a rod defining a rod centerline;

a flange having an upper face, a lower face, an interior and a slot, with the lower face being radially spaced from the upper face, with respect to the rod centerline, and being operably couplable to a respective portion of the exhaust manifold; and

a fin at least partially received within the slot and extending through at least a portion of the interior, the fin being operably coupled to the rod, with at least a portion of the fin extending radially beyond the upper face of the flange and toward the rod centerline with respect to the rod centerline;

wherein the flange extends a first axial distance along the rod centerline and the fin extending a second axial distance along the rod centerline.