Perkins 2645A738 Common Rail Injector Assembly

The Perkins 2645A738 is a high-pressure common rail diesel injector designed for Perkins 1104D and 1106D series engines, also utilized in Caterpillar C4.4 and C6.6 industrial power units. It features electromagnetic actuation for precise fuel metering and atomization, supporting injection pressures ranging from 1,800 to 2,500 bar. This injector assembly replaces Perkins part numbers 2645A738 and superseded 2645A746, and cross-references Caterpillar OEM numbers 320-0677, 10R-7671, and 306-9377. It is a critical component for maintaining emission compliance and engine performance in heavy-duty off-highway applications.