Reliable engine performance starts with precision-engineered components. Our 6150-21-2221 (also identified as 6150212221) cylinder liner is a direct OEM-standard replacement for the Komatsu 6D125 series engine. Designed for high-stress industrial applications, this liner ensures optimal compression and thermal management for your heavy equipment overhaul.
| Model NO. | 6D125 / S6D125 / SA6D125 | Part Number | 6150-21-2221 / 6150212221 |
|---|---|---|---|
| Product Name | Engine Cylinder Liner | Type | Wet Type Sleeve |
| Condition | Brand New, OEM Standard | MOQ | 1 Piece |
| Stock Status | Ready to Ship | Packaging | Industrial Export Packing |
| Application | Engine Rebuild & Maintenance | Payment | T/T, Western Union, MoneyGram |
| Delivery | Express (DHL, Fedex, UPS, EMS), Air, or Sea Freight | ||
| Feature | Our OEM-Standard Liner | Standard Aftermarket |
|---|---|---|
| 1. Material | High-phosphorus cast iron | Basic grey iron |
| 2. Durability | Wear-resistant surface treatment | Prone to early scoring |
| 3. Precision | Zero-tolerance CNC machining | Potential fitment gaps |
| 4. Finish | Advanced plateau honing | Rough internal finish |
| 5. Heat Control | Consistent wall thickness | Uneven thermal expansion |
| 6. Value | Factory-direct pricing | High markup via middlemen |
| Equipment Type | Engine Model: 6D125 / S6D125 |
|---|---|
| Crawler Excavators | PC400-1, PC400-3, PC400-5, PC400-6, PC450-6 |
| Wheel Loaders | WA450-1, WA470-1, WA470-3 |
| Bulldozers | D85E-21, D85ESS-2, D85PX-15 |
| Dump Trucks | HD255-5 |
Our team helps operators solve engine challenges every day:
Identify potential risks during maintenance
Recommend suitable replacement parts if needed
Support both inspection advice and parts supply
Contact our 6D125 engine specialist for an immediate technical consultation.
Get a fast quote and worldwide shipping details today:
WhatsApp: +86 13532379052Email: [email protected]
Follow Us on FacebookQ: What causes scoring on the 6150-21-2221 cylinder liner?
A: Scoring is typically caused by localized overheating, contaminated oil, or air intake leaks. Using high-quality 6D125 liners with correct honing ensures the oil film remains intact under heavy loads.
Q: When is a 6D125 liner replacement necessary?
A: Replacement is required if you observe excessive blow-by, oil consumption, or when internal measurements exceed the ovality limits defined in the Komatsu service manual.
Q: Why Choose This Engine Cylinder Liner?
A: Our liners feature an OEM-standard tri-metal structure and are trusted by repair shops & equipment fleets globally for long-term reliability.
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