Patent ID: 8424509

Claim:
A fuel injector cup assembly for mounting to a cylinder head of an engine, the fuel cup assembly comprising: a fuel injector cup having a longitudinal axis; an opening constructed and arranged to receive fuel from the fuel rail when associated with the fuel rail; an open end constructed and arranged to receive an inlet of a fuel injector therein such that an O-ring of the fuel injector inlet may seal with the injector cup; and a mounting portion extending from a body of the fuel injector cup in a cantilever manner, the mounting portion being constructed and arranged to be used to mount the fuel injector cup with respect to a cylinder head, and rotation limiting structure associated with at least the mounting portion, the rotation limiting structure being constructed and arranged such that when the fuel injector cup is coupled to the cylinder head via the mounting portion and when a first moment is created about the mounting portion causing rotation of the fuel injector cup with respect to the fixed fuel injector, a portion of the rotation limiting structure will engage at least the mounting portion of the fuel injector cup and create a second moment equal and opposite to the first moment, to prevent further rotation of the injector cup.