Finding the right engine components is critical for maintaining equipment uptime. If you are searching for a high-performance QSB6.7 Liner Kit, our professional-grade replacement parts including 4934860 piston and 4919951 cylinder liner are designed to meet rigorous industrial standards. These components are essential for restoring compression and oil control in your diesel engine.
| Item Details | Specifications for QSB6.7 Series |
|---|---|
| Model NO. | QSB6.7 / SAA6D107E |
| Product Name | Engine Liner Kits / Piston Overhaul Set |
| Piston Part Number | 4934860 / 6754-31-2111 (6754312111) |
| Cylinder Liner Part Number | 4919951 / 3803544 |
| Piston Ring Part Number | 4976252 |
| Type | Internal Combustion Engine Parts |
| Condition | Brand New, OEM Standard Replacement |
| MOQ | 1 Piece |
| Stock Status | In Stock / Fast Dispatch |
| Payment Terms | T/T, Western Union, MoneyGram |
| Delivery Methods | Express: DHL Fedex EMS UPS or by Air/ Sea |
| Packaging | Industrial Export Packing |
| Application | Engine rebuild, overhaul, maintenance |
When selecting parts for your engine maintenance, precision and material quality are the most important factors. Below is a comparison of our premium components versus standard aftermarket options.
| Procurement Core Points | Our Premium Replacement (4934860 / 4919951) | Common Aftermarket Parts |
|---|---|---|
| 1. Material Composition | High-strength alloy with OEM-standard tri-metal structure | Standard cast iron with lower heat resistance |
| 2. Precision Engineering | Micron-level accuracy for perfect QSB6.7 fitment | Variable tolerances leading to installation gaps |
| 3. Durability Range | Extended service life for heavy-duty overhaul | Shortened lifespan under high-pressure conditions |
| 4. Sealing Performance | Optimized for 4976252 rings to prevent blow-by | Prone to oil leakage and compression loss |
| 5. Heat Dissipation | Enhanced thermal conductivity to prevent seizing | Poor cooling leads to liner cracking or scoring |
| 6. Cost Efficiency | Reduced downtime and long-term maintenance costs | Frequent replacements increase total cost of ownership |
Not sure how this issue affects your equipment? Our technical team is here to help operators manage their fleet more effectively:
Identify potential risks during maintenance to avoid catastrophic engine failure.
Recommend suitable replacement parts if needed, ensuring part number compatibility like 6754-31-2111.
Support both inspection advice and parts supply for a seamless repair process.
Our goal is to ensure your QSB6.7 engine returns to peak performance with the most reliable parts available in the market.
Q: What causes excessive blue smoke and oil consumption in my QSB6.7?
A: This is often caused by worn 4976252 piston rings or scored 4919951 liners. If the liner surface is damaged, oil escapes into the combustion chamber. We recommend a full liner kit replacement to restore the seal.
Q: Why should I choose the 4934860 Piston Kit over others?
A: Our 4934860 kit features an OEM-standard tri-metal structure. It is trusted by repair shops and equipment fleets globally for its ability to withstand the high injection pressures of modern diesel systems.
Q: How do I verify if 6754-31-2111 is compatible with my Komatsu equipment?
A: The part number 6754-31-2111 (or 6754312111) is the direct cross-reference for the Cummins 4934860. It is widely used in SAA6D107E engines found in excavators and loaders. Always check your engine serial number before ordering.
Get a quick quote and check current stock availability for your engine overhaul project.
We specialize in providing high-quality engine solutions for global brands. Our core business includes supplying Cummins engine parts, Komatsu replacement components, Caterpillar diesel parts, Isuzu engine spares, Kubota maintenance kits, Yanmar industrial parts, and Weichai engine assemblies. Whether you need a complete engine assembly or specific internal components, we provide the following long-tail solutions:
Cylinder liner kits, Precision-engineered pistons, High-tension piston rings, Durable crankshaft bearings, Connecting rod bushes, Thrust washer sets, Full engine overhaul gasket kits, Diesel fuel injection pumps, High-pressure fuel injectors, Forged steel crankshafts, Turbocharger replacements, Engine water pumps, Lubricating oil pumps, Cylinder block casting, Finished cylinder heads, Connecting rod assemblies, Engine valvetrain components, Camshaft replacements, Oil cooler assemblies, and Flywheel ring gears.
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