Kubota piston repair parts 16483-21112 Oversized 0.5mm for D1503 3-cylinder diesel engines
Piston assembly 16483-21112 +0.5mm is a key power transmission component designed specifically for the Kubota D1503 series diesel engine, used to convert fuel energy in the combustion chamber into mechanical power. +0.5mm indicates that this piston is an oversized specification, suitable for compensating for wear after cylinder block wear, ensuring compression ratio recovery and stable power output. The piston is precision-manufactured from high-strength aluminum alloy and is equipped with piston rings, piston pins, and retaining rings, making it resistant to high temperatures, high pressures, and wear.
| Part Number |
16483-21112 |
| Type |
Piston |
| Size |
+0.5mm (Oversized) |
| Function |
Provides stable fuel pressure and precise injection timing |
| Material |
High-strength aluminum alloy |
| Components |
Piston, piston pin, and retaining ring |
| Typical Applications |
Construction machinery, generators, agricultural machinery, etc. |
Features and Advantages
• Oversized Design +0.5mm: Compensates for cylinder wear, improves compression ratio and combustion efficiency
• High-Strength Material: Made of aluminum alloy, resistant to high temperature and pressure
• Restores Power Output: Improves engine performance, reduces smoke and fuel consumption
• Wide Compatibility: Suitable for Kubota D1503 series diesel engines






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.