Replace Ford Evap System Components. Purchase Ford Evap Components List & Ford Evap Canister Replacement Cost. Order Ford Evap Components. Maintaining the Evap (Evaporative Emission Control System) components of your Ford is vital for optimal performance and emission reduction. Regular checks for cracks or loose connections can prevent the need for early replacements. Signs that your Evap components might need replacement include a persistent check engine light or fuel odors, indicating possible leaks or malfunctions. To extend the lifespan of these parts, ensure that your car?s fuel cap is always secure and replace it if it's damaged. When selecting new Evap components, choose high-quality options tailored for your Ford model to guarantee compatibility and longevity. Installation demands precision, so either follow detailed guides or seek professional assistance to ensure your vehicle's emissions system functions flawlessly.