the connecting rod to rotate the crankshaft and achieve power output. This piston has a standard outer diameter of 83mm and is precision-manufactured from a high-heat-resistant aluminum-silicon alloy. It is wear-resistant, high-temperature resistant, and can maintain stable operation under prolonged high-pressure combustion conditions.
| Part Number |
1G770-2110 |
| Type |
Piston |
| Outer Diameter |
83 mm |
| Height |
66/80 mm |
| Pin Hole Diameter |
25 mm |
| Pin Diameter |
24.95 mm |
| Pin Length |
64 mm |
| Material |
Aluminum-Silicon Alloy |
| Components |
Piston body, piston pin, retaining ring |
| Function |
Converts combustion energy into mechanical power to drive the connecting rod rotation. |
| Typical Applications |
Power equipment such as mini excavators, tractors, generators, and agricultural machinery. |
Features and Advantages
• Standard Size Design: Conforms to original equipment manufacturer (OEM) specifications, ensuring high installation compatibility.
• High Heat-Resistant Aluminum-Silicon Alloy Material: High temperature resistance, wear resistance, and extended service life.
• Precision Machining: Precise dimensions, tight fit with cylinder block and piston rings.
• Improved Engine Performance: Restores compression ratio, increases power output, reduces smoke and fuel consumption.
• Widely Applicable to: Kubota D1503 / V2003 series engines and related power equipment.






Frequently Asked Questions
Q1: What is your main products?
A1: We are specialized in the excavator engine spare parts, for example Main cylinder block, cylinder head, crankshaft, Engine assembly, piston, cylinder liner, piston ring, camshaft, connecting rod, oil pump, water pump, valve series products, movement, etc. almost all parts of the entire engine.
Q2: Do you test all products before shipping?
A2: Yes, we conduct 100% testing before shipping.
Q3: Which engine models is this Piston compatible with?
A3: This product is designed for specific diesel engine models. If you can provide the engine model or original part number, we can confirm compatibility before shipping to avoid incompatibility issues.
Q4: Can you provide cross-reference information for OEM part numbers?
A4: Yes, we support original part interchange. Please provide the original part number, and we will verify the replacement part accordingly.
Q5: What should I do if there is a problem with the product?
A5: Our products undergo professional testing and are of very stable quality. If you do find any problems, please contact us. We have a professional after-sales team to help you solve the problem.
Why Choose Us?
• Over 20 years of experience specializing in construction machinery, engines, and parts – with stable experience supplying mainstream brands and models.
• Extensive experience in model matching enables us to provide customers with accurate parts selection, reducing procurement risks.
• A long-term, stable, and reliable supply system ensures reliable product sourcing and meets continuous procurement needs.
• For product information or quotations, our professional team will provide you with detailed answers immediately upon receiving your request.