People know that billet aluminum is a lot tougher than plastic. That toughness means fewer problems over time. Replace your fragile plastic, factory air bleeder screw with the longer-lasting billet aluminum PPE Air Bleeder Screw.
The damage and distortion that typically happens with a stock plastic screw from under hood temperatures and routine servicing will no longer be a problem because PPE's Air Bleeder Screw features billet aluminum construction and a Nitrile O-ring seal.