People know that billet aluminum is a lot tougher than plastic. That toughness means fewer problems over time. So replace your fragile plastic, factory air bleeder screw with the longer-lasting billet aluminum PPE Air Bleeder Screw.

The damage and distortion happens naturally with a plastic screw from routine servicing will no longer be a problem because >PPEs Air Bleeder Screw features billet aluminum construction and a Nitrile O-ring seal.
Features:

• Air Bleeder Screw - Yellow (513081000)
• Machined air channel on threads to bleed air (Beware of imitation bleeder screws without an air channel)
• Billet Aluminum
• Bio diesel compatible Nitrile O-ring
• Sold Individually

Applications:

• 2001-2016 GM 6.6L Duramax Engine