Cummins 3179664 Piston Cooling Nozzle Valve Assembly

The Cummins 3179664 piston cooling nozzle valve is a critical engine component designed to direct pressurized oil onto the piston crown underside. This thermal management function reduces piston operating temperatures, mitigates thermal stress, and prevents premature wear or failure in high-output diesel applications. Engineered to meet exacting OEM specifications, this nozzle valve assembly ensures precise flow characteristics and spray pattern alignment for Cummins K-series and QSK-series heavy-duty engines. It is constructed from high-strength alloy materials capable of withstanding extreme cylinder pressures and thermal cycling inherent in power generation, marine propulsion, and heavy construction equipment duty cycles. This component serves as a direct replacement for Cummins OEM part numbers 3179664, 3178506, and 3630068. It is compatible with engine platforms including K38, KTA38, QSK38, K50, KTA50, and QSK50 configurations. Verification of specific engine serial number and configuration is recommended prior to installation to ensure correct fitment.