Polaris Predator 500 2x4 and 4x4 ATV Quad Billet Gas Cap (2003-2007) Silver (Available in Many Colors) Fitment for Polaris Predator 500 2x4 and 4x4 (2003-2007). Includes breather and check valve Includes rubber gasket to provide seal Includes rubber gasket to provide seal CNC machined from billet aluminum Anodized and polished for long-lasting color