How do I purchase CMC replacement parts? Follow You can purchase replacement parts through your local dealer or by contacting customer service. If your product is covered under warranty, a RMA form must be filled out. For CMC Marine, please use the following numbers: Sales Phone: 800-654-3697Fax: 580-252-2970 Technical Support Phone: 580-252-1699Fax: 580-252-2970 Related articles CMC Owner's Manual Can I send in my unit for repair? My CMC unit is stuck in the up position. CMC Warranty and Sales Policy My CMC unit will not run. What should I do? Comments 0 comments Please sign in to leave a comment.