525 Valve Cover Breathers ( SOLD AS A SET )(NOTE: This is one front and one back) The less air flow turbulence

The less air flow turbulence you can create

Air Cleaner Lid

Our 604 carb spacer is specifically designed to work with the 604 intake

unlike most spacers in the racing industry we are used to

David Smith

525 Valve Cover Breathers ( SOLD AS A SET )(NOTE: This is one front and one back) The less air flow turbulenceThe common misconception about valve cover breathers, is the filter media used in your most common breathers is for filtering air into the engine. This is false. The motor experiences constant blow by, therefore, constant pressure is being emitted from the crank case. As your "filter" clogs up with oil & dirt during racing conditions, the rate at which the engine can relieve the constant pressure slows down. Increased crank case pressure puts pressure