Patent ID: 7063078

Claim:
A rocker box assembly adapted to be coupled to a cylinder head of a motorcycle engine, the rocker box assembly comprising: a base portion coupled to the cylinder head, the base portion defining an upper surface and a breather passage that extends through the upper surface and communicates with the cylinder head; a cover portion at least partially overlying the base portion and cooperating therewith to at least partially define a rocker chamber, the cover portion including a lower surface facing the upper surface of the base portion, the lower surface and the upper surface defining an interface; a breather assembly positioned within the rocker chamber, the breather assembly defining an inlet communicating with the rocker chamber and an outlet communicating with the breather passage; and a sealing member including a first portion engaging the upper surface and the lower surface to substantially seal the interface, and a second portion integral with the first portion and engaging the outlet and the breather passage to substantially seal the breather passage from the rocker chamber, wherein the second portion of the sealing member includes a flange portion that receives the outlet and that extends into the breather passage.