Replacement Parts Availability Act

This bill amends the Toxic Substances Control Act to require the EPA to exempt replacement parts for complex durable and consumer goods (like appliances or vehicles) designed before a specific regulatory rule is published. It limits EPA regulation of these parts only if the agency proves they significantly contribute to health risks, with strict evidence requirements. The bill also prevents bans on chemicals needed to make exempt parts and mandates a 10-year transition period for any existing restrictions. This directly affects manufacturers of replacement parts and the EPA's regulatory authority over them.