Finding the right internal engine components for your Cummins B3.3 is critical to avoiding premature failure after an overhaul. Whether you are searching by the Cummins part number 4089967 or the Komatsu cross-reference 6204-31-2170 (6204312170), sourcing a high-precision cylinder liner ensures your engine maintains optimal compression and thermal efficiency.
This cylinder liner is engineered for heavy-duty industrial applications, commonly found in excavators, skid steers, and power generators using the B3.3 platform. We provide brand new, OEM-standard replacements that meet or exceed original equipment durability.
| Attribute | Details / Specification |
|---|---|
| Model NO. | B3.3 / QSB3.3 Engine Series |
| Product Name | Cylinder Liner / Engine Sleeve |
| Part Number (Primary) | 4089967 / 6204-31-2170 (6204312170) |
| Alternative Part Numbers | 4025237, 4955416, 683800877, 40899 |
| Type | Dry Cylinder Liner |
| Condition | Brand New, OEM Standard Replacement |
| MOQ | 1 Piece (Full Engine Sets Recommended) |
| Stock Status | In Stock / Fast Dispatch Available |
| Application | Engine rebuild, overhaul, routine maintenance |
| Payment Terms | T/T, Western Union, MoneyGram |
| Delivery | DHL, Fedex, EMS, UPS, Air/Sea Freight |
Comparing aftermarket options can be challenging. Below is a procurement-focused comparison to help fleet managers and repair shops make an informed decision.
| Core Buying Points | Our OEM-Standard Liner | Standard Aftermarket |
|---|---|---|
| 1. Material Composition | High-phosphorus cast iron for wear resistance | Variable quality scrap iron |
| 2. Dimensional Precision | Micron-level tolerance for B3.3 block fit | Loose tolerances leading to "loose sleeves" |
| 3. Heat Dissipation | Advanced alloy structure for rapid cooling | Poor thermal conductivity |
| 4. Surface Finish | Cross-hatch honing for oil retention | Rough finish causing ring friction |
| 5. Part Compatibility | Covers 4089967 and 6204-31-2170 seamlessly | Incorrect flange thickness issues |
| 6. Service Life | Designed for 10,000+ hour operation | Unpredictable early failure risks |
Our technical team helps operators and mechanics troubleshoot during the teardown phase:
Identify potential risks like liner pitting or cavitation during maintenance.
Recommend suitable replacement parts like the 4955416 or 4025237 based on block wear.
Support both inspection advice and a stable parts supply chain for urgent repairs.
Common symptom: If your B3.3 engine is experiencing excessive blow-by or blue smoke, it is often a sign that the 6204-31-2170 liners have reached their service limit. Replacing them with high-quality sleeves prevents damage to the piston rings and crankshaft.
Q: Can I use 4089967 for Komatsu engines?
A: Yes, the B3.3 is a collaborative engine design. The Cummins 4089967 is functionally identical to Komatsu 6204-31-2170. We ensure cross-compatibility for industrial machines.
Q: What causes premature liner wear in B3.3 models?
A: Frequent causes include dirty air filtration and cooling system neglect. Using our OEM-standard liners with the correct overhaul gasket kit ensures a proper seal and long-term reliability.
Q: Why Choose This Cylinder Liner?
A: It features an OEM-standard tri-metal structure and is trusted by repair shops and equipment fleets worldwide for its perfect fit and durability.
Get a quote for the 4089967 Cylinder Liner today. Immediate stock for B3.3 rebuilds.
WhatsApp: +86 13532379052Email: [email protected]
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