Fuel Injector Dust Seal

This disclosure is directed to a fuel injector dust seal comprising: a sleeve arranged between a fuel injector and a fuel injector receiving aperture of a cylinder head, the sleeve defining a longitudinal axis with a first axial end and a second axial end; the sleeve further comprising: a first section, the first segment defining a first inner perimeter configured to be in contact with a first outer perimeter of a fuel injector and a first outer perimeter that is smaller than an inner perimeter of a first section of a fuel injector receiving aperture; and a second section, the second section defining a second inner perimeter that is bigger than an outer perimeter of a second outer perimeter of a fuel injector and a second outer perimeter configured to be in contact with an inner perimeter of a second segment of a fuel injector receiving aperture.