Finding a reliable source for 3066 engine pistons is critical for preventing downtime in heavy equipment operations. Whether you are performing a routine overhaul or a complete engine rebuild, using the correct part numbers like 297-7795, 297-7750, 297-7751, and 297-7752 ensures your machine maintains peak compression and fuel efficiency.
Below is the detailed specification for the piston units designed for high-performance diesel engines. We provide both 297-7795 and 2977795 (non-hyphenated) variants to match your procurement system's requirements.
| Attribute | Specification Data |
|---|---|
| Model NO. | 3066 Diesel Engine |
| Product Name | Piston / Piston Body |
| Part Number | 297-7795, 297-7750, 297-7751, 297-7752 (2977795, 2977750) |
| Type | Single Cylinder Piston Kit |
| Condition | Brand New, OEM Standard Replacement |
| Application | Engine rebuild, overhaul, maintenance |
| Stock Status | In Stock / Fast Dispatch |
| Payment Terms | T/T, Western Union, MoneyGram |
| Delivery Methods | DHL, Fedex, EMS, UPS, Air/Sea Freight |
| MOQ | 1 Piece |
| Packaging | Industrial Export Packing |
Choosing the right supplier for your 3066 series components involves more than just price. See how our components compare to standard market alternatives.
| Key Buying Points | Our Replacement Parts (OEM Standard) | Standard Aftermarket Parts |
|---|---|---|
| Material Composition | High-strength aluminum alloy with thermal coating | Basic cast aluminum |
| Dimensional Accuracy | Tolerance within 0.005mm for perfect fit | Variable tolerances causing friction |
| Heat Resistance | Tested for extreme combustion temperatures | Prone to expansion and cracking |
| Service Life | Designed for long-term heavy-duty cycles | Short-term fix, early wear potential |
| Compatibility | 100% Match for 297-7795 / 297-7750 specs | Occasional clearance issues |
| Value for Money | Lowers long-term maintenance costs | Frequent replacements needed |
These pistons are specifically engineered for the following 3066 engine-powered equipment. Please verify your engine serial number before ordering.
| Engine Series | Common Machine Models | Compatible Part Numbers |
|---|---|---|
| 3066 Engine | 320C Excavator, 320C L, 320C LN | 297-7795 / 297-7750 |
| 3066 Engine | 320D Excavator (Early Series) | 297-7751 / 297-7752 |
| 3066 T / NA | Industrial Power Units, Generators | 297-7795 Group |
If your 3066 engine is experiencing significant power loss or heavy black smoke, it often points to worn piston rings or damaged piston crowns (297-7795). Overheating usually causes the piston to expand beyond limits, leading to cylinder scoring. Solution: Perform a compression test. If results are below manufacturer specs, a top-end overhaul using OEM standard 297-7750 pistons is required.
Metallic knocking sounds during acceleration can indicate excessive clearance between the piston and the cylinder wall. Using low-quality pistons often results in "piston slap." Solution: Replace with precision-machined pistons that meet the exact weight and balance of the original 3066 components to restore smooth operation.
Answer: Our pistons feature an OEM-standard tri-metal structure, offering superior durability. They are trusted by repair shops and equipment fleets worldwide for reliable performance in demanding environments.
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
We bridge the gap between technical diagnosis and immediate parts availability.
For bulk pricing or immediate stock verification for 297-7795 and 297-7750:
Chat on WhatsApp: +8613532379052Email for Quotation: [email protected]
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We specialize in high-quality engine assemblies and components for world-leading brands including Caterpillar, Komatsu, Cummins, Isuzu, Kubota, Yanmar, and Weichai. Our core inventory covers everything from full engine rebuild kits to critical individual components.
Core Products: Cylinder Liners, Pistons, Piston Rings, Main Bearings, Con Rod Bearings, Thrust Washers, Full Overhaul Gasket Kits, Diesel Fuel Injection Pumps, Fuel Injectors, Cranksahfts, Turbochargers, Water Pumps, Oil Pumps, Cylinder Blocks, Cylinder Heads, and Connecting Rods.
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