1J751-2111 +0.5mm Enlarged Piston for Kubota V3307 diesel engine
The 1J751-2111 +0.5 enlarged diesel engine piston assembly is a large-sized piston part used in engine repair and overhaul operations, primarily suitable for the assembly needs of engines whose cylinders have been bored and repaired. Compared to standard pistons, this product has a 0.5mm larger cylinder bore, effectively restoring cylinder sealing and compression performance, ensuring stable engine output after repair. The piston body is made of high-temperature resistant aluminum alloy, suitable for the high-temperature, high-load operating environment of diesel engines.
| Part Number |
1J751-2111 |
| Type |
Piston |
| Enlarged Size |
+0.5 mm |
| Function |
Restores cylinder compression and transmits combustion power. |
| Material |
High-temperature resistant aluminum alloy |
| Applicable Objects |
Diesel engines after cylinder boring repair |
Features and Advantages
• +0.5mm enlarged piston design, suitable for assembly in engines after cylinder boring repair.
• High piston dimensional accuracy, improving cylinder sealing and compression efficiency.
• High-temperature resistant alloy material, suitable for long-term diesel engine operation.






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.