Keep your fuel filler neck and fuel tank contaminants-free smoothly with this precision CNC-machined billet aluminum fuel cap. Featuring a high-quality Viton O-ring seal, it provides a secure, airtight fit that protects your fuel system from contaminants like dust, dirt, and moisture. The fuel cap also includes a powerful neodymium magnet on the bottom, allowing for easy adhesion to body panels during refueling.