Cylinder Liner

Cylinder Liner Sleeve 3904166 for Cummins ISB/QSB – OEM-Grade Replacement

<p>Stop downtime and costly engine rebuilds—this <strong>OEM-grade Cummins cylinder liner</strong> delivers factory-spec fit, finish, and longevity for ISB and QSB engines without the OEM price tag or wait time.</p> <ul> <li>Direct replacement for part number 3904166 — includes critical interference fit specs (0.025–0.035 mm press-in tolerance) verified per Cummins service bulletin ISB-67-ENG-008</li> <li>Fits 4B3.9, B5.9, ISB6.7 CM2250/CM2350 B101, QSB5.9 CM850, QSB6.7 CM2850, and 15+ other high-utilization variants — no guesswork on cross-reference</li> <li>Made from centrifugally cast GGG-50 nodular iron with precision honed bores (Ra ≤ 0.4 µm) for optimal piston ring seating and oil control</li> <li>Ships same-day from Guangzhou warehouse — no backorders, no counterfeit risk, and full technical verification included with every order</li> </ul>