A gas vapor canister—also known as a charcoal or EVAP canister—is a compact yet powerful component designed to capture and contain fuel vapors before they escape into the air. Inside the canister, activated charcoal absorbs hydrocarbon vapors from the fuel tank, preventing unwanted gasoline odors, reducing emissions, and ensuring cleaner, safer air around your vehicle. https://vaportrapper.blogspot.com/2025/12/what-is-gas-vapor-canister-and-why-your.html