Part number: MER-2218300584 is a new, unused Genuine Mercedes a/c expansion valve. The A/C expansion valve regulates the flow of Freon plus it supports the process of Freon changing from liquid to a gas (by allowing the Freon to expand). As the Freon expands, it becomes cooler just as it enters your car's evaporator core and cools your car's interior (with the help of your interior fan). Most expansion vales fail due to clogging, causing it to stick in an open, closed or partially open position and must be replaced.
Genuine Mercedes parts were designed with the consumer in mind. These parts guarantee the safety and security you come to expect from such a prestigious brand. Your Mercedes deserves only Genuine Mercedes replacement parts.
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