
Product Overview
This high-performance cylinder piston assembly is engineered for Kubota V2203 and V2403 series diesel engines. As a premier supplier to the global heavy equipment aftermarket, we ensure this critical component meets the rigorous demands of construction, agriculture, and industrial applications. We specialize in international B2B distribution, serving major markets across North America, Europe, the Asia-Pacific region, and the Middle East with reliable shipping and export compliance.
Key Features & Benefits
- Precision Engineering: Manufactured to exact OEM specifications for a perfect fit and optimal compression.
- Superior Durability: Constructed from high-grade aluminum alloy for excellent heat dissipation and resistance to wear under high-load conditions.
- Enhanced Performance: Designed to restore engine power, fuel efficiency, and reduce oil consumption in rebuilt engines.
- Complete Assembly: Includes the piston and wrist pin as a matched set, ensuring proper balance and simplifying the installation process.
- Rigorous Quality Control: Each component undergoes dimensional and material inspection to guarantee reliability and longevity.
Technical Specifications
| Specification | Detail |
|---|---|
| Primary Part Number | 1J803-21110 |
| Alternative Part Number | 1J803-2111 |
| Compatible Engine Models | Kubota V2203, Kubota V2403 |
| Component Type | Cylinder Piston with Wrist Pin |
| Primary Material | High-Strength Aluminum Alloy |
| Application | Diesel Engine Rebuild & Overhaul |
OEM Cross-Reference
This part is a direct replacement for the following OEM numbers:
- Kubota: 1J803-21110
- Kubota (Alternate): 1J803-2111
Always verify the part number from your original component or engine serial number before ordering.
Compatibility
This piston and pin assembly is designed for use in the following Kubota diesel engines, commonly found in a wide range of machinery:
- Engine Models: Kubota V2203, Kubota V2403
- Typical Applications: These engines power various Kubota excavators, compact track loaders, skid steers, and industrial generators.
- Vehicle/Equipment Examples: Found in models such as the Kubota KX series excavators and other compatible industrial equipment.
Global Supply & Distribution
We are a trusted partner for diesel engine parts distributors and heavy equipment repair shops worldwide. Our logistics network is optimized for efficient international trade.
- Worldwide Shipping: We export via air and sea freight to all major global markets.
- Key Regions Served: North America (USA, Canada, Mexico), European Union, United Kingdom, Australia, Southeast Asia, and the Middle East.
- Fast Delivery: Consolidated shipments to major ports and logistics hubs ensure timely delivery to your warehouse or facility.
- Export Expertise: All documentation, including commercial invoices, packing lists, and certificates of origin, is prepared for smooth customs clearance.
Quality Assurance
We stand behind the quality and performance of every part we supply.
- Manufacturing Standards: Components are produced using advanced casting and machining processes to meet or exceed original performance specifications.
- Inspection & Testing: Critical dimensions, weight, and material hardness are verified against master specifications.
- Warranty: Backed by a standard warranty against manufacturing defects. Please contact us for specific warranty terms applicable to your region.
FAQ
Q: Is this piston sold individually or as a full set?
A: This listing is for a single piston with its corresponding wrist pin. For a complete engine overhaul, the required quantity (e.g., 4 for a V2203) must be ordered separately to ensure balanced performance.
Q: Do I need to measure my cylinder bore before ordering this piston?
A: Yes. This part is designed to the standard OEM specification. During an engine rebuild, the cylinder liner or bore should be measured and machined/honed to the correct clearance for this piston. Always follow the engine service manual for proper clearance specifications.
Q: Are piston rings included with this assembly?
A: No. This product includes the piston and the wrist pin only. Piston rings are typically sold as a separate kit and must be ordered accordingly for a complete piston assembly.
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 .