Finding the exact V1903 engine rebuild parts is critical for preventing premature engine failure. If you are a mechanic or equipment owner looking for 16427-21113 (1642721113) pistons and 16427-21050 (1642721050) ring sets, sourcing OEM-standard components ensures your machinery returns to factory performance levels. We specialize in providing heavy-duty engine internals for Kubota V-Series engines, focusing on durability and thermal stability.
This table covers the essential technical data for your repair planning. Ensure the bore size and pin dimensions match your current engine block specifications before purchase.
| Engine Model | Cylinder Bore (mm) | Piston Part Number | Piston Ring Part Number | Piston Pin Size (mm) |
|---|---|---|---|---|
| V1903 | 80 | 16427-21113 / 1642721113 | 16427-21050 / 1642721050 | 25 * 65 |
| V1702 | 82 | 15201-21110 / 1520121110 | 19227-21050 / 1922721050 | 23 * 64 |
| V2003 (Standard) | 83 | 1G363-21110 / 1G36321110 | 1A024-21050 / 1A02421050 | 25 * 65 |
| V2003-T (Turbo) | 83 | 1G770-21110 / 1G77021110 | 1A024-21050 / 1A02421050 | 25 * 65 |
| V1902 (Early) | 85 | 19274-21110 / 1927421110 | 19274-21050 / 1927421050 | 23 * 64 |
| V1902 (Late) | 85 | 17365-21120 / 1736521120 | 19274-21050 / 1927421050 | 25 * 64 |
When comparing replacement options for V1903 Piston Kit, performance reliability is the only metric that matters for construction and agricultural equipment. Below is a procurement comparison to help your decision-making.
| Key Features | Our OEM-Standard Replacement | Cheap Aftermarket Alternatives | Operational Benefit |
|---|---|---|---|
| Material Composition | High-Silicon Aluminum Alloy | Standard Cast Aluminum | Superior Heat Resistance |
| Structure | Tri-Metal Reinforced Lands | Non-Reinforced | Prevents Ring Groove Wear |
| Dimensional Accuracy | +/- 0.005mm Tolerance | +/- 0.02mm Tolerance | Optimized Oil Consumption |
| Surface Treatment | Anodized Crown / Skirt Coating | Untreated Surface | Reduced Friction & Scuffing |
| Pin Hardness | Case-Hardened Steel | Standard Carbon Steel | Prevents Ovaling & Noise |
| Kit Integrity | Matched Piston/Ring Weights | Random Assembly | Balanced Engine Operation |
Model NO.: V1903 / V1702 / V2003 / V1902
Product Name: Piston Kit / Liner Kit / Overhaul Rebuild Parts
Part Number: 16427-21113, 16427-21050, 15201-21110, 1G363-21110
Condition: Brand New, OEM Standard Replacement
Payment Terms: T/T, Western Union, MoneyGram
Delivery Methods: Express (DHL, Fedex, EMS, UPS), Air, or Sea Freight
MOQ: 1 Piece
Stock Status: In Stock / Fast Dispatch
Packaging: Industrial Export Packing
Application: Engine rebuild, professional overhaul, preventative maintenance
Q: Why is my V1903 engine consuming excessive oil even after a top-end refresh?
A: If the 16427-21050 ring set was installed without checking the cylinder liner taper or if the ring gap wasn't staggered correctly, oil will bypass the combustion chamber. We recommend a full bore inspection when replacing pistons.
Q: Can I use 16427-21113 in a V1902 engine?
A: No. As shown in our spec table, the V1903 uses an 80mm bore while the V1902 uses an 85mm bore. Installing the wrong piston will cause immediate compression loss or mechanical interference.
Q: Why Choose This Piston Kit?
A: Our kit features an OEM-standard tri-metal structure and is trusted by specialized repair shops and large equipment fleets worldwide for long-cycle reliability.
Not sure how this issue affects your equipment? Our team helps operators:
Identify potential risks during maintenance to prevent catastrophic failure.
Recommend suitable replacement parts based on your specific engine serial number.
Support both inspection advice and professional-grade parts supply.
We are a leading provider of premium engine components for global brands including Cummins, Komatsu, Caterpillar, Isuzu, Kubota, Yanmar, and Weichai. Our inventory focuses on high-precision cylinder liners, pistons, piston rings, crankshaft bearings, connecting rod bearings, thrust washers, and full overhaul gasket kits. We also supply critical hardware such as fuel injection pumps, diesel injectors, crankshafts, turbochargers, water pumps, oil pumps, cylinder blocks, cylinder heads, and connecting rods.
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