When it comes to maintaining the peak performance of your compact industrial equipment, the 16851-21112 Piston is a critical component for the Kubota D722 diesel engine. Whether you are managing a fleet of mini excavators or maintaining a standby generator, ensuring your combustion chamber maintains perfect compression is essential. This specific part number, also recognized as 1685121112, is engineered to meet the exact tolerances required for high-speed three-cylinder engines.
| Detail Field | Specifications |
|---|---|
| Model NO. | D722 Engine Series |
| Product Name | Engine Piston / Piston Assembly |
| Part Number | 16851-21112 (1685121112) |
| Payment Terms | T/T, Western Union, MoneyGram |
| Delivery Methods | Express: DHL, Fedex, EMS, UPS / Air & Sea Freight |
| Type | Internal Combustion Engine Parts |
| Condition | Brand New, OEM Standard Replacement |
| MOQ | 1 Piece |
| Stock Status | In Stock / Fast Dispatch |
| Application | Engine rebuild, overhaul, routine maintenance |
Not all engine parts are created equal. Below is a comparison to help procurement officers and mechanics understand why our 16851-21112 replacement stands out from low-tier aftermarket options.
| Core Purchasing Points | Standard Aftermarket | Our OEM Standard Replacement |
|---|---|---|
| 1. Material Composition | Recycled aluminum alloys | High-strength Heat-resistant Alloy |
| 2. Dimensional Precision | General tolerance (+/- 0.05mm) | Precision CNC Machined (+/- 0.01mm) |
| 3. Thermal Expansion | High risk of cylinder scuffing | Optimized expansion coefficient |
| 4. Surface Treatment | Untreated or basic polish | Anodized top or Skirt coating options |
| 5. Ring Groove Durability | Prone to premature wear | Reinforced grooves for long life |
| 6. Fitment Guarantee | Hit or miss | 100% Match for D722 Block |
The Kubota D722 engine is widely utilized across various industrial sectors. This piston is compatible with the following equipment models:
| Equipment Category | Specific Machine Models |
|---|---|
| Mini Excavators | K008, K008-3, U10-3 |
| Tractors & Mowers | G1800, G1900, G2160, GF1800, BX1800, BX1830, BX1850 |
| Generators & Welders | GL6000, GL7000, J106, J108, KJ-S130, KJ-T130 |
| Industrial Utility | Utility Vehicles (RTV900), Skid Steers, Pumping Units |
Need a quote for a bulk order or a full engine rebuild kit? Connect with us directly:
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White smoke often indicates unburnt diesel or coolant entering the chamber. However, if accompanied by low power, it could be a sign of low compression due to a worn 16851-21112 piston or broken rings. We recommend a compression test before full disassembly.
Piston slap or connecting rod bearing wear are common causes of rhythmic knocking. Using a high-quality 16851-21112 replacement during your overhaul ensures the piston-to-wall clearance is within factory specs, eliminating mechanical noise.
Answer: Our pistons feature an OEM-standard tri-metal structure or high-silicon aluminum alloy, providing superior heat dissipation. They are trusted by professional repair shops and heavy equipment fleets globally for their reliability under continuous load.
Not sure how this issue affects your equipment? Our team helps operators:
✔ Identify potential risks during maintenance
✔ Recommend suitable replacement parts if needed
✔ Support both inspection advice and parts supply
Getting the right engine rebuild kit starts with verifying your serial number and part codes like 16851-21112.
We specialize in providing comprehensive engine solutions for global brands. Our inventory includes engine assemblies and a full range of internal components. Whether you are looking for Caterpillar cylinder liners, Cummins overhaul gaskets, or Komatsu crankshafts, we provide parts that keep your machinery moving.
Our core business covers engines from Isuzu, Yanmar, Weichai, Kubota, and more. We supply high-demand items such as:
Cylinder Liners, Pistons, Piston Rings, Main Bearings, Con Rod Bearings, Thrust Washers, Overhaul Gasket Kits, Diesel Injection Pumps, Fuel Injectors, Crankshafts, Turbochargers, Water Pumps, Oil Pumps, Cylinder Blocks, Cylinder Heads, and Connecting Rods.
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