Check the listing for details. Mercedes C43 C63 Active Exhaust Valve Simulator W/Valve Protector. Condition: New. Listed at 58.00 USD. Exhaust valve simulators for deleting your exhaust valve actuator or you can also disconnect the valve actuator in the open position on your stock exhaust to operate in the full open position all the time. Simulator simply plugs into the wiring harness that goes to the muffler exhaust valves and eliminates the soft error code and cel that appears when the valve is removed/disabled. These are made in the USA and each one is bench tested to ensure correct valve cloning before shipping. Electrical components are embedded in 3M potting epoxy making them completely sealed from moisture , dirt, and debris. Comes with protective plugs for the valves on stock exhaust to prevent moisture , corrosion, and dirt from getting in any connections and can be reused in the future. This fits Mercedes AMG C43 C63 2017-2023 3 pin exhaust valve