Shown here is our new filter style breather. Designed like a 'mini air cleaner" these allow the engine to breathe freely as needed. Economically priced and great for racing or street use, these are 3" tall and fit a standard 1 1/4" valve cover hole. Similar to the "K&N style" breathers, these feature a molded in rubber grommet in the base, so no extra grommets or other pieces are needed, the breather itself fits right into the valve cover hole.