Genuine OEM Jaguar Brake System Plug, part number C2P9535. This small but critical component is designed to seal openings or connections within the vehicle's brake fluid system, often found on hoses or reservoirs. Its primary function is to prevent fluid leaks and contamination, ensuring the hydraulic system operates correctly and safely. Using a genuine OEM plug guarantees the correct material composition and sealing properties, crucial for the high-pressure and corrosive environment of brake fluid, preventing premature failure and maintaining braking performance.