A fuel injector including an injector body 2 adapted to accommodate a pole piece 3 of a solenoid actuator, where the top portion of said injector body includes a cylindrically formed generally open-ended recessed portion, said recessed portions accommodating a generally cylindrical pole piece 3 which includes a bore 9 located along the central axis to provide a fuel flow path, and the top portion of said pole piece 3 includes a cylindrically formed recess so as to form a sleeve or lip portion 7, 8. The arrangement allows for improved high pressure performance and pole piece retention.
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