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Cummins QSK23 Piston Liner Kit Six-Piece Set
Complete 6-cylinder piston & liner kit for Cummins QSK23 diesel engines. Includes liners, pistons, pins, rings, retainers, and seals. Also fits Komatsu 6D170. Direct replacement for in-frame overhaul and maximum performance.
Product Details
Cummins QSK23 Six-Piece Piston & Liner Kit (6-Cylinder Set)
Full in-frame overhaul kit containing all six matching components for the powerful 23-liter Cummins QSK23 engine – also compatible with Komatsu 6D170.
In heavy-duty applications such as mining, power generation, construction, and marine equipment, the Cummins QSK23 engine requires a complete set of matched internal components to restore compression, reduce oil consumption, and deliver maximum performance after thousands of operating hours. This QSK23 Six-Piece Piston & Liner Kit provides everything needed for a professional in-frame overhaul on all six cylinders.
Each kit includes precision-matched cylinder liners, pistons, piston pins, piston rings, retainers, and liner seals engineered to Cummins specifications. The components work together to ensure a perfect fit, optimal heat transfer, and long-term durability under extreme loads and thermal cycles. Installation is straightforward as a direct replacement set, helping extend engine life and minimize downtime in 24/7 operations.
Product Features
- Complete 6-cylinder matched set for full in-frame overhaul
- Precision-honed liners with matched pistons for excellent sealing
- High-strength piston pins and retainers for reliable operation
- Multi-piece piston ring set for superior oil control and compression
- All required liner sealing rings included
- Direct-fit design – no machining required for standard applications
- Also compatible with Komatsu 6D170 engines
Kit Contents (for 6 Cylinders)
| Component | Part Number | Quantity |
|---|---|---|
| Cylinder Liner | 4344299 | 6 |
| Liner Sealing Ring | 4006178 | 6 |
| Liner Sealing Ring | 4006179 | 6 |
| Liner Sealing Ring | 4006297 | 6 |
| Piston | 4096672 | 6 |
| Retaining Ring (Snap Ring) | 4006175 | 12 |
| Piston Pin | 4006176 | 6 |
| Compression Ring | 4096676 | 6 |
| Compression Ring | 4006173 | 6 |
| Oil Control Ring | 4006174 | 6 |
Note: Piston part numbers may vary slightly by engine configuration. Professional installation recommended.
Compatible Applications
Ideal for Cummins QSK23 series engines (and Komatsu 6D170 equivalents) in:
- Mining and construction machinery
- Industrial generators and power plants
- Heavy-duty trucks and excavators
- Marine propulsion and stationary equipment
FAQ
- What is included in the QSK23 six-piece kit? 6 cylinder liners, 6 pistons, 6 piston pins, 12 retaining rings, full piston ring sets, and all liner sealing rings.
- Does it fit Komatsu 6D170? Yes – this kit is directly compatible with Komatsu 6D170 engines.
- Is this an in-frame overhaul kit? Yes – designed for in-frame repair without removing the engine block.
- Are the parts matched for a perfect fit? All components are precision-matched for Cummins QSK23 specifications.
Ready to complete your QSK23 overhaul?
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