Finding the right engine internal components for your V2203 equipment is crucial for ensuring long-term reliability and compression efficiency. When you are sourcing 1G780-21113 pistons (also searched as 1G78021113) or the corresponding 1A091-21050 ring sets, you need a supplier that understands precise technical specifications for diesel engine maintenance.
This V2203 rebuild kit is designed as a direct OEM standard replacement. Whether you are operating skid steers, excavators, or tractors, these parts meet the rigorous thermal demands of the V2203 direct injection engine series.
| Engine Model | Bore Diameter (mm) | Piston Part Number | Piston Ring Part Number | Piston Pin Dimension |
|---|---|---|---|---|
| V2203 / V2203-M | 87.00 mm | 1G780-21113 (1G78021113) | 1A091-21050 (1A09121050) | 25*64 mm |
| V2203 / V2203-T | 87.00 mm | 19077-21112 (1907721112) | 17331-21050 (1733121050) | 25*64 mm |
| V2203-DI | 87.00 mm | 1G796-21112 (1G79621112) | 16790-21053 (1679021053) | 25*64 mm |
| V2203 Series | 87.00 mm | 16641-2111 (166412111) | 17331-21050 (1733121050) | 25*64 mm |
| Model NO. | V2203 Diesel Engine Series | Part Number: | 1G780-21113 / 1A091-21050 |
| Product Name: | Piston and Ring Kit (Liner Kit) | Type: | Aftermarket Rebuild Components |
| Condition: | Brand New, OEM Standard | MOQ: | 1 Piece |
| Payment Terms: | T/T, Western Union, MoneyGram | Stock Status: | In Stock / Fast Dispatch |
| Delivery: | DHL, Fedex, EMS, UPS, Air/Sea | Application: | Overhaul, Engine Maintenance |
| Technical Point | Our OEM-Standard Parts | Cheap Generic Parts |
|---|---|---|
| Material Composition | High-silicon aluminum alloy for heat resistance | Standard scrap aluminum (prone to expansion) |
| Ring Groove Coating | Hard anodized or Alfin insert available | No reinforcement (causes rapid wear) |
| Piston Ring Seal | Precision chrome-plated or nitride finish | Rough machining (causes oil consumption) |
| Pin Fitment | Micron-level tolerance for 25*64 pins | Loose fitment (causes engine knocking) |
| Service Life | Matches original maintenance cycles | High risk of failure under 500 hours |
| Compatibility | Guaranteed for 1G780-21113 applications | Vague part number matching |
Get instant quotes and availability for Kubota V2203 parts. Click below to connect with our parts specialists:
Q: How can I identify if my engine requires part 1G780-21113 or 1G796-21112?
A: It depends on whether your V2203 is an Indirect Injection (IDI) or Direct Injection (DI) model. Checking the piston crown shape is essential. The 1G780-21113 is common in standard V2203 models, while the 1G796-21112 is specific to DI configurations. We recommend sharing your engine serial number for verification.
Q: What causes premature wear on the 1A091-21050 piston rings?
A: Poor filtration leading to abrasive dust intake and overheating are the primary causes. Using OEM-standard tri-metal rings ensures better heat dissipation and sealing against the liner wall.
Q: Why Choose This Piston and Ring Kit?
A: Our kits feature an OEM-standard tri-metal structure and are trusted by repair shops and equipment fleets globally for their exact fit and durability in heavy-duty construction environments.
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