If your Komatsu 6D107 or SAA6D107E-1 engine is experiencing blow-by or power loss, finding the exact dimension-matched liner is critical. We provide the heavy-duty 6745-31-2100 (also known as 6745312100) cylinder liner, engineered for high-pressure combustion environments in PC200-8 and PC220-8 excavators.
| Field | Details | Field | Details |
|---|---|---|---|
| Model NO. | Komatsu 6D107 / SAA6D107E-1 | Part Number | 6745-31-2100 / 6745312100 |
| Product Name | Cylinder Liner / Cylinder Sleeve | Type | Wet Type Liner |
| Condition | Brand New, OEM Standard Replacement | MOQ | 1 Piece |
| Stock Status | In Stock / Fast Dispatch | Packaging | Industrial Export Packing |
| Payment Terms | T/T, Western Union, MoneyGram | Delivery | DHL, Fedex, UPS, Air/Sea Freight |
| Application | Engine rebuild, overhaul, maintenance for PC200-8, PC220-8, PC240-8, WA380-6 | ||
This 6745-31-2100 liner is compatible with the following equipment models powered by the 107 series engine:
| Equipment Category | Model Names | Engine Series |
|---|---|---|
| Crawler Excavator | PC200-8, PC200LC-8, PC210-8, PC220-8, PC240-8, PC270-8 | 6D107 / SAA6D107E-1 |
| Wheel Loader | WA380-6, WA380Z-6 | SAA6D107E-1 |
| Motor Grader | GD555-5, GD655-5, GD675-5 | SAA6D107E-1 |
| Bulldozer | D51EX-22, D51PX-22, D61EX-15, D61PX-15 | 6D107 Series |
Why professional workshops choose our 6745-31-2100 replacements over generic options:
| Feature | Our Premium OEM Standard | Generic Aftermarket |
|---|---|---|
| 1. Material Density | High-phosphorus cast iron for wear resistance | Standard grey iron (short lifespan) |
| 2. Precision Honing | Cross-hatch pattern for optimal oil retention | Rough finish leading to piston ring friction |
| 3. Heat Dissipation | Uniform wall thickness for 6D107 cooling efficiency | Uneven thickness causing hot spots |
| 4. Seal Compatibility | Perfect fit for 6745-31-2100 O-ring grooves | Loose fit leading to coolant leakage |
| 5. Fatigue Strength | Tested for 10,000+ operating hours | Prone to cracking under heavy load |
| 6. Installation | Drop-in replacement, no machining required | May require manual adjustments |
Our technical team helps operators and maintenance managers:
✔ Identify potential risks during 6D107 engine maintenance
✔ Recommend suitable replacement parts if needed
✔ Support both inspection advice and parts supply
Contact us today for a compatibility double-check based on your engine serial number.
A: This often points to a "dropped" liner or a failed liner seal. If the 6745-31-2100 liner surface shows cavitation or pitting, coolant can leak into the combustion chamber. Replacing the liner and seals is the standard solution to prevent hydraulic lock.
A: Scoring is usually caused by dust ingestion through the intake or overheating. If you can feel the marks with your fingernail, the liner must be replaced during your overhaul to restore compression.
Answer: Our 6745-31-2100 features an OEM-standard tri-metal structure. It is trusted by repair shops and equipment fleets globally for its ability to withstand the high torque demands of the Komatsu PC200-8 series.
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