Denso 105015-5140 Fuel Injector Nozzle Assembly

The Denso 105015-5140 is a precision-engineered pencil-type fuel injector nozzle designed for high-pressure common rail and mechanical injection systems. It features a 155-degree spray angle optimized for direct injection combustion chambers in heavy-duty diesel engines. The nozzle body is manufactured from high-speed tool steel with hardened needle valve seat surfaces to withstand extreme injection pressures and abrasive fuel contaminants. This component serves as a critical wear item within the fuel injector assembly, requiring precise flow calibration and spray pattern integrity. It cross-references to Bosch DLL155SN514 (9432611733), Zexel H105015514, and Komatsu OEM 6162133120. Applications include Komatsu hydraulic excavators and Isuzu heavy-duty truck platforms utilizing SAA6D107, SAA6D114, and 6HK1 engine series.